闫梦龙,谢飞,潘建伟

• 1:常州大学材料科学与工程学院
• 2:常州大学江苏省材料表面技术重点实验室
• 3:常州大学怀德学院

摘要(Abstract)：

通过设置一对电极,在粉末法渗铝过程中对置于两极间的45钢试样与渗剂施加交流电场,进行交流电场增强粉末法渗铝。通过对渗铝层的生长、组织与相结构特性的观察分析,研究交流电场对45钢粉末法渗铝的影响。结果表明:施加适当的交流电场可以显著促进渗铝过程,促渗作用随电场电流增加而增加;在仅含2%铝粉的渗铝剂中进行电场电流为2 A、保温4 h的渗铝,在500℃即可形成约40μm的渗铝层,在800℃时形成厚约180μm的渗铝层;交流电场能够降低渗铝层表层的含铝量,避免表层形成硬脆富铝相;交流电场粉末法渗铝层在900℃时具有优良的抗氧化性能。分析认为,交流电场的促渗作用与电场对渗铝过程中试样内的扩散、渗剂中的反应与扩散及渗罐内的实际温度等的影响有关。

关键词(KeyWords)： 粉末法渗铝;交流电场;扩散;抗氧化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51171032)

作者(Author): 闫梦龙,谢飞,潘建伟

DOI: 10.13289/j.issn.1009-6264.2015.02.036

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