Characteristics and mechanisms of accelerating pack boriding by direct current field at low and moderate temperatures
Characteristics and mechanisms of accelerating pack boriding by direct current field at low and moderate temperatures
复制标题
中低温直流场加速包渗硼特性及机理
DOI：
10.1016/j.surfcoat.2011.12.003
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发表时间：
2012-02
影响因子：
5.4
通讯作者：
Jianwei Pan
中科院分区：
文献类型：
--
作者：
Fei Xie;Li Sun;Jianwei Pan
采用直流磁场（DCF）进行中低温包渗。为了研究DCF辅助包渗的特性和DCF加速包渗的机理，将样品在密封包渗容器中放置不同位置。实验结果表明，DCF不仅对作为阴极的样品，而且对位于阴极和阳极之间的样品都有增强的作用。增强的程度随样品位置的不同而不同。在阴极样品面向阳极的一侧实现了最强的增强。提出了DCF的物理效应，促进药剂中的化学反应，提高了含硼物种的活性和生产力。DCF通过迫使含硼物质快速向阴极扩散，使得含硼物质在作为阴极的样品及其周围的浓度远远高于其他任何位置。DCF电致硼在样品中的迁移导致样品面向阳极一侧的硼化层生长更快。DCF的电磁效应可能有助于在样品中形成更多的空位，有利于硼在基体中的扩散。
Direct current field (DCF) was employed in pack boriding at low and moderate temperatures. Samples were arranged in different positions in a sealed pack boriding container for studying characteristics of the DCF assisted pack boriding and mechanisms of accelerating pack boriding by DCF. The test results revealed that DCF enhanced pack boriding not only to samples as cathode but also to samples located between the cathode and anode. The extent of the enhancement varied with the location of the sample. The strongest enhancement was achieved on the cathode sample's side facing the anode. It is proposed that the DCF's physical effect of enhancing chemical reactions in the agent increases the activity and productivity of boron-containing species. The DCF makes the concentrations of active boron-containing species at and around the sample as cathode much higher than in any other position by forcing boron-containing species to diffuse fast toward the cathode. The electrically induced boron migration in the sample by DCF leads a faster growth of boriding case at the sample's side facing the anode. The DCF's electromagnetic effect might be helpful for forming more vacancies in the sample, which favors boron's diffusion in the substrate.
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影响因子：
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作者：
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通讯作者：
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作者：
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