摘要:
A plasma processing apparatus comprising: a vacuum container; an evacuation means for keeping the interior of the vacuum container at a pressure not higher than atmospheric pressure; a substrate support device for supporting a substrate to be subjected to plasma processing; an electrode for generating plasma in cooperation with the substrate support; a voltage supply for applying a voltage to the electrode; a gas introducing system for introducing a gaseous material into a space where the plasma is produced; a surrounding member for enclosing the space above the substrate support, and a drive for relatively moving the surrounding member to space an end of the surrounding member proximate from the substrate from at least one of the substrate support and the substrate supported thereon by a distance which is short enough to suppress plasma leakage during the plasma processing and to position the end of the surrounding member away from said at least one of the substrate support and the substrate thereon for charging and discharging of the substrate.
摘要:
A film forming method by plasma sputtering is provided to attain a composite film on a substrate. A target plate having metal materials in a different pattern is prepared in opposition to the substrate. A plasma is created by a planar magnetron sputtering electrode structure. The plasma is shifted magnetically on the target plate by at least three magnetically coupled magnetic poles to deposit the materials into a film with a uniform thickness and a desired composition on the substrate.
摘要:
A base plate for magnetic recording disc is produced by coating thin metal layers containing no impurities for forming defects by an anodizing treatment on one or both sides of a discoid substrate made of a metal such as aluminum or an aluminum alloy or from a plastic by a dry process, and anodizing the thin metal layers so as to form anodized film from the surfaces of the thin metal layers to a certain depth while the portions contacting to the substrate are retained not anodized.
摘要:
When an amine compound having at least two polyolefin glycol chains in one molecule is used as a stabilizer, and an alkylene diamine compound, at least one hydrogen atom in the respective amino groups thereof being substituted by CH.sub.2 COOX (wherein X is H or Na) and another hydrogen atom in the respective amino group thereof being substituted by CH.sub.2 OH, is used as a complexing agent for cupric ions and a nitrogen-containing cyclic compound is used as a complexing agent for cuprous ions in an electroless copper plating solution comprising water, a water-soluble copper salt, a complexing agent for cupric ions, a reducing agent, a pH-controlling agent and a stabilizer, or an electroless copper plating solution comprising water, a water-soluble copper salt, a complexing agent for cupric ions, a reducing agent, a pH-controlling agent, a stabilizer and a complexing agent for cuprous ions, the plating rate of the electroless copper plating solution, mechanical strength of plating film, and stability of the plating solution are improved.
摘要:
Disclosed is a magnetic recording medium in which an underlayer formed below a magnetic medium, in which a signal is written, is composed of a nickel alloy comprising 0.05 to 10 atom % of tungsten and 14 to 30 atom % of phosphorus. In this magnetic recording medium, the temperature for formation of magnetic medium and the temperature for formation of a protective film can be elevated over the levels adopted in the conventional techniques. Therefore, the magnetic characteristics and abrasion resistance can be improved. Furthermore, the magnetic recording medium is excellent in the mechanical strength and corrosion resistance. Accordingly, the reliability of the magnetic medium can be highly improved.
摘要:
A hard-disk drive. The hard-disk drive includes a disk enclosure, a magnetic-recording disk accommodated in the disk enclosure, and a diffusion suppressing film. The diffusion suppressing film divides the space in the disk enclosure into a first space where the magnetic-recording disk is disposed and a second space for retaining a lubricant. The diffusion suppressing film also suppresses diffusion of the lubricant from the second space to the first space.
摘要:
A substrate for a magnetic disc, which comprises a crystallized glass consisting essentially of an amorphous glass continuous phase and crystal particles dispersed in the continuous phase, the substrate having fine projections of the crystal particles on the surface thereof, a method of producing the substrate, the magnetic disc using the substrate, and a method of producing the magnetic disc are provided. The crystallized glass is made from a glass material of a Li.sub.2 O--SiO.sub.2, Li.sub.2 O--Al.sub.2 O.sub.3 --SiO.sub.2, Li.sub.2 O--MgO--Al.sub.2 O.sub.3 --SiO.sub.2, MgO--Al.sub.2 O.sub.3 --SiO.sub.2, Na.sub.2 O--Al.sub.2 O.sub.3 --SiO .sub.2 or BaO--Al.sub.2 O.sub.3 --SiO.sub.2 system, and the crystal particles have one or more compositions selected from Li.sub.2 O--SiO.sub.2, Li.sub.2 O.2SiO.sub.2, Li.sub.2 O.Al.sub.2 O.sub.3.2Si.sub.2, Li.sub.2 O.Al.sub.2 O.sub.3 4SiO.sub.2, SiO.sub.2 and 2MgO--2Al.sub.2 O.sub.3.5SiO.sub.2, and an average particle size of 0.01 to 3.0 .mu.m, and are projected at a density of 10.sup.2 to 10.sup.6 / mm.sup.2 and at an average height of 0.005 to 0.2 .mu.m on the surface of the substrate, the total surface area of the projections of crystal particles occupying at most 30% of the unit surface area of the substrate. The projections are made by chemical etching with an aqueous solution of hydrofluoric acid, physical etching with sputtering under vacuum or ion-milling, or mechanical etching with sand blasting. The magnetic disc comprises the crystallized glass substrate, a chromium or chromium alloy undercoat film, thin magnetic film, protective carbon film and lubricant film.
摘要翻译:一种用于磁盘的基板,其包括基本上由无定形玻璃连续相组成的结晶玻璃和分散在连续相中的晶体颗粒,所述基板在其表面上具有晶体颗粒的微小突起,制造基板的方法, 提供使用该基板的磁盘及其制造方法。 结晶玻璃由Li2O-SiO2,Li2O-Al2O3-SiO2,Li2O-MgO-Al2O3-SiO2,MgO-Al2O3-SiO2,Na2O-Al2O3-SiO2或BaO-Al2O3-SiO2体系的玻璃材料制成, 所述结晶粒子具有选自Li 2 O-SiO 2,Li 2 O 2·SiO 2,Li 2 O·Al 2 O 3·2Si 2,Li 2 O·Al 2 O 34·SiO 2,SiO 2和2MgO·2Al 2 O 3·5SiO 2中的一种以上的组成,平均粒径为0.01〜3.0μm, 投影在基板表面上的密度为102〜106 / mm 2,平均高度为0.005〜0.2μm,晶体颗粒的突起的总表面积占据了单体表面积的至多30% 基质。 通过用氢氟酸的水溶液进行化学蚀刻,在真空下进行溅射物理蚀刻或离子研磨或通过喷砂机械蚀刻来进行突起。 磁盘包括结晶玻璃基板,铬或铬合金底涂层,薄磁膜,保护性碳膜和润滑膜。
摘要:
A substrate for a magnetic disc, which comprises a crystallized glass consisting essentially of an amorphous glass continuous phase and crystal particles dispersed in the continuous phase, the substrate having fine projections of the crystal particles on the surface thereof, a method of producing the substrate, the magnetic disc using the substrate, and a method of producing the magnetic disc are provided. The crystallized glass is made from a glass material of a Li.sub.2 O-SiO.sub.2, Li.sub.2 O-Al.sub.2 O.sub.3 -SiO.sub.2, Li.sub.2 O-MgO-Al.sub.2 O.sub.3 -SiO.sub.2, MgO-Al.sub.2 O.sub.3 -SiO.sub.2, Na.sub.2 O-Al.sub.2 O.sub.3 -SiO.sub.2 or BaO-Al.sub.2 O.sub.3 -SiO.sub.2 system, and the crystal particles have one or more compositions selected from Li.sub.2 O.multidot.SiO.sub.2, Li.sub.2 O.multidot.2SiO.sub.2, Li.sub.2 O.multidot.Al.sub.2 O.sub.3 .multidot.2SiO.sub.2, Li.sub.2 O.multidot.Al.sub.2 O.sub.3 .multidot.4SiO.sub.2, SiO.sub.2 and 2MgO.multidot.2Al.sub.2 O.sub.3 .multidot.5SiO.sub.2, and an average particle size of 0.01 to 3.0 .mu.m, and are projected at a density of 10.sup.2 to 10.sup.6 /mm.sup.2 and at an average height of 0.005 to 0.2 .mu.m on the surface of the substrate, the total surface area of the projections of crystal particles occupying at most 30% of the unit surface area of the substrate. The projections are made by chemical etching with an aqueous solution of hydrofluoric acid, physical etching with sputtering under vacuum or ion-milling, or mechanical etching with sand blasting. The magnetic disc comprises the crystallized glass substrate, a chromium or chromium alloy undercoat film, thin magnetic film, protective carbon film and lubricant film.
摘要翻译:一种用于磁盘的基板,其包括基本上由无定形玻璃连续相组成的结晶玻璃和分散在连续相中的晶体颗粒,所述基板在其表面上具有晶体颗粒的微小突起,制造基板的方法, 提供使用该基板的磁盘及其制造方法。 结晶玻璃由Li2O-SiO2,Li2O-Al2O3-SiO2,Li2O-MgO-Al2O3-SiO2,MgO-Al2O3-SiO2,Na2O-Al2O3-SiO2或BaO-Al2O3-SiO2体系的玻璃材料制成, 晶体颗粒具有选自Li 2 O x SiO 2,Li 2 O x 2 SiO 2,Li 2 O x Al 2 O 3 xSiSiO 2,Li 2 O x Al 2 O 3 x 4 SiO 2,SiO 2和2MgO 2 Al 2 O x xSiSiO 2中的一种或多种组合物,平均粒径为0.01〜3.0μm,以102〜106 / mm 2的密度投影,平均高度 在基板表面上为0.005〜0.2μm,晶体颗粒的突起的总表面积占基板的单位面积的至多30%。 通过用氢氟酸的水溶液进行化学蚀刻,在真空下进行溅射物理蚀刻或离子研磨或通过喷砂机械蚀刻来进行突起。 磁盘包括结晶玻璃基板,铬或铬合金底涂层,薄磁膜,保护性碳膜和润滑膜。
摘要:
A hard-disk drive. The hard-disk drive includes a disk enclosure, a magnetic-recording disk accommodated in the disk enclosure, and a diffusion suppressing film. The diffusion suppressing film divides the space in the disk enclosure into a first space where the magnetic-recording disk is disposed and a second space for retaining a lubricant. The diffusion suppressing film also suppresses diffusion of the lubricant from the second space to the first space.
摘要:
Embodiments of the invention eliminate, in an elemental analysis made of fine particles trapped using a conventional analytical filter, a hindrance to correct identification of elements of the fine particles as an original object of measurement that would otherwise cause the X-ray analyzer to measure elements of a filter base in addition to those of the fine particles. In one embodiment, an analytical filter includes a filter base and a metallic coating film. The filter base made of a resin has a plurality of filtering holes, each having a hole diameter ranging between about 100 nm and 1000 nm. The metallic coating film is formed on one face of the filter base through ion sputtering of gold (Au). The metallic coating film is so thick that an electron beam from an X-ray analyzer does not penetrate therethrough and the filtering holes are not plugged up. The metallic coating film is at least about 40 nm thick and is preferably about 40 nm to 100 nm thick.