Asahi Glass Company, Limited

Ebara Corporation

Hoden Seimitsu Kako Kenkyusho Co., Ltd.

Other

Institute of Technology Precision Electrical Discharge Work's

Hoden Meimitsu Kako Kenkyusho Co., Ltd.

Yasuhiko Endo

Tomio Sakai

Masahiko Sekimoto

Seiji Katsuoka

Junichiro Yoshioka

Yugang Guo

Shunjiro Watanabe

Shoichiro Adachi

Fumio Kuriyama

Tomohiro Morishita

Takashi Mimori

Kengo Takase

Yukiyasu Kang

Hideaki Nogami

Masaaki Kimura

Hiroshi Maeno

Hiroshi Ueda

Noriyuki Oda

Minoru Yamada

Tetsuo Takehara

Yasushi Ono

Satoshi Sakamoto

Yukio Fukatsu

Hisayuki Sakai

Motohiro Goto

Yutaka Murata

Tetsuo Kaji

Hiroshi Yugami

Saburou Shimada

Saburo Shimada

Stephen Strausser

Yukiyasu Kan

A magnetic film plating apparatus employs a dip method that allows relatively good escape of bubbles and does not require a wide footprint and, even when a ferromagnetic material is used for an anode, can form a magnetic film on a substrate surface while minimizing the influence of the anode on the uniformity of magnetic anisotropy in the magnetic film. The magnetic film plating apparatus includes a plating tank for holding a plating solution, an anode vertically disposed in the plating tank at a position to be immersed in the plating solution, a substrate holder for holding a substrate W and positioning the substrate W opposite the anode, and a magnetic field generator, disposed outside the plating tank, for generating a magnetic field around the substrate W held by the substrate holder and positioned opposite the anode.

Plating apparatus and plating method for forming magnetic film

Disclosed is a chromium-free rust-inhibitive surface treatment agent to form a siliceous film that rarely cracks or peels off and yields an excellent rust-inhibitive performance on zinc surfaces of a metal part. The chromium-free rust-inhibitive surface treatment agent is an alcoholic solution of alkoxysilane oligomer having weight-averaged molecular weight of 1,000 to 10,000, and 2.5 to 15% of silicon in molecules of the alkoxysilane oligomer has been replaced with titanium. To prepare partly titanium-replaced alkoxysilane oligomer, titanium compound, in which about a half of alkoxy groups in titanium tetraalkoxide has been chelated, is reacted with tetraalkoxysilane monomer or alkoxysilane oligomer in the alcoholic solution.

Chromium-free rust-inhibitive surface treatment agent for metal parts with zinc surfaces and metal parts with zinc surfaces coated with rust-inhibitive surface coated film

A plating method and a plating apparatus, which has a plurality of plating units, for plating a substrate. Each of the plating units includes a plating tank for containing a plating solution therein, a water cleaning tank, disposed adjacent to said plating tank for cleaning the substrate with water, a substrate holder for holding the substrate in a vertical orientation, a vertical displacing mechanism for vertically dipping the substrate holder and a substrate held thereby in the plating solution in the plating tank, and a lateral displacing mechanism or a back-and-forth displacing mechanism for moving the substrate holder while holding the substrate in a vertical orientation between the plating tank and the water cleaning tank. The plating unit also includes a loading/unloading station for loading and unloading the substrate, and a transfer device for transferring the substrate between the plating unit and the loading/unloading station.

Substrate holder, plating apparatus, and plating method

A plating apparatus and method bubbles generated at the plating surfaces easily removed and the uniformity of the thickness of the plated film within the plated surface can be improved. The plating apparatus has a cassette table for loading a cassette in which a substrate having a plating surface is contained. An aligner for aligning the substrate, a rinser-dryer for rinsing and drying the substrate, and a plating unit for plating the substrate are also provided. The plating unit includes a plating vessel containing a plating solution, and a holder holds the substrate to immerse the substrate in the plating solution in the plating vessel. The plating surface is exposed to a nozzle which ejects the plating solution toward the plating surface.

Apparatus and method for plating a substrate

Provided is a chromium-free metal surface treatment agent excellent in rust inhibitive performance which can be used in a surface treatment of metal products, in particular, galvanized metal products. The metal surface treatment agent consists essentially of a siliceous binder solution comprising water and/or alcohol as a solvent, and the concentration of the silica component is 8 to 25% by weight. In particular, a metal surface treatment agent containing an alcoholic solution of alkoxysilane oligomer having a weight averaged molecular weight of 1000 to 10000, which is obtained by hydrolyzed condensation polymerization of alkoxysilane, can suppress the occurrence of white rusting for a long time. It is preferred that 3 to 25 parts by weight of a dispersed nano-sized titanium dioxide powder having an average primary particle size of not more than 70 nm, per 100 parts by weight of the silica component be suspended in the siliceous binder solution. The rust inhibitive performance of the metal surface treatment agent can be further improved by using an alcohol-soluble polyvinyl butyral resin and by adding a silane coupling agent having a vinyl or epoxy group as a functional group, in combination with a dispersed nano-sized powder of titanium dioxide.

Chromium-free metal surface treatment agent

Provided is a chromium-free surface treatment method which imparts practical rust inhibitive performance to a metal product having a zinc surface to which it was difficult to impart rust inhibitive performance of practical level. A conversion-coated film of zinc phosphate etc. is formed on the zinc surface of the metal product as pretreatment, and the silica-based film is formed by applying a chromium-free surface treatment agent which uses alcohol or mixture of water and alcohol as a solvent to the conversion-coated film. As a result, when an aqueous surface treatment agent containing alcohol is applied, it is possible to suppress the formation of white rusting for 72 hours or longer in the salt spray test.

Chromium-free rust inhibitive treatment method for metal products having zinc surface and metal products treated thereby

Provided is a chromium-free rust inhibitive paint for metals which is obtained by mixing a flaky zinc powder into a water reducible binder solution containing a water reducible resin emulsion and a water soluble silane coupling agent. A thin film of a silane compound having a hydrophobic group is added to particle surfaces of the flaky zinc powder, whereby the flaky metallic zinc powder exhibits water repellent property. When a surface treatment agent which contains an alkoxysilane oligomer as an essential component is applied to the paint film of a rust inhibitive paint for metals, this extends the time until red rusting occurs on painted metal products to not less than twice and prevents white rusting and black rusting for a long time. Rust inhibitive performance is further improved by blending a nano-sized powder of titanium dioxide, polyvinyl butyral, a silane coupling agent, etc., with the surface treatment agent.

Chromium-free water reducible rust inhibitive paint for metals

A substrate holder holds a substrate while hermetically sealing an outer circumferential edge and a reverse side of the substrate and exposing a surface of the substrate. The substrate holder has a base and a cover having an opening defined therein and positioned to place the substrate between the base and the cover. An attracting mechanism couples the base and the cover to each other to hold the substrate between the base and the cover, with the surface of the substrate being exposed through the opening.

A chromium-free corrosion inhibiting coating composition, which does not utilize harmful chromium compounds and can be used for corrosion inhibition of a metal surface, comprising a slurry mixture in which coated aluminum fine powder treated with a hydrophilic coupling agent is suspended in an acidic phosphate bonding solution and which can be stored in a refrigerator, is disclosed. A titanium-coupling agent is preferable to use as the coupling agent, which treats a surface of the aluminum fine powder. In this aqueous chromium-free corrosion inhibiting coating composition, 25 to 40% by weight of the aluminum fine powder a surface of which is treated with the coupling agent is suspended in the acidic phosphate bonding solution.

Surface coated aluminum fine powder and aqueous chromium-free corrosion inhibiting coating composition including the same

It is an object of the present invention to provide a high-gloss, heat-resistant paint composition that can form a paint film having high gloss, hiding power, heat resistance and adhesion, a method for manufacturing the same, a method for applying a high-gloss, heat-resistant paint, and a high-gloss, heat-resistant paint film. The heat-resistant paint composition is prepared by combining inorganic pigment powder having hiding power and a binder solution chiefly consisting of an alcoholic solution of polysilicon alcoxide; the binder solution containing an effective amount of aluminum ingredient; the composition contains 8&tilde;50 wt. % of hydrophilic organic solvent having a boiling point of not less than 100&deg; C. and not more than 220&deg; C.; the average particle size of primary particles of the inorganic pigment powder dispersed in the binder solution being not more than 0.3 &mgr;m; and the solidified paint film obtained when the composition has been dried and baked contains not less than 60 vol. % of a vitreous matrix formed as the result of solidification of binder content.

HIGH-GLOSS, HEAT-RESISTANT PAINT COMPOSITION; A METHOD FOR MANUFACTURING THE HIGH-GLOSS, HEAT-RESISTANT PAINT; A METHOD FOR APPLYING THE HIGH-GLOSS, HEAT-RESISTANT PAINT; AND A HIGH-GLOSS, HEAT-RESISTANT PAINT FILM

A monolithic refractory powder mixture containing from 2 to 3 wt % of spheroidized refractory particles having a mean particle size of at most 30 .mu.m of at least one member selected from the group consisting of alumina cement, alumina, titania, bauxite, diaspore, mullite, aluminous shale, chamotte, pyrophyllite, sillimanite, andrewsite, silica rock, chromite, spinel, magnesia, zirconia, zircon, chromia, silicon nitride, aluminum nitride, silicon carbide, boron carbide, zirconium boride and titanium boride, and having a cone flow value of at least 180 mm when a refractory mixture having the powder mixture kneaded by an addition of 6 parts by weight of water per 100 parts by weight of the powder mixture, is cast into a cone-shaped mold with a dimension of 70 mm.o slashed.-100 mm.o slashed..times.60 mm and left to stand for 60 seconds without exerting vibration after removing the cone-shaped mold.

Monolithic refractory powder mixture

A ceramics binder mixture having from 4.3 to 7 parts by weight, as calculated as silica, of a silica-sol mixed to 100 parts by weight of a mixture comprising (1) from 25 to 60 parts by weight of cordierite aggregates prepared by melting and vitrifying a mixture of an approximate cordierite composition (2MgO.2Al.sub.2 O.sub.3.5%SiO.sub.2), followed by crystallization to cordierite, and having a particle size of from 0.1 to 1 mm, (2) from 6 to 17 parts by weight of a fine powder of silica having particle sizes of from 0.1 to 10 .mu.m, and (3) the rest being a powder composed mostly of cordierite particles and having particle sizes smaller than 0.1 mm, whereby the Na.sub.2 O content in the binder mixture excluding moisture is not higher than 0.3 wt %.

Ceramics binder mixture and binding method

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Yokohama, Japan

Yasuhiko Endo