Tribological properties of sulfurized-nitrided layer prepared by a two-step method
Tribological properties of sulfurized-nitrided layer prepared by a two-step method
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DOI：
10.1016/j.vacuum.2011.02.011
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发表时间：
2011-04-15
期刊：
影响因子：
4
通讯作者：
Liu, Jiajun
中科院分区：
文献类型：
--
作者：
Yue, Wen;Gao, Xiaocheng;Liu, Jiajun
研究了AISI 4135钢渗氮层和渗硫层在油润滑条件下的摩擦学性能，分别采用离子渗氮处理和离子渗氮+硫化双重处理两步法制备渗层。采用球盘摩擦磨损试验机对其摩擦学性能进行了评价。用扫描电子显微镜(SEM)、扫描俄歇探针(SAM)和X射线光电子能谱(XPS)对处理层和磨损表面的形貌和化学成分进行了分析。结果表明，含较薄FeS层的渗硫样品在承载能力、耐磨性、减摩性能和持续时间等方面均明显优于渗氮样品。其机理可能是分解后的FeS层中活化的S原子促进了新的FeS化学反应膜的形成，从而导致FeS薄层在较长时间内起到固体润滑剂的作用。(C)2011爱思唯尔有限公司。保留所有权利。
The tribological properties of nitrided layer and sulfurized-nitrided layer of AISI 4135 steel were investigated under oil lubrication, and the layers were prepared by the ion nitriding treatment and a two-step method as the ion nitriding plus sulfurizing duplex treatment, respectively. A ball-on-disc friction and wear tester was adopted to evaluate the tribological performance. Scanning electron microscope (SEM), scanning Auger microprobe (SAM) and X-ray photoelectron spectroscope (XPS) were used to identify the morphologies and chemical compositions of the treated layer and the worn surface. It was presented that the sulfurized-nitrided sample with a thin FeS layer possessed much better tribological behaviors than the nitrided sample, including load carrying capacity, wear resistance, friction reduction and duration time. The mechanism was supposed that the decomposed activated S atoms of FeS layer promoted a new FeS chemical reaction film formation, which induced to the thin FeS layer playing as a solid lubricant for a longer time. (C) 2011 Elsevier Ltd. All rights reserved.