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将不锈钢制件置于氧化性气氛中,加热到400℃至1250℃,以形成Fe_3O_4的表层,再用一种稀无机酸溶液处理其表面,处理时问30～60分钟,处理温度约60℃。这样处
The stainless steel parts are placed in an oxidizing atmosphere, heated to 400 ° C to 1250 ° C to form a surface layer of Fe_3O_4, which is then treated with a dilute mineral acid solution for 30 to 60 minutes at a treatment temperature of about 60 ° C . This place