Sliding wear behaviour of plasma sprayed WC-NiCrBSi coatings at different temperatures
Sliding wear behaviour of plasma sprayed WC-NiCrBSi coatings at different temperatures
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DOI：
10.1016/s0043-1648(01)00703-7
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发表时间：
2001-10
期刊：
影响因子：
5
通讯作者：
A. Martin;Jesús Rodríguez;J. E. Fernández;R. Vijande
中科院分区：
文献类型：
--
作者：
A. Martin;Jesús Rodríguez;J. E. Fernández;R. Vijande
等离子喷涂层被用来减少许多工业部件的磨损。似乎很少有研究考虑块体温度对涂层耐磨性的影响。为了研究少量WC对镍基合金的影响，在以氧化铝柱体为配质体的摆动摩擦试验机上进行了磨损试验。试件分别在20、250和500°C的标称温度下进行试验，滑动速度保持在0.15m/S恒定，法向载荷范围为50~200N。实验方案揭示了涂层行为和材料在正常载荷和温度下的磨损率。对偶体的磨损率有相当大的差异。通过扫描电子显微镜(SEM)和能量色散X射线能谱(EDAX)对磨损试件的分析，提供了与每种条件相关的主要机制的信息。
Plasma sprayed coatings are used for reducing the wear losses of many industrial components. It appears that few studies have considered the influence of the bulk temperature on the wear resistance of coatings. To study these effects in a Ni-based alloy reinforced with small quantities of WC, wear tests were carried out in an oscillating friction machine with alumina cylinders as counterbodies. The specimens were tested at 20, 250 and 500°C nominal temperature; the sliding speed was kept constant at 0.15m/s, and the normal load ranged from 50 to 200N. The experimental programme reveals the coating behaviour and the wear rates of the material in terms of normal load and temperature. Considerable differences were found between the wear rates of the counterbodies. The analysis of the worn specimens by scanning electron microscopy (SEM) and energy dispersive X-rays spectroscopy (EDAX) provides information about the main mechanism associated with each condition.