Abstract: A unique iron base alloy for wear resistant applications, characterized in one aspect by its hardening ability when exposed to a certain temperature range, is useful for valve seat insert applications. The alloy also possesses excellent wear resistance, hot hardness and oxidation resistance. The alloy comprises less than 0.1 wt % carbon; about 18 to about 32 wt % molybdenum, about 6 to about 15 wt % chromium, about 1.5 to about 3% silicon, about 8 to about 15 wt % cobalt and at least 40% iron, with less than 0.5 wt % nickel. In another aspect, for lower temperature applications, the cobalt is optional, the nickel content can be up to 14 wt %, but the molybdenum must be in the range of about 29% to about 36%. In one further aspect, for higher temperature applications, the cobalt is optional, but may be used up to 15 wt %, nickel must be used at a level of between about 3 and about 14 wt %, and the molybdenum will be in the range of about 26 to about 36 wt %.

Abstract: In a process for producing a workpiece from a chromium alloy, consisting of: 1 32-37 % by weight chromium, 28-36 % by weight nickel, max. 2 % by weight manganese, max. 0.5 % by weight silicon, max. 0.1 % by weight aluminum, max. 0.03 % by weight carbon, max. 0.025 % by weight phosphorus, max. 0.01 % by weight sulfur, max. 2 % by weight molybdenum, max. 1 % by weight copper, 0.3-0.

Abstract: An austenitic, paramagnetic and corrosion-resistant material, particularly in media with high chloride concentrations, the material having high strength, yield strength, and ductility, including carbon, silicon, chromium, manganese, nitrogen, and optionally, nickel, molybdenum, copper, boron, and carbide-forming elements. The material is preferably substantially completely austenitic. A process utilizing alloying technology that includes a deformation and synergistically results in production of a ferrite-free material that is reliably paramagnetic, is corrosion-resistant, and has high yield strength, strength, and ductility. The material can be very beneficially used, for example, in connection with oil field technology, such as for bore rods and drilling string components as well as for precision-forged components, and for high strength attachment and connection elements.

Abstract: The invention is directed to anti-corrosive alloys and relates in particular to an alloy containing cobalt, chromium, aluminum, yttrium, silicon, a metal from the second main group, together with the corresponding oxide, in the following proportions: chromium (Cr) 26.0-30%; aluminum (Al) 5.5-13.0%; yttrium (Y) 0.3-1.5%; silicon (Si) 1.5-4.5%; metal from the second main group (magnesium, calcium, barium, strontium) 0.1-2.0%; oxide of the corresponding metal from the second main group 0.1-2.0%; cobalt (Co) remaining percentage. Preferably, tantalum (Ta) is also added in a proportion of 0.5-4.0%, and the remaining percentage of cobalt is replaced by a remaining percentage of Me, Me being understood to mean a metal which may be nickel (Ni) or iron (Fe) or cobalt (Co) or a composition comprising Ni—Fe—Co, Ni—Fe, Ni—Co, Co—Fe.

Abstract: Soft magnetic alloy of the iron-nickel type, the chemical composition of which comprises, by weight: 40%≦Ni+Co≦65%; 0%≦Co≦7%; 2%≦Cr≦5%; 1%≦Ti≦3%; 0%≦Al≦0.5%; 0%≦Mn+Si≦2%; optionally, up to 3% Mo, 2% W, 2% V, 1.5% Nb, 1% Ta and 3% Cu, the sum of the Cr, Mo, W, V, Nb, Ta and Cu contents being less than 7% and the sum of the Mo, W, V, Nb, Ta and Cu contents being less than 4%; the balance being iron and impurities, such as carbon, sulfur and phosphorus, resulting from the smelting process, the chemical composition furthermore satisfying the relationships: Cr<5−0.015×(Ni+Co−52.5)2, if: Ni+Co≦52.5; Cr<5−0.040×(Ni+Co−52.5)2, if: Ni+Co≧52.5; the alloy having a saturation induction Bs of greater than 0.9 tesla, a coercive field of less than 10 A/m, an electrical resistivity p of greater than 60 &mgr;&OHgr;.cm and a hardness of greater than 200 HV. Process for manufacturing the alloy and uses.

Abstract: An article of equipment intended to be submerged in molten zinc, molten aluminum and mixtures thereof, said article containing an alloy material comprised of: Percent Carbon 1.6-2.6 Chromium 15.0-30.0 Tungsten 10.0-30.0 Molybdenum 2.0-8.0 Iron 10.0-50.0 and including, vanadium, niobium, cobalt, boron, and manganese and being substantially free of silicon.

Abstract: It is an objective of the present invention to provide low thermal expansion alloys having excellent high temperature mechanical properties, the oxidation resistance, and the electrical conductivity by modifying the basic Cr--W--Fe alloy in order to meet various industrial demands including prolonging the life of plant machinery being operated at high temperature and a scaling-up solid oxide fuel cell, so that the coefficient of thermal expansion can be approximated to those of stabilized zirconia. In order to achieve these objectives, Co is added to Cr--W--Fe system alloy possessing an excellent thermal matching characteristic to stabilized zirconia in order to enhance the high temperature mechanical properties without changing original properties of thermal matching, the oxidation resistance and the electrical conductivity. Cr and Al are added in order to further improve the oxidation resistance and to approximate the coefficient of surface thermal expansion to that of stabilized zirconia.

Abstract: A powder-metallurgy produced high-speed steel article having a combination of high hardness and wear resistance, particularly at elevated temperatures. This combination of properties is achieved by the combination of W, Mo, V, and Co. The article is particularly suitable for use in the manufacture of gear cutting tools, such as hobs, and surface coatings.

Abstract: An article suitable for submergence in molten zinc, aluminum and aluminum/zinc melts. The article is formed of an alloy comprising from greater than 1.0% to less than 5.0% carbon; from greater to 10.0% to less than 30.0% chromium; from greater than or equal to 0.0% nickel to less than 30.0% nickel; from greater than 1.0% to less than 15.0% tungsten; from greater than 1.0% to less than 10.0% molybdenum; from greater than 0.0% to less than 10.0% vanadium; from greater than 0.0% to less than 10.0% niobium; from greater than 0.0% to less than 20.0% percent cobalt; from greater than 0.0% to less than 5.0% boron; from greater than 10.0% to less than 50.0% iron; from greater than or equal to 0.0% to less than or equal to 6.0% zirconium; from greater than 2 to less than 6.5% manganese; and from greater than or equal to 0.0% to less than 1.0% silicon.

Abstract: The present invention relates to a material for hydrogen-storage constituted by Ti-Mn alloy system which has a high hydrogen-storage capacity, plateau hydrogen dissociation equilibrium pressure, hypostoichiometric composition and crystal structure of C14. Ti-Mn alloy system for hydrogen-storage of the invention which has a C14 crystal structure, is represented as: Ti.sub.u Zr.sub.v Mn.sub.w Cr.sub.x V.sub.y X.sub.z, wherein, X is at least one of element selected from the group consisting of Fe, Al and Ni; u, v, w, x, y and z are mole numbers of each components; 0.7<u<1.0; 0<v<0.3; 1.0.ltoreq.w.ltoreq.1.3; 0.1.ltoreq.x.ltoreq.0.4; 0<y<0.3; 0.ltoreq.z.ltoreq.0.2; 0.7<u+v<1.0; 1.4.ltoreq.w+x.ltoreq.1.7; and, 1.3.ltoreq.w+x+y+z<2.0.

Abstract: A hydrogen absorbing alloy for use in an environment where the alloy has the possibility of contacting oxygen is capable of inhibiting impairment of the hydrogen absorbing ability thereof when coming into contact with oxygen. The alloy has a composition represented in atomic ratio by Ti.sub.1-x Y.sub.x Mn.sub.y wherein x and y are in the range of 0<x.ltoreq.0.2 and 1.5.ltoreq.y.ltoreq.2.0, respectively, and comprises a C14-type crystal structure of Laves phase, the Laves phase having a segregaton phase of high Y concentration. Ti can be replaced by Hf and/or Zr within the range of over 0 to not greater than (1-x)/2 included in 1-x for the Ti atom. Mn can be replaced by V or Fe within the range of over 0 to not greater than y/2 included in y for the Mn atom.

Abstract: The present invention provides a Fe--Mn--Cr--Al cryogenic alloy having high ductility, strength, toughness and corrosion-resistance, and a process for preparing the same. The cryogenic structural alloy of the invention is prepared by the steps of: air-induced melting of a metallic alloy composition which consists of Fe 48.6 to 64.7 wt %, Mn 25.0 to 35.0 wt %, Cr 10.0 to 13.0 wt %, Al 0.1 to 2.0 wt %, C 0.1 to 0.4 wt % and Si 0.1 to 1.0 wt %; hot-rolling of the melted alloy at 1,090.degree. to 1,110 .degree. C.; and, solution heat treatment of the hot-rolled alloy at 1,040.degree. to 1,060.degree. C. for 50 to 70 minutes.

Abstract: Metallic materials which possess suitable characteristics for serving as an intermediate layer between a thermal barrier coating and a matrix substrate, or as a separator for a solid oxide fuel cell, contain 15 to 40 wt % Cr, 5 to 15 wt % W, 0.01 to 1 wt % M (where M is one or more than two elements chosen from Y, Hf, Ce, La, Nd, and Dy), 0.001 to 0.01 wt % B and a balance of Fe. The average value of the coefficient of thermal expansion of the metallic material is in a range from more than 12.0.times.10.sup.-6 /K to less than 13.0.times.10.sup.-6 /K in a temperature range from room temperature to 1,000.degree. C., and the value is close to that of stabilized zirconia. The metallic materials display excellent high temperature oxidation resistance.

Abstract: A chromium steel sheet having excellent press formability, particularly deep-drawing formability and resistance to secondary work brittleness. The construction is a chromium steel sheet including C: not more than 0.03 wt %, Si: not more than 1.0 wt %, Mn: not more than 1.0 wt %, P: not more than 0.05 wt %, S: not more than 0.015 wt %, Al: not more than 0.10 wt %, N: not more than 0.02 wt %, Cr: 5-60 wt %, Ti: 4(C+N)-0.5 wt %, Nb: 0.003-0.020 wt %, B: 0.0002-0.005 wt %, and, if necessary, one or more selected from Mo: 0.01-5.0 wt %, Ca: 0.0005-0.01 wt % and Se: 0.0005-0.025 wt %, and the balance being Fe and inevitable impurities.

Abstract: It is directed to provide an Fe--Cr alloy exhibiting an excellent ridging resistance and surface characteristic, comprising:0.01% (percent by weight; the same as below) or less of C;1.0% or less of Si;1.0% or less of Mn;0.01 or less of S;9% or more to 50% or less of Cr;0.07% or less of A1;0.02% or less of N;0.01% or less of O; andthe balance being Fe and inevitable impurities;wherein the C and N contents satisfy the following equations:N(%)/C(%).gtoreq.2,and0.006.ltoreq.[C(%)+N(%)].ltoreq.0.025;andthe Ti content satisfy the following equations:{Ti(%)-2.times.S(%)-3.times.O(%)}/[C(%)+N(%)].ltoreq.4,and[Ti(%)].times.[N(%)].ltoreq.30.times.10.sup.-4.

Abstract: Disclosed is a manufacture and coating method of mechanical products using ferrous alloy in order to improve wear, corrosion, and heat resistances of the mechanical products which are exposed to friction and wear environments with or without lubricating conditions. The mechanical products of the invention include rotation contact parts such as bush and shaft in the inside of caterpillar roller, mechanical seal under high surface pressure, and drawing dice and plug under sliding friction stress. A ferrous alloy composition used for coating in the invention comprises Cr:18.0-42.0 wt %, Mn: 1.0-3.2 wt %, B:3.0-4.5 wt %, Si: 1.0-3.0 wt %, C: less than 0.3 wt %, inevitably incorporated impurities, and Fe for the rest of content. A ferrous alloy composition used for manufacturing bush type product comprises C: less than 4.5%, Si:2.5%, Mn:less than 2%, Cr:0.5-35%, and Fe for the rest of content.

Abstract: A Ni free ferrous nonmagnetic alloy having excellent corrosion resistance and workability and high cost performance is described.The alloy comprises, by weight, 9 to 25% Cr, 3 to 35% Mn, 3 to 40% Co and the balance Fe and incidental impurities, and sum of Mn and 0.6Co is in accordance with a general relationship as indicated by formula 1/ , and preferably a restricted relationship as indicated by formula 2/ .19%.ltoreq.Mn+0.6 Co.ltoreq.40% 1/22%.ltoreq.Mn+0.6 Co.ltoreq.36% 2/One type of alloy of this invention further containing 0.02 to 2% Ag has excellent machinability as well as corrosion resistance, workability and nonmagnetism.

Abstract: Dense monolithic SiC or SiC ceramic composites are strongly bonded using brazing compositions which, in their preferred composition, include a braze alloy consisting essentially of less than 50 weight percent silicon and at least two metals from the group of Fe, Cr, Co and V and produce a joint suitable for use in a high neutron flux environment. Brazing is carried out at a temperature of about 1200.degree. to 1500.degree. C. in an inert atmosphere and is complete in about 15 minutes. Broadly, a genus of brazing compounds are disclosed which include between about 10 and about 45 weight percent silicon and at least two elements selected from the following group: Li, Be, B, Na, Mg, P, Sc, Ti, V, Cr, Mn, Fe, Co, Zn, Ga, Ge, As, Rb, Y, Sb, Te, Cs, Pr, Nd, Ta, W and Tl.

Abstract: A method of protecting and a protective coating for metal components formed of nickel or cobalt-based superalloys are disclosed. The protective coating essentially consists of the following constituents (in percent by weight):1 to 20% rhenium,15 to 50% chromium,0 to 15% aluminum, the share of chromium and aluminum taken together being at least 25% and at most 53%,0.3 to 2% in total of at least one reactive element from the group consisting of the rare earths, and0 to 3% silicon, impurities, as well as the following elective components:0 to 5% hafnium,0 to 12% tungsten,0 to 10% manganese,0 to 15% tantalum,0 to 5% titanium,0 to 4% niobium, and0 to 2% zirconium,the total share of the elective components being from 0 to a maximum of 15%, and a remainder primarily being at least one of the elements iron, nickel, and cobalt. The protective coating is primarily suited for use with metal components in gas turbines and aircraft engines.

Abstract: A beta titanium alloy having exceptional high temperature strength properties in combination with an essential lack of combustibility is described. In its basic form the alloy contains chromium, vanadium and titanium the nominal composition of the basic alloy being defined by three points on the ternary titanium-vanadium-chromium phase diagram: Ti-22V-13Cr, Ti-22V-36Cr, and Ti-40V-13% Cr. The alloys of the invention are comprised of the beta phase under all the temperature conditions, have strengths much in excess of the prior art high strength alloys in combination with excellent creep properties, and are nonburning under conditions encountered in gas turbine engine compressor sections.

Abstract: A protective coating for metal components formed of nickel or cobalt-based superalloys essentially consists of the following constituents (in percentages by weight):1 to 20% rhenium,22 to 50% chromium,0 to 15% aluminum, the share of chromium and aluminum taken together being at least 25% and at most 53%,0.3 to 2% in total of at least one reactive element from the group consisting of the rare earths, and0 to 3% silicon,impurities, as well as the following elective components:0 to 5% hafnium,0 to 12% tungsten,0 to 10% manganese,0 to 15% tantalum,0 to 5% titanium,0 to 4% niobium, and0 to 2% zirconium,the total share of the elective components being from 0 to a maximum of 15%, and a remainder primarily being at least one of the elements iron, nickel, and cobalt.

Abstract: A magnetic core comprised of an amorphous alloy ribbon wound into a toroidal shape, wherein the said amorphous alloy has a composition of the formula:(Co.sub.1-x-y-z Fe.sub.x Ni.sub.y Mn.sub.z).sub.100-a-b-c M.sub.a Si.sub.b B.sub.cwherein M is at least one element selected from the group consisting of Nb, Cr and Mo, and x, y, z, a, b and c are numbers which satisfy relations of 0<a.ltoreq.6, 13.ltoreq.b.ltoreq.16, 7.ltoreq.b.ltoreq.10, 0<x.ltoreq.0.1, 0.ltoreq.y.ltoreq.0.2 and 0.ltoreq.x.ltoreq.0.13 respectively, said amorphous alloy after heat treatment having a rectangular ratio Br/Bs of at least 80%, a Bs value in a range of 5 KG to 8 KG and a stress relief ratio of at least 75%.

Abstract: This invention relates to heat and corrosion resistant alloys for structural parts in industrial furnaces and similar installations requiring hot strength, long life and resistance to hot gas corrosion, carburization and thermal fatigue, and to master alloys to aid in the production of these alloys. The alloys consist of additions of less than one percent by weight each of the components tungsten, zirconium, molybdenum, columbium, titanium and one or more rare earth elements to base alloys of the types standardized by the Alloy Castings Institute Division of the Steel Founders Society of America or to similar base alloys. The master alloys consist of all of these components, with the possible exception of Mo, combined together in the desired proportions, possibly along with some combination of iron, nickel or chromium in total content of up to about half of the master alloys by weight as partial diluents. The resultant master alloys are always denser than molten baths of the base heat resistant alloys.

Abstract: A matrix-bonded carbide-containing material of high hardness is prepared using a mixture containing a matrix alloy having a composition in weight percent of from about 15 to about 45 percent chromium, from 0 to about 3 percent silicon, from about 2 to about 6 percent boron, from about 3 to about 11 percent titanium (either as metal or as a compound), balance iron and impurities, and a mass of tungsten carbide particles, the tungsten carbide particles preferably being present in an amount of from about 15 to about 60 percent by weight of the total mixture and the matrix alloy preferably being present in an amount of from about 85 to about 40 percent by weight of the total mixture. The matrix alloy is melted to produce a flowable mixture having a liquid phase and solid tungsten carbide particles, and thereafter solidified. During melting, the tungsten carbide particle size is reduced by interaction with the liquid phase.

Abstract: Reduction of chromium oxide is performed by utilizing refinement or reduction container having top-blowing capability. Chromium oxide is charged in the molten iron bath in the aforementioned container. Content of slag is adjusted to maintain the following condition:CaO/SiO.sub.2 :2.1 to 3.5MgO/Al.sub.2 O.sub.3 :0.6 to 0.

Abstract: Low density, high temperature and aluminum-rich intermetallic alloys displaying excellent elevated temperature properties, including oxidation resistance, are disclosed. Based on the aluminum/titanium system, specifically modifications of Al.sub.3 Ti compositions, useful alloys are derived from changes in crystal structure and properties effected by selected-site substitution alloying with manganese and/or chromium, and, where used, vanadium, or equivalent site-substituting alloying elements.

Abstract: This invention relates to iron-base alloy compositions, nickel containing austenitic ferrous alloy compositions (especially low nickel compositions) and dopants added to low nickel austenitic alloys as a means of improving the elevated temperature oxidation resistance of the resultant material.

Abstract: A method for manufacturing a chromium-bearing pig iron comprises the steps of charging cold bond pellets, iron ore and coke lumps into a blast furnace from above and blowing a gas containing more than 50% oxygen therein and tuyere nose flame temperature control agent into the blast furnace through the tuyere, the cold bond pellets being comprised of powdered chromium ore and powdered coke as principal feed materials. The cold bond pellets are manufactured by performing a mixing, a pelletizing and a curing step. The tuyere nose flame temperature control agent is a top gas, steam, water or CO.sub.2, which is used to control the flame temperature to 2000.degree. to 2900.degree. C.

Abstract: A substantial gain in the properties of conventional FeCrAlY is achieved by adding RuAl to a melt of the conventional material. The resultant composition has a use temperature above the melting point of nickel base superalloys and has good strength and ductility properties to permit its use as a high temperature structural material.

Abstract: An Fe-base build-up alloy excellent in resistance to corrosion and wear is disclosed. This alloy comprises in weight percent:C: from 0.005 to 1.6%,Mn: from 4 to 28%,Cr: from 12 to 36%,Mo: from 0.01 to 9%,Hf: from 0.005 to 15%,N: from 0.01 to 0.9%, andoptionally contained:Si: from 0 to 5%,Ni: from 0 to 30%, andone or both of:Nb and W: from 0 to 6%, andthe balance being Fe and incidental impurities.

Abstract: An iron/copper/chromium alloy material for a high-strength lead frame or pin grid array, which comprises 20 to 90% by weight of Cu and 2.5 to 12% by weight of Cr, with the balance being mainly iron, and which has an average grain size number of at least 10 in each of the iron/chromium phase and the copper phase, is prepared by continuous casting, cold-working, and aging.

Abstract: Amorphous alloys containing zirconium as an amorphus forming metal and having the formula X.sub..alpha. Z.sub..gamma. wherein X is at least one of Fe, Co and Ni, .alpha. is 80 to 92 atomic %, Z is zirconium, .gamma. is 8 to 20 atomic % and the sum of .alpha. and .gamma. is 100 atomic %, cause very little variation of properties during aging and embrittlement because they contain no metalloid as the amorphous forming element, and they further have excellent strength, hardness, corrosion resistance and heat resistance and maintain superior magnetic properties which are characteristic of iron group elements.

Abstract: The alloys according to the invention are the Co-base alloys which contain C, Si, Cr, W, Mo, Ti and Al, and further, as necessary, contain one, two or more elements among Mn, Ni, Fe, Nb and B, having high thermal shock resistance and lead oxide corrosion resistance. Furthermore the alloys can be used for build-up welding and casting, therefore they demonstrate excellent performance when used in the manufacture of engine valves and valves seats of high performance engines.

Abstract: The invention relates to magnetic Pd-Co alloys for use in dental prostheses, in particular in root caps. The alloys contain, by weight, 40-60% Pd, 20-59% Co, 0-40% Ni, 0.1-5% Cr, 0.05-0.2% Re, 0.01-0.5% Fe, 0.5-3% Ga, 0-0.1% B, 0-5% Pt or Au, and the gallium may be replaced, in full or in part, by Sn, In, Zn or Mn.

Abstract: The invention relates to removable dental appliances made of cobalt-chromium-cast alloys containing (in % by weight) 0,1 to 1,0% C, 0,05 to 0,5% N, 0,5 to 3,0% Si, 0,3 to 10,0% Mn, 20 to 35% Cr, 2 to 10% Mo, 5 to 40% Fe, at least 20% Cobalt as rest including incidental impurities.

Abstract: The present invention relates to iron-nickel alloys having improved glass sealing properties. Alloys of the present invention contain from about 30% to about 60% nickel, from about 0.5% to about 3% silicon, from about 0.5% to about 3.5% aluminum and the balance essentially iron. Preferably, the alloys have a total aluminum plus silicon content of less than about 4%. The alloys of the present invention have particular utility in electronic and electrical applications. For example, they may be used as a lead frame or a similar component in a semiconductor package.

Abstract: A spinodal decomposition type ternary magnetic allioy is provided which contains, by weight, 3 to 40% vanadium, 5 to 45% chromium and the balance essentially iron. Optionally the alloy may contain at least one additional element, said additional element being present individually in an amount of 0.1 to 5% by weight and not greater than the amount of either vanadium or chromium. The alloy is easy to work and has excellent hard or semi-hard magnetic properties comparable with those of conventional iron-chromium-cobalt alloys. Yet the alloy is low in material cost and simple and inexpensive to manufacture.

Abstract: Amorphous alloys having high strength, high hardness, high crystallization temperature, high saturation magnetic induction, low coercive force, high magnetic permeability and particularly low deterioration of magnetic properties with lapse of time, have a composition formula ofT.sub.a X.sub.b Z.sub.c or T.sub.a' X.sub.b' Z.sub.c' M.sub.d,whereinT is at least one of Fe, Co and Ni,X is at least one of Zr, Ti, Hf and Y,Z is at least one of B, C, Si, Al, Ge, Bi, S and P,a is 70-98 atomic %,b is not more than 30 atomic %,c is not more than 15 atomic %,sum of a, b and c is 100 atomic %,M is at least one Mo, Cr, W, V, Nb, Ta, Cu, Mn, Zn, Sb, Sn, Be, Mg, Pd, Pt, Ru, Os, Rh, Ir, Ce, La, Pr, Nd, Sm, Eu, Gd, Tb and Dy,a' is 70-98 atomic %,b' is not more than 30 atomic %,c' is not more than 15 atomic %,d is not more than 20 atomic %, andsum of a', b', c' and d is 100 atomic %.

Abstract: A zirconium alloy having a plateau region of equilibrium hydrogen dissociation pressure and a small hysteresis, whose hydrogen dissociation pressure is in a range of 0.6 to 3 atm at 20.degree. C., 1 to 5 atm at 40.degree. C., and 1 to 17 atm at 80.degree. C., the activation of which can be effected according to a single procedure of vacuum evacuation at room temperature and pressurization under a hydrogen pressure of 30 atm at room temperature, and which is comparable or superior in the rates of hydrogen absorption and release, the maximum hydrogen absorbing capacity and effective hydrogen releasing capacity to conventional zirconium alloys. A hydrogen absorbing and releasing material comprising an alloy as mentioned above and thin films of one element selected from Pd, Cu, and Ni, which allows only hydrogen to permeate, and covering the surfaces of particles of the alloy.

Abstract: Hydrogen storage materials are provided by a quaternary alloy of the formula:Zr.sub.1-x Ti.sub.x CrFe.sub.ywherein x has a value in a range from 0.1 to 0.3, and y has a value in a range from 1.2 to 1.4, and their hydrides.

Abstract: Amorphous alloys containing zirconium as an amorphous forming metal and having teh formula X.sub..alpha. Z.sub..gamma. wherein X is at least one of Fe, Co and Ni, .alpha. is 80 to 92 atomic %, Z is zirconium, .gamma. is 8 to 20 atomic % and the sum of .alpha. and .gamma. is 100 atomic %, cause little variation of properties during aging and embrittlement because they contain no metalloid as the amorphous forming element, and they further have excellent strength, hardness, corrosion resistance and heat resistance and maintain superior magnetic properties which are characteristic of iron group elements.

Abstract: An alloy consisting of zirconium, chromium, iron and optionally titanium is characterized in having C14 hexagonal crystal structure and ZrCr.sub.2 stoichiometry. Members of a preferred class of compounds, represented by the empirical formula Zr.sub.1-x Ti.sub.x Cr.sub.2-y Fe.sub.y wherein "x" has a value between 0.0 and 0.9 and "y" has a value of 0.1 to 1.5, are particularly suitable for use as hydrogen storage materials.

Abstract: Directed to a corrosion resistant alloy particularly designed for use in power plant exhaust gas scrubbers which contains about 0.015% to about 0.025% carbon, not more than about 1% manganese, not more than about 0.3% silicon, about 19% to about 22% chromium, about 8.5% to about 9.5% molybdenum, about 30% to about 42% nickel, up to about 0.2% nitrogen, with the nickel and nitrogen contents being so related that at about 30% nickel, the nitrogen content is at least about 0.15%, while at a nickel content of at least about 40%, the nitrogen content does not exceed about 0.03%, the balance being essentially iron, with the iron content in the range of about 28% to about 40%.

Abstract: Quaternary hyperstoichiometric alloys of the formula: ZrCrFeT.sub.x and their hydrides are provided, characterized as having MgZn.sub.2 hexagonal crystal structure wherein T is selected from Mn, Fe, Co, Ni and Cu, and X is a number from 0.1 to 1.0. These alloys readily form hydrides at low hydrogen pressure and are suitable for use as hydrogen storage materials.

Abstract: A process for the production of high purity metals or metallic alloys comprises the steps of:(a) producing a metal or metallic alloy, the non-metallic inclusions of which are, preferably, easily reducible oxides of the base metal;(b) milling the metal or metallic alloy thus obtained and agglomerating the milled metal or metallic alloy with an agglomerating agent and a reducing agent, so as to form balls; and(c) subjecting the balls to a reducing treatment under regulated conditions of reduced pressure and elevated temperature, at which the reducing agent acts on the non-metallic inclusions while substantial sublimation of the alloying metal or metals is avoided.The invention is particularly applicable to the production of high purity chromium.

Abstract: An Fe-Cr-Co type magnet body of columnar structure having a maximum energy product (BH).sub.max of 7 MGOe or higher consisting essentially of, by weight ratio, 5-30% cobalt, 15-40% chromium, 0.1-10% molybdenum, 0.05-1.2% titanium and 0.1-5% vanadium, with the balance being iron and inevitable impurities, said body having been subjected to columnar-crystallization.

Abstract: An austenitic stainless corrosion resistant alloy and articles made therefrom having good resistance to pitting and crevice corrosion in oxidizing chloride-bearing media combined with resistance to general corrosion and to intergranular corrosion in oxidizing media, containing in weight percent about______________________________________ w/o ______________________________________ C 0.06 Max. Mn 1.4 Max. Si 0.9 Max. P 0.035 Max. S 0.035 Max. Cr 20-26 Ni 34-44 Mo 3-<5.1 Cu 0.1-<3.1 N 0.4 Max. B 0.005 Max. Ce + La 0.4 Max. Added Nb 1 Max. Ti 0.5 Max. ______________________________________and the balance iron. The amount of nitrogen is not greater than that which can be retained in solution. When present niobium plus titanium ranges upward from a minimum which is sufficient to combine stoichiometrically with the amount of carbon present in excess of 0.025 w/o. In this composition the elements chromium, nickel, molybdenum and copper are balanced so that the value of Correlation I is equal to or less than 1.

Abstract: Disclosed is an amorphous alloy for a magnetic head, which is of the formula:(Co.sub.1-a-b-c Fe.sub.a Ru.sub.b TM.sub.c).sub.100-x-y Si.sub.x B.sub.ywherein TM is at least one of Ti, V, Cr, Mn, Ni, Zr, Nb, Mo, Hf, Ta and W, and, in atomic concentrations, 0.02.ltoreq.a.ltoreq.0.08, 0.07.ltoreq.b.ltoreq.0.2, c=0 or 0.01.ltoreq.c.ltoreq.0.1, 0.ltoreq.x.ltoreq.20 and 4.ltoreq.y.ltoreq.9, which is excellent in abrasion-resistance and simultaneously has high permeability.

Abstract: A hydrogen storage material is described which comprises an alloy of the composition of 25 to 30.9% by weight of Ti, about 10 to about 42% by weight of V and about 27.1 to about 65.1% by weight of Mn. The proviso is that more than 2 up to at most 2.2 atoms are present per titanium atom. Up to about 40%, preferably about 10 to about 40%, of the vanadium atoms can be replaced by iron atoms and up to about 10%, preferably about 3 to about 10%, can be replaced by aluminum atoms, but not more than about 40% of the vanadium atoms in total are replaced. Moreover, in place of titanium, a mixture can be used in which up to about 20% of the titanium fraction are replaced by Ca, Y, La, misch metal, or mixtures thereof. Up to about 0.2 atom of Cr per the titanium atom, up to about 0.1 atom of Ni per titanium atom and up to about 0.05 atom of Cu per titanium atom can also be present, but not more than about 0.1 atom of Ni plus Cu, these atoms replacing the same number of vanadium atoms.

Abstract: Manganese-iron base and manganese-chromium-iron base austenitic alloys designed to have resistance to neutron irradiation induced swelling and low activation have the following compositions (in weight percent): 20 to 40 Mn; up to about 15 Cr; about 0.4 to about 3.0 Si; an austenite stabilizing element selected from C and N, alone or in combination with each other, and in an amount effective to substantially stabilize the austenite phase, but less than about 0.7 C, and less than about 0.3 N; up to about 2.5 V; up to about 0.1 P; up to about 0.01 B; up to about 3.0 Al; up to about 0.5 Ni; up to about 2.0 W; up to about 1.0 Ti; up to about 1.0 Ta; and with the remainder of the alloy being essentially iron.