Abstract: The present invention, which is aimed at providing a method for manufacturing a clad material that can be used for the anode cases and cathode cases of button-type microbatteries and other miniature electronic devices requiring the use of comparatively thin, drawable sheets, allows the difference between r values, or Lankford values (which characterize the plastic anisotropy between the rolling/bonding direction of a clad material and a direction at a prescribed angle to the rolling/bonding direction) to be reduced by preforming cold rolling at a reduction of 30% or lower in addition to performing a conventional method for manufacturing a clad material, making it possible to substantially enhance the mechanical strength of the clad material and to mass-produce clad materials that have low reduction anisotropy.

Abstract: In a process for surface-treating a plurality of works, the surfaces of the works are treated in a treating chamber, while being rotated about their axes, or about a rotational axis, or about their axes and about the rotational axis. The works are supported in a support member which may be comprised of an upper cage and a lower cage including a large number of compartments, so that the cages are openable and closable in a lengthwise direction. The support member may be comprised of plate-like elements openably and closably foldable in a lengthwise direction, so that a plurality of narrow sections each having a length corresponding to an inside diameter of a work are defined in opened states of the plate-like elements. The works may be supported in a holder which is formed by coiling a wire at distances in such a manner that it is formed as a spring-like tubular structure, so that the works can be accommodated in the tubular structure.

Abstract: With the deposited-film forming apparatus according to the first embodiment of the present invention, the distance between the tubular barrel and the evaporating section can be varied, unlike the prior art deposited-film forming apparatus and hence, the efficient formation of the deposited film on the surface of each of the work pieces accommodated in the tubular barrel and the inhibition of the softening of the formed film can be achieved simultaneously. Therefore, it is possible to inhibit the damaging of the deposited film formed on the surface of each of the work pieces and the production of projections on the deposited film, and to form a deposited film at a high quality in respect of a corrosion resistance and the like and at low cost.

Abstract: In a process for surface-treating a plurality of works, the surfaces of the works are treated in a treating chamber, while being rotated about their axes, or about a rotational axis, or about their axes and about the rotational axis. The works are supported in a support member which may be comprised of an upper cage and a lower cage including a large number of compartments, so that the cages are openable and closable in a lengthwise direction. The support member may be comprised of plate-like elements openably and closably foldable in a lengthwise direction, so that a plurality of narrow sections each having a length corresponding to an inside diameter of a work are defined in opened states of the plate-like elements. The works may be supported in a holder which is formed by coiling a wire at distances in such a manner that it is formed as a spring-like tubular structure, so that the works can be accommodated in the tubular structure.

Abstract: A powder pressing apparatus comprises a die having a through hole, an upper punch and a lower punch. At least one of the upper and lower punches has a punching surface having an edge portion provided with a projection. The projection has a tip chamfered by a width not greater than 0.5 mm. The punching surface has a slope having a surface roughness Ra not greater than 1.0 &mgr;m. A rare-earth alloy powder is fed into a cavity formed in the through hole of the die. The rare-earth alloy powder in the cavity is oriented by magnetic field, and pressed by using the upper and lower punches. The upper punch and the lower punch are brought closest to each other at a minimum distance not smaller than 1.7 mm during the pressing. An obtained compact is used for manufacture of a sintered body and a voice coil motor.

Abstract: An Fe—B—R based permanent magnet has a metal oxide film having a thickness of 0.01 &mgr;m to 1 &mgr;m on its surface with a metal film interposed therebetween. Thus, the film is excellent in adhesion to the surface of the magnet. Even if the permanent magnet is left to stand under high-temperature and high-humidity of a temperature of 80° C. and a relative humidity of 90% for a long period of time, the magnetic characteristic of the magnet cannot be degraded. The magnet has a thermal shock resistance enough to resist even a heat cycle for a long period of time in a temperature range of −40° C. to 85° C., and can exhibit a stable high magnetic characteristic. Therefore, it is possible to produce an Fe—B—R based permanent magnet having a corrosion-resistant film free from hexa-valent chromium.

Abstract: The present invention provides a method for using a rubber product or a rubber member in which at least one portion of the surface of the rubber product or the rubber member to be used in clean environments is allowed to swell by using a solvent, and then used. After at least one portion of the surface of the rubber product or the rubber member has been subjected to swelling by the solvent, it is used to handle electronic parts or the elements thereof; thus, a manufacturing method for electronic parts for manufacturing the electronic parts in clean environments is provided.

Abstract: An inventive material alloy for a nanocomposite magnet is represented by a general formula Fe100−x−yRxBy, Fe100−x−y−zRxByCoz, Fe100−x−y−uRxByMu or Fe100−x−y−z−uRxByCozMu. R is a rare-earth element. 90 atomic percent or more of R is Pr and/or Nd, while equal to or larger than 0 atomic percent and less than 10 atomic percent of R is another lanthanoid and/or Y. M is at least one element selected from the group consisting of Al, Si, Ti, V, Cr, Mn, Ni, Cu, Ga, Zr, Nb, Mo, Hf, Ta, W, Pt, Pb, Au and Ag. The molar fractions x, y, z and u meet the inequalities of 2≦x≦6, 16≦y≦20, 0.2≦z≦7 and 0.01≦u≦7, respectively. The alloy includes a metastable phase Z represented by at least one of a plurality of Bragg reflection peaks observable by X-ray diffraction analysis. The at least one peak corresponds to a lattice spacing of 0.179 nm±0.005 nm.

Abstract: A thin-film magnetic head supporting structure includes: an FeAlSi alloy film; a ceramic substrate used for structural support of the FeAlSi alloy film; and an intermediate multilayer structure disposed between the FeAlSi alloy film and the ceramic substrate. The intermediate multilayer structure includes a Cr film and an Fe film, which are stacked in this order over the ceramic substrate.

Abstract: In a rare earth metal-based alloy powder supplying apparatus, a rare earth metal-based alloy powder is supplied from a feeder box having an opening in its bottom surface into a cavity by moving the feeder box to above the cavity. The apparatus includes a bar-shaped member which is moved horizontally and in parallel in the bottom of the feeder box. A plurality of the bar-shaped members may be provided horizontally at distances. The apparatus further includes a powder replenishing device for sequentially replenishing the alloy powder into the feeder box in an amount corresponding to a decrement in amount resulting from the supplying of the alloy powder from the feeder box to the cavity, an inert gas supply device for filling an inert gas into said powder feeder box, and a plate member made of a fluorine-contained resin and mounted on the bottom surface of the feeder box.

Abstract: An MRI-use magnetic field generator structured such that there is no loss of magnetic field uniformity, temperature fluctuation is reduced and thermal efficiency enhanced, and the temperature of the permanent magnets can be controlled to high precision. With this invention, temperature control heaters are embedded in the base yokes of magnetic path formation members, and as a result of this structure, when the temperature control heaters are heated by a temperature regulator according to the temperature detected by a temperature sensor, the permanent magnets disposed in the vicinity of the base yokes are heated efficiently, so control follow-up is excellent. Furthermore, because the temperature control heaters are embedded inside the base yokes, and the heat generated by the heaters is conducted through the base yokes and reaches the permanent magnets directly, the heat is not diffused to the outside and lost, affording extremely efficient thermal control.

Abstract: The purpose of the present invention is to improve releasability from the jig of a method of producing a minute metal ball by heating and melting and then cooling a metal piece of specific dimensions and further, to present a metal ball with very good dimensional accuracy and sphericity, even though diameter is minute. By means of the above-mentioned method, very good releasability between the metal ball and jig after melting and cooling is obtained and long-term use of the tool becomes possible by placing a metal piece on a jig with a layer of fine powder of BN, AlN or C having low wettability with the metal piece in between, or by making a layer of fine powder adhere to the surface of the metal piece and then placing this metal piece on the jig or shaking and arranging individual metal pieces in holes in the same.

Abstract: A method for manufacturing a permanent magnet by fabricating rapidly cooled alloy thin strip of amorphous composition which has good tenacity, simple working properties and an average thickness of 10 &mgr;m˜200 &mgr;m, from a molten alloy of a specific composition containing 6 at % or less of rare-earth element and 15 at %˜30 at % of boron, by means of specific rapid cooling conditions, and then subjecting this rapidly cooled alloy thin strip, after cutting or punching to a prescribed shape, to crystallization heat treatment such that the average crystal grain size thereof becomes 10 nm˜50 nm, and by layering together two or more of these thin permanent magnets and bonding and uniting the layered thin strips by means of an inorganic adhesive material or a resin, it is possible readily to provide a high-performance layered permanent magnet having a desired thickness and a prescribed shape, without using a method involving crushing and bonded magnet forming processes and without needing to car

Abstract: An efficient method for producing a high-precision, very small metal ball, such as a Cu ball having an outer diameter not greater than 1 mm, comprising the steps of: cutting metal wire having a diameter not greater than 0.3 mm into a predetermined length; melting and solidifying the metal wires to form starting metal pieces (11); charging a plating apparatus having a double-tank structure comprising an outer splash-proofing tank (8) and an inner plating tank (3), comprising a cathode (4) located at a horizontally turning peripheral portion and an anode centrally located inside the tank; turning the inner tank (3) in a forward and reverse direction while plating solution is discharged to the outer tank (8) due to a high speed rotation of the inner tank at 50 to 800 rpm; and electroplating the starting material to form a film of predetermined thickness without generating aggregation of plated product.

Abstract: A process for surface-treating a plurality of works which includes the step of surface-treating the works in a treating chamber, while rotating the works about their axes in spaced apart states, wherein the surface treatment is a vapor deposition on a sintered article and the support member includes plate-like elements openably and closably foldable in a lengthwise direction, the plate-like elements defining a plurality of narrow sections each having a length in opened states corresponding to an inside diameter of a work. The support member may also include an upper cage and a lower cage which are openable and closable in a lengthwise direction.

Abstract: The present invention provides an Fe—B—R based permanent magnet, which has a chemical conversion coating film formed on its surface with an aluminum film interposed therebetween, the chemical conversion coating film containing at least one of titanium and zirconium, phosphorus, oxygen and fluorine as constituting elements, and a process for producing such an Fe—B—R based permanent magnet. In the permanent magnet, the chemical conversion coating film is adhered firmly to the magnet with the aluminum film interposed therebetween and hence, the magnet is excellent in corrosion resistance. Even if the magnet is left to stand for a long time under high-temperature and high-humidity conditions of a temperature of 80° C. and a relative humidity of 90%, the magnet exhibits a stable high magnetic characteristic which cannot deteriorate. Moreover, the film is free from hexa-valent chromium.

Abstract: The thin film magnetic head substrate of this invention includes an alumina titanium carbide base plate and an aluminum oxide layer formed on the alumina titanium carbide base plate. The alumina titanium carbide base plate has a surface modified layer in a surface portion facing the aluminum oxide layer, and the surface modified layer includes aluminum titanate.

Abstract: A magnetism applying circuit, which has a construction in which the different polarity ends of a pair of permanent magnets are connected to the respective ends of a yoke having a V-letter shape, is attached to a pipe so as to place the permanent magnets close to the pipe. Therefore, a magnetic fluid treatment apparatus which can reduce magnetic field leakage is formed.

Abstract: An object of the present invention is to provide an Fe—B—R permanent magnet that exhibits stabilized high magnetic properties, wear resistance, electrical insulating performance, and corrosion resistance and shows minimized deterioration from the initial magnetic properties when exposed for an extended time to atmospheric conditions of a temperature of 80° C. and relative humidity of 90%, by providing a coating film having outstanding adhesion with the Fe—B—R permanent magnet and improved wear resistance and corrosion resistance. After cleaning the surface of the permanent magnet body by ion sputtering or the like, an Al or Ti coating film is formed on the surface of that magnet body by a vapor film-forming method such as ion plating, and then an aluminum oxide coating film is formed by a vapor film-forming method such as ion plating while introducing either simple O2 gas or a rare gas containing O2.

Abstract: An object of the present invention is to provide an MRI magnetic field generator with which the magnetic field uniformity within the imaging field of view of the air gap can be adjusted easily and safely, without having to detach the gradient coils, after the MRI magnetic field generator has been installed with gradient coils already mounted on a pair of magnetic pole pieces. After the holder disk 13 has been placed on and fastened to the base disk 11, the magnetic material pellets or permanent magnet pellets for adjusting the magnetic field uniformity are inserted into the required pits disposed in a specific pattern, and if needed, spacers are placed in the gaps between [the pellets] and the cover disk 14 to position everything, after which the cover disk 14 is screwed on to hold everything together. The resulting shim holder 10 is aligned with and fastened to the gradient coil 6 or its support member.