Abstract: The present invention provides an amorphous alloy containing at least one element of Fe, Co, and Ni as a main component, at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V, and B, wherein the temperature width &Dgr;Tx of a supercooled liquid region expressed by the equation &Dgr;Tx=Tx−Tg (wherein Tx indicates the crystallization temperature, and Tg indicates the glass transition temperature) is 20° C. or more. The amorphous alloy has excellent soft magnetic properties and high hardness, and can suitably be used for a transformer, a magnetic head, a tool, etc.

Abstract: An amorphous alloy having a boron content of about 6 to 10 at %, cast into a plate, wherein the plate thickness is about 15 to 25 &mgr;m, and the surface roughness Ra0.8 of the plate is about 0.8 &mgr;m or less.

Abstract: The present invention provides liquid phase diffusion bonding alloy foils capable of bonding in an oxidizing atmosphere, which can ensure joints with a homogeneous structure and adequate tensile strength in air in a short period of time using various alloys or Fe-based materials as materials to be bonded; specifically, they are Ni-based liquid phase diffusion bonding alloy foils with compositions comprising as essential components in terms of atomic percent, the diffusion elements B or P at 1.0-20.0% or B and P each at 1.0-20.0%, and Si at 0.5 to ≦15% or 0.5 to <10% and V at 0.1-20.0%, with the remainder substantially Ni and unavoidable impurities, and having a thickness of 3-100 &mgr;m. If necessary, one or more types of Cr, Mn or Mo, Co, and/or one or more types of W, Nb and Ti may be selectively included as appropriate. Compositions with a substantially amorphous crystal structure are most effective.

Abstract: Compositions and methods for obtaining nanocrystal dispersed amorphous alloys are described. A composition includes an amorphous matrix forming element (e.g., Al or Fe); at least one transition metal element; and at least one crystallizing agent that is insoluble in the resulting amorphous matrix. During devitrification, the crystallizing agent causes the formation of a high density nanocrystal dispersion. The compositions and methods provide advantages in that materials with superior properties are provided.

Abstract: The present invention provides a method for producing a Fe-based amorphous alloy ribbon comprising the steps of: ejecting a molten Fe-based alloy containing 10 atomic % or less of B onto a cooling roll to solidify the molten Fe-based alloy; and peeling the solidified Fe-based alloy from the cooling roll when the solidified Fe-based alloy has a temperature of 100 to 300° C. A Fe-based amorphous alloy ribbon having no crystalline phase is stably, continuously produced without breakage by this method.

Abstract: A metal material is placed on a lower mold of a press metal mold which has an upper mold and the lower mold not having engagement portions. The metal material is fused by a high energy heat source, and obtained molten metal over a melting point is pressed with the press metal mold and transformed into a predetermined configuration. The molten metal is cooled at a rate over a critical cooling rate simultaneously with or after the transformation, and the molded product of amorphous metal in predetermined configuration is obtained.

Abstract: A thermally sprayed coating formed with a quasicrystal-containing alloy, the alloy consisting essentially of, by weight percent, 10 to 45 Cu, about 7 to 22 Fe, 0 to 30 Cr, 0 to 30 Co, 0 to 20 Ni, 0 to 10 Mo, 0 to 7.5 W and balance aluminum with incidental impurities. The alloy contains less than 30 weight percent &psgr; phase and at least 65 weight percent &dgr; phase. The coating has a macrohardness of less than HR15Y 90.

Abstract: A thermally sprayed coating formed with a quasicrystal-containing alloy, the alloy consisting essentially of, by weight percent, 10 to 45 Cu, 7 to 22 Fe, 0 to 30 Cr, 0 to 30 Co, 0 to 20 Ni, 0 to 10 Mo, 0 to 7.5 W and balance aluminum with incidental impurities. The alloy contains at least 50 weight percent &psgr; phase. The coating has a macro hardness of at least HR15N 75.

Abstract: The present invention relates to a sinter and a casting comprising a high-hardness glassy alloy containing at least Fe and at least a metalloid element and having a temperature interval &Dgr;Tx of a supercooled liquid as expressed by &Dgr;Tx=Tx−Tg (where, Tx is a crystallization temperature and Tg is a glass transition temperature) of at least 20° C., which permit easy achievement of a complicated concave/convex shape.

Abstract: A nickel-chromium-based brazing alloy has a composition consisting essentially of about 9.5 to about 16.5 atom percent chromium, 0 to about 5 atom percent iron, about 10 to about 15 atom percent silicon, about 6 to less than 7 atom percent boron, and 0 to about 5 atom percent molybdenum, the balance being essentially nickel and incidental impurities. The alloy is especially suited for use as a brazing filler metal for joining stainless steel and/or superalloy at temperatures above 1100 degree(s) C. Such a filler metal has a thickness ranging from about 65 to 100 micrometers and a width ranging from 100 to 250 millimeters and more. Honeycomb structures and thin corrugated fin/plate structures particularly suited for use in manufacture of plate-type heat exchangers formed at least in part from stainless steels and/or superalloys are brazed using a unique process. The process is characterized by a long holding time at brazing temperature, and combines brazing and diffusion annealing in one technological step.

Abstract: Amorphous ferrophosphorus alloys (Formula II) are useful as shrinkage control agents in cement composites, and new amorphous ferrophosphorus alloys particularly useful for this purpose are disclosed having the formula: FeaCrbMcPdCeSif  (Formula I) wherein M is a metal selected from the group consisting of Vg, Nih, Mni and mixtures thereof, and a is about 66-76, b is about 1-10, c is about 2-7, d about 12-20, e about 1-6, f is less than about 2, g is about 1-5, h is less than about 2 and i is less than about 2, atomic percent.

Abstract: A magneto-impedance element, showing a change in impedance in response to an external magnetic field when an alternating current is applied, is composed of a glassy alloy. The glassy alloy is composed of at least one base metal selected from the group consisting of Fe, Co and Ni; at least one additional metal selected from the group consisting of Zr, Nb, Ta, Hf, Mo, Ti and V; and B. The glassy alloy has a temperature region &Dgr;Tx, of the supercooling liquid zone of 20° C. or more which is represented by the equation &Dgr;Tx=Tx−Tg wherein Tx is the crystallization temperature and Tg is the glass transition temperature. A magnetic head, a thin film magnetic head, an azimuth sensor and an autocanceler are provided with the MI element.

Abstract: This invention relates to brazing metals composed of cobalt-chromium-palladium-based alloys containing transition metals such as cobalt, nickel, tungsten, molybdenum and certain metalloids; and more particularly to multicomponent alloys containing cobalt, chromium, palladium, nickel, tungsten, molybdenum, boron, and silicon, which are especially useful for brazing metals at high temperatures to produce high strength, high oxidation and high temperature and corrosion-resistant brazements. Alloys of the present invention have a composition represented by the formula:Cr.sub.a Ni.sub.b W.sub.c Pd.sub.d Si.sub.e B.sub.f CO.sub.bal.

Abstract: An aluminum alloy is industrially producible and has higher strength and toughness than the prior art alloys. The high-strength high-toughness aluminum alloy includes a first phase of .alpha.-aluminum consisting of crystal grains whose mean crystal grain size is within the range of 60 to 1000 nm and a second phase of at least two different of intermetallic compounds consisting of crystal grains whose mean crystal grain sizes are within the range of 20 to 2000 nm. The crystal grains of the intermetallic compounds are dispersed so that they are only intermittently, and not continuously, linked throughout the alloy material.

Abstract: There is disclosed an amorphous soft magnetic material represented by a composition formula:Co.sub.x Zr.sub.y Pd.sub.z M.sub.a wherein M denotes at least one element selected from a group consisting of niobium, chromium, vanadium, tantalum, tungsten, molybdenum; and0.82.ltoreq.x.ltoreq.0.940.04.ltoreq.y.ltoreq.0.100.01.ltoreq.z.ltoreq.0.080.01.ltoreq.a.ltoreq.0.10.The amorphous soft magnetic material, which has a high saturated magnetic flux density, a low coercive force, a high magnetic permeability and excellent wear and corrosion resistances, can be obtained by adding at least one or more of the elements of the Va and VIa groups to a Co--Zr--Pd amorphous soft magnetic material.

Abstract: A planar inductance element is provided which has good high-frequency magnetic properties and which can be manufactured at high yield. The element has at least one ferromagnetic film which, whose high-frequency properties change only a little when thermal, magnetic and mechanical stresses are applied to them during the manufacture of the element. The film has high process immunity. The film has been formed by applying a stress in a plane of a ferromagnetic film having uniaxial magnetic anisotropy or forming an antiferromagnetic film on such a ferromagnetic film, and by heat-treating the resultant structure in a magnetic field, thereby inducing inplane unidirectional magnetic anisotropy in a prescribed direction. The ferromagnetic film thus formed has its high-frequency permeability improved and its high-frequency loss reduced. In forming the ferromagnetic film, the inplane unidirectional magnetic anisotropy may be induced at an angle of about 30.degree. or about 60.degree.

Abstract: A mechanically alloyed hydrogen storage material having 75-95 atomic percent Mg, 5-15 atomic percent Ni, 0.5-6 atomic percent Mo, and at least one additional element selected from the group consisting of Al, C, Ca, Ce, Co, Cr, Cu, Dy, Fe, La, Mn, Nd, Si, Ti, V, and Zr, preferably between 1-15 atomic %. The mechanically alloyed hydrogen storage preferably contains from 3-15 atomic % C and at least one other element selected from the group consisting of Al, Ca, Ce, Cu, Dy, Fe, La, Mn, and Nd. The hydrogen storage materials are created by mechanical alloying in a milling apparatus under an inert atmosphere, such as argon, or a mixed atmosphere, such as argon and hydrogen. The speed and length of the milling are varied.

Abstract: Thin film of quasicrystalline alloy having a thickness of between approximately 0.01 and 10 .mu.m comprising one or more quasicrystalline phases having a volume which represents at least 60% by volume of the quasicrystalline alloy, a quasicrystalline phase being either a quasicrystalline phase which exhibits rotational symmetries normally incompatible with a translational symmetry, i.e., symmetries with a 5-, 8-, 10- and 12-fold rotation axis, or an approximant phase or an approximant compound which is a true crystal, the approximant phase or compound having a crystallographic structure which remains compatible with the translational symmetry, but which has, in an electron diffraction photograph, diffraction patterns whose symmetry is close to that of 5-, 8-, 10- or 12-fold rotation axes; wherein the alloy has the following nominal composition, which is given in atomic percentages: Al.sub.a Re.sub.r Si.sub.s X.sub.d Mn.sub.m in which X represents at least one element chosen from B, C, P, S and Ge; 15.ltoreq.

Abstract: The present invention relates to a sinter and a casting comprising a high-hardness glassy alloy containing at least Fe and at least a metalloid element and having a temperature interval .DELTA.Tx of a supercooled liquid as expressed by .DELTA.Tx=Tx-Tg (where, Tx is a crystallization temperature and Tg is a glass transition temperature) of at least 20.degree. C., which permit easy achievement of a complicated concave/convex shape.

Abstract: A highly wear-resistant aluminum-based composite alloy has improved wear resistant itself and the wear amount of the opposed Fe-based material is decreased as compared with the conventional wear-resistant aluminum alloys. The inventive composite alloy has a structure that at least either a dispersing phase selected from the group consisting of hard fine particles or a solid-lubricant particles having average diameter of 10 um or less is dispersed in an aluminum-alloy matrix which contains quasi-crystals.

Abstract: The present invention relates to a rapidly quenched metal strip used as a core material for transformers, magnetic shields, choke coils, etc., and to an Fe-based rapidly quenched metal strip having a strip thickness exceeding 20 .mu.m and up to 70 .mu.m, wherein nonmetallic inclusions contained in said metal strip have a maximum particle size up to 50% of the strip thickness, and densities of the nonmetallic inclusions are up to 10 nonmetallic inclusions/mm.sup.3 for nonmetallic inclusions having a particle size exceeding 10 .mu.m and up to 50% of the strip thickness, up to 3.times.10.sup.3 nonmetallic inclusions/mm.sup.3 for nonmetallic inclusions having a particle size of at least 3 .mu.m to up to 10 .mu.m, and up to 5.times.10.sup.5 nonmetallic inclusions/mm.sup.3 for nonmetallic inclusions having a particle size of at least 0.3 .mu.m to less than 3 .mu.m, and showing the following average value <.epsilon..sub.f > of a bending fracture strain .epsilon..sub.

Abstract: Disclosed herein is a process for forming an amorphous alloy material capable of showing glass transition, which comprises holding the material between frames arranged in combination; and heating the material at a temperature between its glass transition temperature (Tg) and its crystallization temperature (Tx) and, at the same time, producing a pressure difference between opposite sides of the material, whereby the material is brought into close contact against a forming mold disposed on one side of the material. As an alternative, the forming mold is brought into close contact against the amorphous material in a direction opposite to the pressing direction for the amorphous material. By the above processes, precision-formed products of amorphous alloys can be manufactured and supplied at low cost.

Abstract: An aluminum-based alloy having the general formula Al.sub.x L.sub.y M.sub.z (wherein L is Mn or Cr; M is Ni, Co, and/or Cu; and x, y, and z, representing a composition ratio in atomic percentages, satisfy the relationships x+y+z=100, 75.ltoreq.x.ltoreq.95, 2.ltoreq.y.ltoreq.15, and 0.5.ltoreq.z.ltoreq.10) having a metallographic structure comprising a quasi-crystalline phase possesses high strength and high rigidity. In order to enhance the ductility and toughness of the aluminum-based alloy, the atomic percentage of M may be further limited to 0.5.ltoreq.z.ltoreq.4, and more preferably to 0.5.ltoreq.z.ltoreq.3. The aluminum-based alloy is useful as a structural material for aircraft, vehicles and ships, and for engine parts; as material for sashes, roofing materials, and exterior materials for use in construction; or as materials for use in marine equipment, nuclear reactors, and the like.

Abstract: A composite penetrator has a plurality of dispersed high aspect ratio bodies of refractory heavy metal such as tungsten wires. A matrix of metal surrounds and wets the dispersed bodies for forming an integral penetrator. The matrix metal is characterized by having localized shear band deformation when strained. The heavy metal is selected from the group consisting of tungsten, tantalum, hafnium, uranium and alloys thereof. A variety of matrix alloys may be used which will remain amorphous or microcrystalline in an object as large as the penetrator when cooled from the molten state. An exemplary amorphous alloy comprises 41.25 atomic percent zirconium, 41.25% titanium, 13.75% copper, 12.5% nickel and 22.5% beryllium.

Abstract: An amorphous magnetic material possesses a composition essentially expressed by (Fe.sub.1-a-b N.sub.a M.sub.b).sub.100-x-y Si.sub.x B.sub.y (M denotes at least one kind of element selected from Mn, Cr, Co, Nb, V, Mo, Ta, W and Zr, 0.395.ltoreq.a.ltoreq.0.7, 0.ltoreq.b.ltoreq.0.21, 1-a-b<a, 6.ltoreq.x.ltoreq.18 at %, 10.ltoreq.y.ltoreq.18 at %, respectively). An amorphous magnetic material which has such a Ni rich Fe-Ni base possesses a Curie temperature T.sub.c of 473 to 573K, the maximum magnetic flux density B.sub.m of 0.5 to 0.9T. A ratio of residual magnetic flux density B.sub.r and the maximum magnetic flux density B.sub.m can be controlled according to a required characteristics, and, in the case of being used in a saturable core, is set at 0.60 or more. With an amorphous magnetic material of an inexpensive Fe-Ni base, magnetic characteristics applicable in a high frequency region, thermal stability, surface smoothness can be realized.

Abstract: An alloy material 4 received in a melting hearth 1 is melted by high-density energy supplied from a heat source 5. The molten alloy is transferred to a forced-cooled die 3 having a cavity 2 defining the profile of a product, and quenched to an amorphous state. The alloy has the composition represented by the general formula of Zr.sub.100-a-b-c A.sub.a B.sub.b C.sub.c, wherein the mark A represents one or more elements selected from Ti, Hf, Al and Ga, the mark B represents one or more elements selected from Fe, Co, Ni and Cu, the mark C represents one or more elements selected from Pd, Pt, Au and Ag, and the marks a-c represent the atomic ratios of respective elements A-C under the conditions of a=5-20, b=15-45, c.ltoreq.10 and a+b+c=30-70. The differential temperature region .DELTA.T (=T.sub.x -T.sub.g) in the supercooled liquid phase of the Zr alloy represented by the difference between the crystallization point T.sub.x and the glass transition point T.sub.g is preferably 100 K or more.

Abstract: Mechanically alloyed hydrogen storage materials having a major atomic percentage of magnesium and a minor atomic percentage of at least two elements selected from the group consisting of nickel, molybdenum, iron and titanium. Preferably the mechanical alloy comprises a multi-phase material, including at least one amorphous phase. Also, the at least two elements are preferably either nickel (from about 5 to 15 at. %) and molybdenum (from about 0.5 to 5 at. %) or iron (from about 5 to 15 at. %) and titanium (from about 5 to 15 at. %). The hydrogen storage materials are created by mechanical alloying in a milling apparatus under an inert atmosphere, such as argon, or a mixed atmosphere, such as argon and hydrogen. The speed and length of the milling are varied.

Abstract: The magnetic metal composition of a Co-based alloy includes additives to produce an amorphous condition in the alloy and also includes amounts of Rh to increase the corrosion resistance of the alloy. By adding the amorphous-producing materials and selected amounts of Rh, the corrosion resistance of the resulting Co-based alloys has been found to be considerably improved over that of the base amorphous Co alloy without rhodium.

Abstract: The present invention is directed to provide a Fe based glassy alloy which exhibits soft magnetic characteristics at room temperature, has a thickness greater than that of a conventional amorphous alloy prepared by a liquid quenching process and can be easily formed in bulk. The Fe based glassy alloy in accordance with the present invention has a temperature distance .DELTA.T.sub.x, expressed by the equation .DELTA.T.sub.x =T.sub.x -T.sub.g, of a supercooled liquid of not less than 35.degree. C., wherein Tx indicates crystallization temperature and Tg represents glass transition temperature.

Abstract: An improved elastic member (24) for micromechanical devices (12). The micromechanical device (12) includes a stationary member (28) and a moving member (26) which are connected together by a elastic member (24). Because of repeated and frequent movement of the moving member (26), the elastic member (24) can become permanently flexed or deformed, resulting in poor operation of the device. Aluminum alloys are formed to include oxygen, in combination with nitrogen if desired, to obtain a film with dramatically reduced load relaxation characteristics. Oxygen is added to an Argon sputter gas during deposition, and an amorphous film is produced.

Abstract: The present invention provides an Fe-based alloy foil for liquid phase diffusion bonding of Fe-based material by enabling bonding in oxidizing atmospheres at relatively high bonding temperatures to minimize thermal influence on the base material (the material to be bonded) and, thereby, ensures production of a bonded joint having a uniform microstructure and a good bonded joint strength and enables reduction in the bonding time. The Fe-based alloy foil contains, as essential elements, one of 1.0 to 20.0% P and 1.0 to 20.0% B, 1.0 to 20.0% Si, and 0.1 to 20.0% V, in terms of atomic percentage, the balance substantially of Fe and unavoidable impurities, and has a thickness of 3.0 to 100 .mu.m. Alternatively, the Fe-based alloy foil contains, as essential elements, 1.0 to 20.0% P, 1.0 to 20.0% Si, and 0.1 to 20.0% V, and 1.0 to 20.0% B, in terms of atomic percentage, the balance substantially of Fe and unavoidable impurities, and has a thickness of 3.0 to 200 .mu.m.

Abstract: Mechanically alloyed hydrogen storage materials having a major atomic percentage of magnesium and a minor atomic percentage of at least two elements selected from the group consisting of nickel, molybdenum, iron and titanium. Preferably the mechanical alloy comprises a multi-phase material, including at least one amorphous phase. Also, the at least two elements are preferably either nickel (from about 5 to 15 at. %) and molybdenum (from about 0.5 to 5 at. %) or iron (from about 5 to 15 at. %) and titanium (from about 5 to 15 at. %). The hydrogen storage materials are created by mechanical alloying in a milling apparatus under an inert atmosphere, such as argon, or a mixed atmosphere, such as argon and hydrogen. The speed and length of the milling are varied.

Abstract: A high-strength and high-ductility aluminum-base alloy consisting of a composition of general formula: Al.sub.ba1 Mn.sub.a Si.sub.b or Al.sub.ba1 Mn.sub.a Si.sub.b TM.sub.c (wherein TM is one or more elements selected from the group consisting of Ti, V, Cr, Fe, Co, Ni, Cu, Y, Zr, La, Ce and Mm; and a, b and c are, in atomic percentages, 2.ltoreq.a.ltoreq.8, 0.5.ltoreq.b.ltoreq.6, 0<c.ltoreq.4, and a.gtoreq.b), wherein the alloy contains quasi-crystals. The an aluminum-base alloy have superior mechanical properties such as high hardness, high strength and high ductility.

Abstract: A composite structure including a substrate and a heat protection element on the substrate, wherein the heat protection element includes a quasicrystalline aluminum alloy of one or a number of quasicrystalline phases which are either quasicrystalline phases in the strict sense, or approximating phases, wherein the quasicrystalline phases exhibit a thermal diffusivity, measured at ambient temperature, lower than 2.5.times.10.sup.-6 m.sup.2 /s, and a thermal diffusivity measured in the temperature range 650.degree.-750.degree. C. which does not exceed the thermal diffusivity measured at ambient temperature by more than a factor of 3, and wherein the quasicrystalline aluminum alloy comprises Al.sub.a Pd.sub.b Mn.sub.c X.sub.d Y.sub.e T.sub.f I.sub.

Abstract: Novel hydrogenated amorphous silicon alloys are disclosed. Hydrogenated amorphous silicon alloys produced by PECVD are disclosed. A method is also disclosed for the preparation of novel hydrogenated amorphous silicon alloys for use as thin films. The method comprises subjecting a mixed gas of gas-phase silicon compounds and other gas-phase alloy element compounds to plasma enhanced chemical vapor deposition in a reaction zone such that the alloy formed is deposited on a substrate.

Abstract: An Fe-based amorphous alloy having a compositional formula in atomic percent represented by Fe.sub.100-a-b-c-d-e-f Al.sub.a Ga.sub.b P.sub.c C.sub.d B.sub.e Si.sub.f, wherein a to f satisfy 4.ltoreq.a.ltoreq.6, 1.ltoreq.b.ltoreq.3, 9.ltoreq.c.ltoreq.12, 5.ltoreq.d.ltoreq.7, 3.ltoreq.e.ltoreq.5 and 0.25.ltoreq.f.ltoreq.4. The Fe-based amorphous alloy is an amorphous magnetic material having an excellent amorphous phase-forming ability, and can easily form an amorphous material having a thickness of 1.5 mm or above by a mold casting method realizing a cooling speed of about 10.sup.3 K/s. Also, because the amorphous alloy has a supercooled liquid region of 50 K or larger, by applying a working method utilizing a super cooled state, amorphous magnetic materials of various form can be prepared.

Abstract: A steel wire is composed mainly of fine pearlite and/or coarse pearlite, where the lamellar cementite in the pearlite is amorphous or amorphous-like. Alternatively, the wire may be composed mainly of bainite, where the cementite in the bainite is amorphous or amorphous-like. To manufacture the steel wire, a starting steel product is subjected repeatedly to patenting and cold drawing, and then subjected to final drawing at a true strain of 2.0 or above while cooling. The steel wire is higher in strength and toughness than wire whose lamellar cementite consists of nano crystals. The steel wire does not suffer any delamination when subjected to torsion.

Abstract: A method of treatment of a shape memory alloy involves shot peening of the alloy sample, thereby causing a crystal to amorphous transition of a surface layer of the sample without substantially affecting bulk characteristics of the material, particularly its shape memory behavior and biocompatibility. The method may be used for surface hardening and to reduce coefficients of friction. The method may be advantageously used for treating tissue sutures and orthodontic devices such as dental archwires.

Abstract: A magnetic storage medium comprises a keeper layer of soft magnetic, saturable material disposed upon a magnetic storage layer. The keeper layer is disposed above the magnetic storage layer, and a non-magnetic "break" layer may be used between the keeper and the storage layer to reduce the exchange coupling between these layers. To increase the ability of the keeper layer to shunt flux from the magnetic storage layer, a longitudinal anisotropy is induced in the keeper layer. This establishes a desired magnetic orientation of the keeper which facilitates maintaining the regularity (i.e., relative uniformity) of the transitions, and reducing the magnetic interaction between transitions as the spacing between transitions is reduced to provide denser media. Specifically, the longitudinal anisotropy may be oriented either circumferentially or radially relative to the plane of rotation of the magnetic storage layer.

Abstract: A heating pipe including a substantially tubular, electrically insulative inner element configured to allow flow of a liquid therethrough. An electric heating element in the form of a substantially flat ribbon of overheated amorphous metallic alloy is wound in a substantially helical pattern around the inner element. The helical pattern defines adjacent, electrically insulated windings. The inner element electrically insulates the heating element from liquid in the inner element. An electrically insulative outer element is provided for electrically and thermally insulating the heating element from the surrounding ambient environment.

Abstract: An aluminum-based alloy having the general formula Al.sub.100 -(a+b)Q.sub.a M.sub.b (wherein Q is V, Mo, Fe, W, Nb, and/or Pd; M is Mn, Fe, Co, Ni, and/or Cu; and a and b, representing a composition ratio in atomic percentages, satisfy the relationships 1.ltoreq.a.ltoreq.8, 0<b<5, and 3.ltoreq.a+b.ltoreq.8) having a metallographic structure comprising a quasi-crystalline phase, wherein the difference in the atomic radii between Q and M exceeds 0.01 .ANG., and said alloy does not contain rare earths, possesses high strength and high rigidity. The aluminum-based alloy is useful as a structural material for aircraft, vehicles and ships, and for engine parts; as material for sashes, roofing materials, and exterior materials for use in construction; or as materials for use in marine equipment, nuclear reactors, and the like.

Abstract: A composite material comprises an aluminum or aluminum alloy matrix having generally spherical, atomized quasicrystalline aluminum-transition metal alloy reinforcement particles disposed in the matrix to improve mechanical properties. A composite article can be made by consolidating generally spherical, atomized quaiscrystalline aluminum-transition metal alloy particles and aluminum or aluminum alloy particles to form a body that is cold and/or hot reduced to form composite products, such as composite plate or sheet, with interfacial bonding between the quasicrystalline particles and the aluminum or aluminum alloy matrix without damage (e.g. cracking or shape change) of the reinforcement particles. The cold and/or hot worked compositehibits substantially improved yield strength, tensile strength, Young's modulus (stiffness).

Abstract: A soft magnetic alloy used as a radio frequency magnetic material and having high resistivity and high magnetic permeability in a high frequency band, and an inductor, a wave absorber and antenna each comprising the soft magnetic alloy. The soft magnetic alloy has a crystal phase containing Co as a main component and at least one element T selected as a primary component from Fe, Ni, Pd, Mn and Al, and having a face-centered cubic structure, a body-centered cubic structure or a mixture thereof having an average crystal grain size of 30 nm or less; and a ferromagnetic amorphous phase surrounding the crystal phase and containing at least one element M selected from Ti, Zr, Hf, Nb, Ta, Mo, W, Y and rare earth elements, O, N, C, B, at least one oxide of element M, Fe and element T.

Abstract: A process resulting in enhanced pole performance, relative to permalloy poles, in narrow track magnetic devices. A preferred process includes increasing the anisotropy field of the pole material while maintaining an acceptable coercivity level and near zero magnetostriction. One embodiment utilizes a NiCoFe alloy containing 22% cobalt by weight, heat treated in an easy axis magnetic field in a non-oxidizing atmosphere. This process achieves favorable domain structures at narrow pole tip widths.

Abstract: A magnetic storage system includes a magnetic storage medium comprising a keeper layer of relatively low permeability soft magnetic material deposited upon a magnetic storage layer or between multiple magnetic storage layers. The low permeability keeper layer may be disposed either above or below the magnetic storage layer. In the unsaturated state, the keeper layer acts as a shunt path for flux emanating from recorded transitions on the magnetic storage layer, producing an image field of the recorded transitions in the keeper. This shunt path prevents signal flux emanating from the recorded transitions from reaching the head. To read data from a recorded transition on the magnetic storage layer, a bias current is applied to windings of the head, creating a bias flux which saturates a portion of the keeper layer. Once saturated, this portion of the keeper can no longer shunt flux emanating from the recorded transition, which is the region represented by the head reproduce transducer.

Abstract: A rare earth metal-nickel hydrogen storage alloy having a composition represented by the formula (1)RNi.sub.x-y M.sub.y (1)(wherein R stands for La, Ce, Pr, Nd, or mixtures thereof, M stands for Co, Al, Mn, Fe, Cu, Zr, Ti, Mo, Si, V, Cr, Nb, Hf, Ta, W, B, C, or mixtures thereof, x satisfies the formula of 3.5.ltoreq.x<5, and y satisfies the formula of 0<y.ltoreq.2, crystals in the alloy having a LaNi.sub.5 type single phase structure, the alloy including in an amount of not less than 5 volume % and less than 95 volume % thereof crystals each containing not less than 2 and less than 17 antiphase boundaries extending perpendicular to C-axis of a grain of the crystal in the alloy per 20 nm along the C-axis, a method of producing the same, and an anode for a nickel hydrogen rechargeable battery containing as an anode material the above rare earth metal-nickel hydrogen storage alloy and an electrically conductive material.

Abstract: A magnetic core is obtained by winding or laminating at least one alloy ribbon and has excellent squareness characteristic and magnetic saturation characteristic in a high frequency region wherein the squareness ratio of the magnetic core is improved by restricting the surface roughness of the alloy ribbon to specific regions.

Abstract: A magnetic theft detection system includes a glassy metal alloy strip having a value of magnetostriction near zero. The strip has been annealed to produce a step change in the magnetization versus applied field behavior (B-H loop) thereof, and has a composition consisting essentially of the formula.(Co Fe).sub.100-x (Si B).sub.xwhere20.ltoreq.x.ltoreq.23and15.4.ltoreq.Co/Fe.ltoreq.15.9and7.5.ltoreq.B/Si.ltoreq.9.Annealing of the metal alloy strip in an oxidizing atmosphere causes the formation of a surface oxide followed by a distinctive crystalline Co-layer with thickness in the range of 1 to 2 .mu.m. The thickness of the crystalline Co-layer determines the value of the threshold magnetic field and is controlled by the annealing conditions and the as cast surface chemistry and structure.

Abstract: Quasi-crystalline aluminum alloy ultrafine particles are produced by a gas-phase reaction and consist of at least one alloy element from the group of V, Cr, Mn, Fe, Co, Ni, Cu and Pd, for example palladium (Pd) in an amount represented by 20 atomic %.ltoreq.Pd.ltoreq.30 atomic %, and the balance of aluminum. Palladium has a catalyst power, and the ultrafine particles have a large specific surface area, because they have a particle size d.ltoreq.200 nm. Such ultrafine particles have a high catalytic activity in a methanol decomposing reaction and also have a good retention of catalytic activity.

Abstract: A casting charge of a bulk-solidifying amorphous alloy is cast into a mold from a temperature greater than its crystallized melting temperature, and permitted to solidify to form an article. The oxygen content of the casting charge is limited to an operable level, as excessively high oxygen contents produce premature crystallization during the casting operation. During melting, the casting charge is preferably heated to a temperature above a threshold temperature to eliminate heterogeneous crystallization nucleation sites within the casting charge. The casting charge may be cast from above the threshold temperature, or it may be cooled to the casting temperature of more than the crystallized melting point but not more than the threshold temperature, optionally held at this temperature for a period of time, and thereafter cast.