A novel method of surface modification for steel by plasma electrolysis carbonitriding
A novel method of surface modification for steel by plasma electrolysis carbonitriding
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DOI：
10.1016/j.msea.2006.12.067
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发表时间：
2007-06
期刊：
影响因子：
6.4
通讯作者：
Dejiu Shen;Yu‐Lin Wang;P. Nash;G. Xing
中科院分区：
文献类型：
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作者：
Dejiu Shen;Yu‐Lin Wang;P. Nash;G. Xing
提出了一种在乙醇胺电解液中对Q235钢进行表面碳氮共渗改性的新方法。研究了渗层的组织、化学成分、相组成及性能。结果表明，该工艺可获得较厚的碳氮共渗层。在150 V下处理75 s时，最大厚度约为70μm，相应的显微硬度为HV 750，是基体的4.5倍。碳氮共渗层主要由马氏体、残余奥氏体、含铁的碳化物和氮化物（如Fe 3C、Fe 5C 2和Fe 3 O-Fe 2 - 3 N）组成。磨损试验表明，与基体相比，试样的耐磨性得到了显著提高。
A novel method of surface carbonitriding modification for Q235 steel in an ethanolamine electrolyte was proposed and demonstrated in this paper. Microstructure, chemical and phase composition and properties of the carbonitriding layer were investigated. The results show that the thick carbonitriding layer can be obtained. When the substrate was processed at 150V for 75s, the highest thickness is about 70μm, and the corresponding microhardness is HV750, which is 4.5 times higher than that of the substrate. The carbonitriding layers are composed of martensite, remained austenite, carbonides and nitrides with iron, such as Fe3C, Fe5C2and ɛ-Fe2–3N. Wear test shows that the wear resistance of the sample is improved significantly compared to the substrate.