专利名称：The rustless steel null which is superior 发明人：YAHAGI SHINICHIRO，矢萩 慎一郎,SAITO AKIHIKO，齋藤 章彦
申请号：JP特願平2-195253
申请日：19900724
公开号：JP第2917450号B2
公开日：
19990712
专利内容由知识产权出版社提供less is more代言人
摘要：PURPOSE:To improve the corrosion resistance of a stainless steel by preparing a stainless steel contg. specified ratios of C, Si, Mn, P, S, Cr, Al, N and O and in which Al2O3 is formed on the surface by heat treatment. CONSTITUTION:A stainless steel contg., by weight, <=0.015% C, <=4.0% Si, <=0.30% Mn, <=0.030% P, <=0.015% S, 4 to 30% Cr, 0.01 to 10% Al, <=0.050% N, <=0.010% O and the balance Fe with impurities and more improved in corrosion resistance by the formation of Al2O3 on the surface by heat treatment is prepd. At the time of executing the heat treatment for obtaining the further improvement of the corrosion resistance by the formation of Al2O3 on the surface in the above-mentioned manner, it is executed under the conditions where the total pressure is regulated to about 10<-10>Torr to 10 atmospheric pressure, the oxygen pressure to about O<=Po2<=100% and the temp. to about 400 to 1300 deg.C.
申请人：DAIDO TOKUSHUKO KK，大同特殊鋼株式会社
地址：愛知県名古屋市中区錦1丁目11番18号
国籍：JP
代理人：小塩 豊
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