【摘要】 采用高能球磨、等离子放电烧结技术以不锈钢粉末制备了超细晶316不锈钢,通过动电位极化测量和SEM、EDS等腐蚀产物的微观分析,研究了超细晶不锈钢和普通轧制的316不锈钢在氯化铁与盐酸的混合溶液、甲酸和强碱溶液中耐蚀性。结果表明,与普通轧制的316不锈钢相比,超细晶不锈钢耐腐蚀能力有较大的提高;在氯化铁与盐酸的混合溶液中两种不锈钢的腐蚀速率均最大。更多还原

【Abstract】 Combination of high-energy ball milling mechanical alloying and spark plasma sintering was used to obtain ultrafine-grained stainless steel materials.The corrosion behavior in a mixture solution of ferric chloride and hydrochloric acid,alkali(NaOH),and formic acid were studied by potentiodynamic polarization technique.SEM and EDS are used to reveal the microstructure characteristics of corrosion products.The results show that in comparison with the ordinary rolled 316 stainless steel,the ultrafine-grained stainless steel showed a higher corrosion resistance,and among the three solutions the corrosion rate of the two steels in mixture of ferric chloride and hydrochloric acid is the highest.更多还原