Friction and wear behavior of plasma nitrided 1Cr18Ni9Ti austenitic stainless steel under lubrication condition
Friction and wear behavior of plasma nitrided 1Cr18Ni9Ti austenitic stainless steel under lubrication condition
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DOI：
10.1016/j.msea.2005.04.012
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发表时间：
2005-08
期刊：
影响因子：
6.4
通讯作者：
Yanqiu Xia;Junhong Hu;Feng Zhou;Yimin Lin;Y. Qiao;T. Xu
中科院分区：
文献类型：
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作者：
Yanqiu Xia;Junhong Hu;Feng Zhou;Yimin Lin;Y. Qiao;T. Xu
对1Cr18Ni9Ti不锈钢进行了离子渗氮改性。用X射线衍射分析了等离子渗氮层的相组成。在Optimol SRV振动摩擦磨损试验机上研究了改性和未改性不锈钢试样在含有各种抗磨极压添加剂的液体石蜡润滑下与SAE52100钢摩擦副的摩擦磨损性能。通过改性层与润滑添加剂硫化烯烃（SO）和磷酸胺盐（PN）之间的相互作用，使用扫描电子显微镜观察磨损表面的形貌。用X射线光电子能谱分析了改性钢磨损表面上几种典型元素的化学状态。结果表明，改性后的试样比未改性的试样具有更好的减摩抗磨性能。这部分归因于离子渗氮后不锈钢表面的硬度和相组成的变化以及不锈钢与极压抗磨添加剂之间的摩擦化学反应。摩擦副表面形成了由各种摩擦化学产物组成的表面保护膜，与吸附的边界润滑膜一起起到了减摩抗磨的作用。
1Cr18Ni9Ti stainless steel was modified by plasma nitriding. The phase composition of the plasma nitrided layer was examined by means of X-ray diffraction. The friction and wear properties of the modified and unmodified stainless steel specimens sliding against SAE52100 steel under the lubrication of liquid paraffin containing various anti-wear and extreme pressure additives were investigated on an Optimol SRV oscillating friction and wear tester, with the interactions among the modified surface layer and the lubricating additives sulphurized olefin (SO) and phosphate amine salt (PN) to be focused on. The morphologies of the worn surfaces were observed using a scanning electron microscope. The chemical states of several typical elements on the worn surfaces of the modified steel surfaces were examined by means of X-ray photoelectron spectroscopy. Results showed that the modified sample had better friction-reducing and anti-wear abilities than the unmodified one. This was partly attributed to the change in the hardness and phase composition of the stainless steel surfaces after plasma nitriding and tribochemical reactions among the stainless steel and the extreme pressure and anti-wear additives. The resultant surface-protective films composed of various tribochemical products together with the adsorbed boundary lubricating film contributed to reduce the friction and wear.