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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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La在脉冲离子渗氮表层中的扩散及其对氮分布和相结构的影响
, PP. 487-491
Keywords: 扩散,相结构,渗入元素分布
Abstract:
研究了在脉冲等离子体稀土渗氮过程中稀土元素Ｌａ对氮浓度分布和相结构的影响,揭示了Ｌａ在化合物层中的扩散规律,结果表明与常规离子渗氮相比稀土绵添加,提高了表面氮浓度,随处理时间的延长而增加,当渗氮时间从２ｈ增加至２４ｈ时,化合物导上ε－Ｆｅ２－３Ｎ（ε）转化为ε－Ｆｅ２－３Ｎ和γ‘－Ｆｅ４Ｎ（γ’）双相,此外,Ｌａ可以扩散进入ε和γ‘相中,Ｌａ的扩散规律受制于化合物的γ’－Ｆｅ４Ｎ的比例.
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