Nisshin Steel Co., Ltd.

Tsuguyasu Yoshii

Yasushi Fukui

Katsuhiko Masaki

Kazunari Nakamoto

Tadaaki Miono

Toshiro Adachi

Hideo Miyake

Kenji Imae

Masahiko Soda

Atsushi Fujii

Takashi Okuyama

Atsushi Mizuno

Isamu Yoshimura

Suenori Mori

A steel strip is cleaned by sputtering-etching with ion beams of argon. By the sputtering-etching, an oxide film of easily oxidable elements such as chromium and silicon is removed. The cleaned steel strip is hot-dipped.

Method and apparatus for hot-dipping steel strip

A titanium oxide film consists of a mixture of titanium monoxide (TiO), titanium dioxide (TiO.sub.2), titanium trioxide (Ti.sub.2 O.sub.3), titanium pentoxide (Ti.sub.3 O.sub.5) and other titanium oxides which are expressed as Ti.sub.n O.sub.2n-1 is an integer from 4 to 10. Average content of oxygen in the film is from 51 to 59 atom percent.

Titanium oxide film

A multilayer metal-coated steel sheet comprising as a first layer a Zr coating layer formed on the surface of a steel sheet, and as a second layer an Al coating layer formed on said first layer. As another embodiment, also disclosed is a multilayer metal-coated steel sheet comprising as a first layer a Zr coating layer formed on the surface of a steel sheet, as a second layer an Al-Zr alloy coating layer containing Zr in an amount of 1% by weight to 50% by weight, formed on said first layer, and as a third layer an Al coating layer formed on said second layer. The multilayer metal-coated steel sheet of the present invention has an improved corrosion resistance, heat resistance and formability.

Multilayer metal-coated steel sheet

Material for expanded graphite gasket comprising an expanded graphite sheet and a stainless steel sheet provided on its surface with a coating layer of a predetermined metal, the expanded graphite sheet and the stainless steel sheet being adhered to each other by use of adhesive.

Material for expanded graphite gasket

An austenitic stainless steel having excellent corrosion resistance in hot aqueous medium is disclosed. The steel essentially consists by weight of

Austenitic stainless steel having improved corrosion resistance in hot

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Kishiwada, Japan

Tsuguyasu Yoshii