Electropulsing has been imposed on molten AISI 304 stainless steel and its effects on the inclusion size and corrosion properties have been investigated. The average size of inclusions in electropulsing-treated samples was finer than that in untreated ones. A theoretical analysis shows that the mobility of solute atoms increases with electropulsing treatment. This promotes the nucleation of inclusions. Owing to a smaller inclusion size, the electrochemical experiments reveal that the pitting corrosion resistance of the electropulsing-treated stainless steel is significantly improved. The beneficial effects of electropulsing on the refinement of inclusions and the resistance to pitting corrosion increase with an increase in current density. Electropulsing treatment, therefore, provides a promising means to improve pitting corrosion resistance.

中文翻译：

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电脉冲对304不锈钢夹杂物尺寸及耐蚀性的影响

已对熔融 AISI 304 不锈钢施加电脉冲，并研究了其对夹杂物尺寸和腐蚀性能的影响。电脉冲处理样品中夹杂物的平​​均尺寸比未处理样品中的细。理论分析表明，溶质原子的迁移率随着电脉冲处理而增加。这促进了夹杂物的成核。由于夹杂物尺寸较小，电化学实验表明经电脉冲处理的不锈钢的耐点蚀性能显着提高。随着电流密度的增加，电脉冲对夹杂物的细化和抗点蚀的有益效果也增加。因此，电脉冲处理为提高耐点蚀性提供了一种有前景的方法。