Alternating current field assisted pack boriding to Fe2B coating

Alternating current field assisted pack boriding to Fe2B coating
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Fe2B 涂层的交流场辅助包渗硼

DOI:
10.1179/1743294412y.0000000104
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发表时间:
2013-04
影响因子:
2.8
通讯作者:
J Cheng
J Cheng
中科院分区:
材料科学3区
文献类型:
--
作者:
F Xie;L Sun;J Cheng

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采用交流场 (ACF) 在 800°C 下进行包渗硼,在 AISI 1045 钢上产生厚的 Fe2B 涂层。研究了ACF对硼化物涂层生长的影响,并对涂层的结构和物相进行了表征。结果表明,ACF 可以极大地增强包渗硼,并形成单一 Fe2B 相涂层,该涂层比相应的传统包渗硼 (CPB) 形成的涂层厚得多。随着 ACF 电流从 1 A 增加到 9 A,ACF 的增强效果几乎成比例地增加。涂层的生长速率与渗硼时间的关系显示出与 CPB 相同的抛物线特征。 ACF 对单相 Fe2B 涂层形成的影响机制与渗硼介质中化学反应的增强以及介质和处理样品中扩散的增强有关。
An alternating current field (ACF) was employed in pack boriding at 800°C to produce a thick Fe2B coating on an AISI 1045 steel. The effect of ACF on the growth of the boride coating was studied, and the coating's structure and phases were characterised. The results showed that an ACF could greatly enhance pack boriding and lead to the formation of a single Fe2B phase coating, which is much thicker than a coating by corresponding conventional pack boriding (CPB). The ACF's enhancing effect increased almost proportionally with increasing ACF currents from 1 to 9 A. The growth rate of the coating versus boriding time showed the same parabolic character as CPB. The mechanism of the ACF's effect on the formation of the single phase Fe2B coating was associated with enhanced chemical reactions in the boriding media and enhanced diffusion both in the media and in the treated sample.
DOI: 10.1016/j.vacuum.2009.10.038
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