Nippon Steel Corporation

Nippon Kinzoku Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Keiichi Ohmura

Mikio Yamanaka

Toshiyuki Yashiro

Shinichi Matsumoto

Toshihiro Takada

Akihiko Kasahara

Fumio Fudanoki

Masuhiro Fukaya

Hidehiko Sumitomo

Shinji Shibata

Nobuhiro Fujita

Yuichi Kato

Masaki Izumi

Masaaki Kobayashi

Yasushi Nakamura

Masayuki Kasuya

Hiroyuki Tanaka

Hikaru Aoyagi

Shinzi Shibata

Yoshio Nishizawa

Eiji Sato

Shigetoshi Sugimoto

Wataru Murata

Tomoyuki Sugino

Kenji Hirashima

Hisashi Baba

Hitoshi Ota

Motohiko Arakawa

Miko Yamanaka

Hiroo Wakiyama

Masayuki Tendoh

Jun Nakatuka

Jun Araki

Akira Imamura

Ryoichi Hisatomi

Ferrite system stainless steel having excellent nacl-induced hot

Highly heat-resistant metallic carrier for an automobile catalyst

High-strength stainless steel foil for corrugating and process for

Fe-Cr-Al alloy steel sheet and process for producing the same

A heat-resistant stainless steel foil for a catalyst-carrier of combustion exhaust gas purifiers, consisting essentially in weight percentage of:

Heat-resistant stainless steel foil for catalyst-carrier of combustion

An exhaust gas purifying catalyst of this invention comprises a heat resistance stainless steel catalyst support, an oxide film containing zirconium oxide formed on the heat resistance stainless steel catalyst support, an activated alumina catalyst carrier layer formed on the oxide film, and at least one metal catalyst loaded in the activated alumina catalyst carrier layer. Thus, the activated alumina catalyst carrier layer's come-off from the catalyst support and the oxidation of the catalyst support are suppressed at the same time, and the conversions of the hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOx) are also improved.

Exhaust gas purifying catalyst

A rolled high Al stainless steel foil for use as a substrate for a catalyst carrier, which comprises more than 12 wt % up to 20 wt % of Al, from 5 to 25 wt % of Cr, from 0.05 to 2 wt %, in total, of at least one element selected from the group consisting of Ti, Nb, Zr, and Hf, and the remainder substantially consisting of Fe and unavoidable elements. The stainless steel foil has an excellent resistance to oxidation in an engine exhaust gas at a temperature of 1150.degree. C. or higher, can be obtained by foil-rolling, and enables a reduction of the exhaust back-pressure and weight of automobile catalyst converters.

Rolled high aluminum stainless steel foil for use as a substrate for a

A process for producing a metallic catalyst-carrier, comprising the steps of: preparing a steel sheet containing 9.0 to 25.0 wt % Cr and 0.01 to 6.0 wt % Al, plating the steel sheet with Ni at an amount of from 0.3 to 10.0 g/m.sup.2, then plating with Al or Al-alloy at a plated amount defined by the formula; ##EQU1## and with a provision that the thickness of an Al-Fe alloyed layer is controlled to a thickness of 10 .mu.m or less, cold rolling to a rolled thickness of 0.1 mm or less, working to a body of a required form, and heat-treating the body.

Processes for production of metallic catalyst-carrier and catalytic

In a carrier for a catalyst for purifying exhaust gas, a honeycomb is formed by coiling a corrugated sheet and a flat sheet together, and is mounted in an outer cylinder. An Al (alloy)-clad foil or hot-dip Al (alloy) galvanized foil is used to form the honeycomb, which is heat treated in a vacuum or a reducing atmosphere to simultaneously bond the corrugated sheet and flat sheet together and also bond the honeycomb to the outer cylinder, and to diffuse Al into the foil.

Method for producing a base of a catalyst carrier for automobile exhaust

Growing community of inventors

Sagamihara, Japan

Keiichi Ohmura