用抗氧化性强的钢制造排气净化器据报道，一种成分为２０％Ｃｒ、５％Ａｌ及添加了少量Ｚｒ和Ｌａ的钢已用于制造催化式排气净化器的衬底，其服役时间是传统的２０Ｃｒ－５ＡＩ的３倍。该合金是由日本川崎制铁公司开发的，目的是改善发动机高温区工作的催化式排气净化器耐... Exhaust Gas Purifier Made of Oxidation-Resistant Steel It has been reported that a steel with a composition of 20% Cr, 5% Al and a small amount of added Zr and La has been used in the manufacture of a catalyst for a catalytic converter Service time is three times the traditional 20Cr-5AI. The alloy is developed by Japan’s Kawasaki Iron and Steel Company, the purpose is to improve the work of high temperature engine catalytic exhaust purifier.