Arent Fox Kintner Plotkin & Kahn, PLLC
Stainless steel coated with intermetallic compound and process for producing the same
 An intermetallic-compound coated stainless steel having excellent rigidity, toughness, wear resistance and corrosion resistance comprises a substrate of a martensite stainless steel having a Vickers hardness of 400 or more, and a hard film having a bottom surface adhered to the substrate and an exposed top surface. The hard film has an outermost layer made of a compound selected from the group consisting of a Ti--Ni intermetallic compound, Ti--Fe intermetallic compound, and a mixture of the Ti--Ni intermetallic compound and a Ti--Cu intermetallic compound. The coated stainless steel can be produced by cladding an outer sheet made of Ti or a Ti alloy to a martensite stainless steel sheet directly or through an intermediate sheet made of Ni, Fe or a Ni--Cu alloy, heating the laminate at a temperature of 900.degree. C. to 1150.degree. C. for 30 seconds to 5 minutes, and then cooling the heated laminate at a cooling rate of 1.degree. C./sec or more. 
Daido Steel Co., Ltd. Matsushita Electric Works, Ltd.
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C23C C23C C23C Y10T C23C Y10T Y10S C23C Y10T
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Shuji Shinji Fumio Hiroaki Junji Shigetoshi Hiroshi Tadashi
Yamada Fujimoto Iwane Yoshida Imai Sakon Yamada Hamada