Abstract: This austenitic stainless steel sheet contains, as a chemical composition, by mass %, C: 0.030% or less, Si: 1.0% or less, Mn: 1.5% or less, Cr: 15.0% or more and 20.0% or less, Ni: 6.5% or more and 9.0% or less, N: 0.030% or more and 0.150% or less, any one of Nb, V, and Ti or two or more thereof in total: 0.030% or more and 0.300% or less, Mo: 0% or more and 2.0% or less, Cu: 0% or more and 1.5% or less, Co: 0% or more and 1.0% or less, P: 0.10% or less, S: 0.010% or less, and Al: 0.10% or less, in which a remainder includes Fe and impurities, the average grain size is 5.0 ?m or less, and the non-recrystallization rate is more than 3% and 20% or less.

Abstract: To provide a titanium alloy with superior corrosion resistance. The titanium alloy, having ?- and ?-phases, containing: by mass %, Fe: 0.010 to 0.300%, Ru: 0.010 to 0.150%, Cr: 0 to 0.10%, Ni: 0 to 0.30%, Mo: 0 to 0.10%, Pt: 0 to 0.10%, Pd: 0 to 0.20%, Ir: 0 to 0.10%, Os: 0 to 0.10%, Rh: 0 to 0.10%, one type or two or more types of La, Ce, and Nd: 0 to 0.10% in total, one type or two or more types of Cu, Mn, Sn, and Zr: 0 to 0.20% in total, C: 0.10% or less, N: 0.05% or less, 0: 0.20% or less, H: 0.100% or less, with the balance made up of Ti and impurities, wherein an average A-value in Expression (1), which represents a composition ratio of elements contained in ?-phase crystal grains, is in a range of 0.550 to 2.000, is used.

Abstract: Provided is a stainless steel product having a chemical composition consisting of C: less than 0.05%, Si: 4.0 to 7.0%, Mn: 1.50% or less, P: 0.030% or less, S: 0.030% or less, Cr: 10.0 to 20.0%, Ni: 11.0 to 17.0%, Cu: 0.15 to 1.5%, Mo: 0.15 to 1.5%, Nb: 0.5 to 1.2%, Sol. Al: 0 to 0.10%, Mg: 0 to 0.01%, and balance Fe and impurities, wherein MgO.Al2O3 inclusions constitute an area fraction of 0.02% or less. This stainless steel product has excellent corrosion resistance to hot concentrated sulfuric acid of approximately 93 to 99% concentration, for example, and also is economically advantageous.

Abstract: Provided is a stainless steel product having a chemical composition consisting of C: less than 0.05%, Si: 4.0 to 7.0%, Mn: 1.50% or less, P: 0.030% or less, S: 0.030% or less, Cr: 10.0 to 20.0%, Ni: 11.0 to 17.0%, Cu: 0.15 to 1.5%, Mo: 0.15 to 1.5%, Nb: 0.5 to 1.2%, Sol. Al: 0 to 0.10%, Mg: 0 to 0.01%, and balance Fe and impurities, wherein MgO.Al2O3 inclusions constitute an area fraction of 0.02% or less. This stainless steel product has excellent corrosion resistance to hot concentrated sulfuric acid of approximately 93 to 99% concentration, for example, and also is economically advantageous.

Abstract: A duplex stainless steel is provided that has a chemical composition comprising, by mass %, C: 0.03% or less, Si: 1.0% or less, Mn: 1.0% or less, P: 0.04% or less, S: 0.01% or less, Cu: 0.1 to 1.0%, Ni: 5.0 to 7.5%, Cr: 22.0 to 26.0%, W: 6.0 to 12.0%, N: 0.20 to 0.32%, Mo: 0.01% or less, and a balance: Fe and impurities, in which a metal micro-structure contains, by area ratio, 0.40 to 0.60 of an ?-phase, with a balance being a ?-phase and 0.01 or less of other phases.

Abstract: To provide a titanium alloy having corrosion resistance that is as high as or higher than before, and high corrosion resistance in a bromine-ion-containing environment, the alloy being able to be manufactured at low cost. [Solution] Provided is a titanium alloy to be used in a bromine-ion-containing environment, the titanium alloy consisting of, in mass %, a platinum group element: greater than or equal to 0.01% and less than or equal to 0.10%, a rare earth element: greater than or equal to 0.001% and less than 0.02%, O: greater than or equal to 0% and less than 0.1%, and the balance: Ti and impurities. The titanium alloy may contain, instead of part of Ti, one or more selected from the group consisting of Ni, Co, Mo, V, Cr, and W. The platinum group element is desirably contained in, in mass %, greater than or equal to 0.01% and less than or equal to 0.05%. The rare earth element is desirably contained in, in mass %, greater than or equal to 0.001% and less than 0.02%.

Abstract: [Object] To provide a titanium alloy material containing a platinum group metal, the titanium alloy material being able to sufficiently suppress corrosion accompanying surface roughening. [Solution] Provided is a titanium alloy material including a platinum group metal. When an average value of intensity of background signals in surface mapping analysis using an EPMA surface analysis apparatus is N and N+3N1/2 is maximum intensity of the background signal of an Fe or S characteristic X-ray, an area ratio at which a signal of an Fe or S characteristic X-ray exceeding the maximum intensity is obtained is 0.1% or less.

Abstract: Embodiments of the present invention provide a magnetic slider of which terminals have a sufficiently large process margin for the laser condition in the SBB process. According to one embodiment, a magnetic slider comprises: a read element and a write element; plural wiring lines which are connected to the read element and the write element; a protective film which covers the read element, the write element and the plural-wiring lines; plural slider pads formed on the protective film; and plural studs which respectively connect the slider pads and the wiring lines and are covered by the protective film, wherein each of the slider pads comprises a chromium film, a nickel iron film and a gold film, the nickel iron film is formed between the chromium film and the gold film, and the chromium film is formed between the nickel iron film and one of the studs and is in contact with the protective film.

Abstract: Embodiments of the present invention provide a magnetic slider of which terminals have a sufficiently large process margin for the laser condition in the SBB process. According to one embodiment, a magnetic slider comprises: a read element and a write element; plural wiring lines which are connected to the read element and the write element; a protective film which covers the read element, the write element and the plural-wiring lines; plural slider pads formed on the protective film; and plural studs which respectively connect the slider pads and the wiring lines and are covered by the protective film, wherein each of the slider pads comprises a chromium film, a nickel iron film and a gold film, the nickel iron film is formed between the chromium film and the gold film, and the chromium film is formed between the nickel iron film and one of the studs and is in contact with the protective film.

Abstract: Magnetoresistive and spin valve heads have a layered structure. Common to each of the layered structures of these heads is the combination of a soft-magnetic layer of essentially NiFe near a spacer layer of essentially Ta, which is used for insuring (111) crystal orientation of the NiFe layer. An isolate layer is interposed between the spacer layer and the soft-magnetic layer to prevent a diffusion boundary from being created at the interface of these layers which tends to degrade the soft-magnetic property of the NiFe layer, especially when the thickness of the soft-magnetic layer is 10 and nm or less.

Abstract: A magnetoresistive head in which Barkhausen noise is substantially suppressed and a variation in reproduction is minimized, and a magnetic disk apparatus using the same magnetic head have been provided. The feature of the magnetic head and the magnetic disk apparatus of the invention resides in the provision of the longitudinal bias layer which comprises a hard magnetic thin film formed on an underlayer made of either of a ferromagnetic thin film having a body-centered cubic lattice crystal structure formed of body-centered cells, an amorphous ferromagnetic thin film or antiferromagnetic thin film having a body-centered cubic lattice crystal structure formed of body-centered cells.

Abstract: A magnetoresistive head in which Barkhausen noise is substantially suppressed and a variation in reproduction is minimized, and a magnetic disk apparatus using the same magnetic head have been provided. The feature of the magnetic head and the magnetic disk apparatus of the invention resides in the provision of a longitudinal bias layer which comprises a hard magnetic thin film formed on an underlayer made of either a ferromagnetic thin film having a body-centered cubic lattice crystal structure, or an amorphous ferromagnetic thin film or antiferromagnetic thin film having a body-centered cubic lattice crystal structure.

Abstract: Magnetoresistive and spin valve heads have a layered structure. Common to each of the layered structures of these heads is the combination of a soft-magnetic layer of essentially NiFe near a spacer layer of essentially Ta, which is used for insuring (111) crystal orientation of the NiFe layer. An isolate layer is interposed between the spacer layer and the soft-magnetic layer to prevent a diffusion boundary from being created at the interface of these layers which tends to degrade the soft-magnetic property of the NiFe layer, especially when the thickness of the soft-magnetic layer is 10 and nm or less.

Abstract: A magnetoresistive head in which Barkhausen noise is substantially suppressed and a variation in reproduction is minimized, and a magnetic disk apparatus using the same magnetic head have been provided. The feature of the magnetic head and the magnetic disk apparatus of the invention resides in the provision of a longitudinal bias layer which comprises a hard magnetic thin film formed on an underlayer made of either a ferromagnetic thin film having a body-centered cubic lattice crystal structure, or an amorphous ferromagnetic thin film or antiferromagnetic thin film having a body-centered cubic lattice crystal structure.

Abstract: A magnetic head having a magnetoresistive head having a spin valve structure in which a composite magnetic layer of a rotatable magnetizing direction layer and oxide or the like is used for a lower shielding layer and/or an upper shielding layer and a magnetic disk apparatus using such a head are disclosed. According to the invention, a magnetic head having a head of a magnetoresistance effect type generating a high output with low noises and a magnetic disk apparatus having a large quantity with high recording density can be realized.

Abstract: To improve the water resisting secondary adhesion of paint films to zinc phosphate conversion coatings on aluminum, the initially formed conversion coating is treated by spraying with a second liquid treatment composition that either is itself a liquid composition capable of forming a zinc phosphate conver- sion coating on aluminum or is made by diluting such a conversion coating forming composition.

Abstract: An apparatus for making a silicon single crystal large in diameter dependently on the Czochralski process, wherein appropriate openings (11) are provided on the warmth keeping over (10) so as to prevent an undesirable influence caused by atmospheric gas. The major elements of the apparatus are that the sum of areas of the openings (11) is larger than the area of gap (18) formed between the lower end of the warmth keeping cover (10) and the level of silicon solution, and that the warmth keeping cover and the heat insulating member (12) are composed of sheet metal.

Abstract: A silicon single crystal manufacturing apparatus whereby a silicon single crystal having a large diameter and stable composition is pulled at a high rate in accordance with the Czochralski method which rotates a crucible. The apparatus features that a partition member is of a crucible type, that the partition member above the surface of molten silicon has a thickness which is not less than 3 mm and not greater than 80% of the thickness of the partition member below the molten silicon surface, that the bottom portion of the partition member is closely fixed to the bottom portion of the crucible and that the partition member is supported on a cylindrical quartz member.

Abstract: In a silicon single crystal manufacturing apparatus of the type which continuously feeds starting material, a metallic heat keeping plate is arranged to cover a partition member dividing molten silicon into a single crystal growing section and a material melting section within a quartz crucible and an upper side of the material melting section. The metallic heat keeping plate is provided for the purpose of preventing the occurrence of solidification of the molten silicon on the inner side of the partition member and preventing excessive cooling of a silicon single crystal. The metallic heat keeping plate has a thickness of 3 mm or less and its material is tantalum or molybdenum. Further, the heat keeping plate includes a straight body portion formed with a plurality of openings for adjusting the temperature of the single crystal.

Abstract: A silicon single crystal manufacturing apparatus which pulls a large-diameter silicon single crystal with improved yield and efficiency according to the rotary CZ method.As a means of preventing the solidification of molten silicon in the vicinity of a partition member, that is, one of factors which deteriorate the yield and efficiency, a heat shielding member having a predetermined position and shielding width is arranged to face a meniscus position of molten silicon thereby shielding the heat radiation from the meniscus portion.Its shape is a cylindrical shape, truncated-cone shape or a shape formed at its cylindrical bottom with a flange having a central opening.Its material primarily consists of a metal such as molybdenum or tantalum or an electric resistance heater.