Novel pack cementations: direct current field assisted pack cementations
Novel pack cementations: direct current field assisted pack cementations
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DOI：
10.1179/1749514812z.00000000022
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发表时间：
2012-06
期刊：
影响因子：
--
通讯作者：
F. Xie;J. Pan
中科院分区：
文献类型：
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作者：
F. Xie;J. Pan
摘要 直流场（DCF）辅助包埋工艺旨在克服传统包埋（CPC）中加工温度较高和时间较长的问题。阳极和作为阴极的样品相互平行，并嵌入粉末剂中，全部密封在不锈钢盒中。通过在浸泡过程中在电极之间施加 DCF，研究了 DCF 对包渗碳的影响，包括渗硼、氮碳共渗、渗铝、硅化和铬化。结果表明 DCF 可以极大地增强所有这些粘合作用。在 DCF 的帮助下，可以在较低的温度和/或较短的浸泡时间下进行有效的包固结。直流场赋予处理后的样品与CPC相同或优于CPC的性能。建议 DCF 使阴极样品面向阳极的一侧及其周围所需元素的浓度远高于样品中任何其他位置的浓度。
AbstractDirect current field (DCF) assisted pack cementation processes are designed to overcome the problems of higher processing temperature and longer time in conventional pack cementations (CPCs). Anode and specimen as cathode are parallel with each other, and are embedded in powder agents, all of which are sealed in a stainless steel box. Effects of DCF on pack cementations, including boriding, nitrocarburising, aluminising, siliconising and chromising, have been investigated by applying DCF between the electrodes during soaking. The results indicate that DCF can greatly enhance all these cementations. Effective pack cementations can be carried out at a lower temperature and/or by shorter soaking time with the help of DCF. Direct current field endows the treated specimen with properties being the same as or superior to that by CPC. It is proposed that DCF makes the concentrations of required element at and around the cathode specimen’s side facing the anode much higher than in any other positions in t...