Study of the frictional-wear performance and abrasion resistance mechanism of a high-speed arc-sprayed FeNiCrAl coating
Study of the frictional-wear performance and abrasion resistance mechanism of a high-speed arc-sprayed FeNiCrAl coating
复制标题
高速电弧喷涂FeNiCrAl涂层摩擦磨损性能及耐磨机理研究
DOI：
10.1016/j.surfcoat.2019.04.092
复制
发表时间：
2019-07-25
影响因子：
5.4
通讯作者：
Xu, Binshi
中科院分区：
文献类型：
--
作者：
Tian, Haoliang;Wang, Changliang;Xu, Binshi
高速电弧喷涂FeNiCrAl涂层是轴类零件的表面耐磨防护材料。为了深入研究FeNiCrAl涂层的摩擦磨损性能，选取3Cr13涂层进行对比，采用MM-200摩擦磨损试验机在不同摩擦条件（干摩擦和油润滑条件）和摩擦速度（0.42 m/s和0.84 m/s）下进行摩擦试验。使用X射线衍射仪、硬度计和配备能量色散光谱（EDS）的扫描电子显微镜（SEM）分析了两种涂层的摩擦系数和摩擦表面形貌的变化。结果表明，在相同摩擦条件下，3Cr13涂层的摩擦系数比FeNiCrAl涂层高约2倍； 3Cr13涂层的磨损体积损失也远远超过FeNiCrAl涂层。 FeNiCrAl涂层由于在摩擦表面形成致密的氧化铁、Fe3Al和Al2O3薄膜，因此具有优异的耐磨性能。 FeNiCrAl涂层具有优越的硬度，覆盖摩擦表面，提高涂层耐磨性能。
High-speed arc-sprayed FeNiCrAl coatings are a surface abrasion protection material for shaft parts. To conduct in-depth research on the frictional and wear performance of FeNiCrAl coatings, the 3Cr13 coating is selected for comparison to perform friction tests using an MM-200 friction and wear tester under different friction conditions (dry friction and oil-lubricated conditions) and friction speeds (0.42 m/s and 0.84 m/s). The variations of the friction coefficients and the friction surface morphology patterns of the two types of coatings are analyzed using an X-ray diffractometer, a hardness tester, and scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS). The results show that under identical friction conditions, the friction coefficient of the 3Cr13 coating is approximately two times higher than that of the FeNiCrAl coating; the wear volume loss of the 3Cr13 coating also far exceeds that of the FeNiCrAl coating. The FeNiCrAl coating has a superior abrasion performance because a dense film of iron oxide, Fe3Al and Al2O3 forms on the friction surface. The FeNiCrAl coating has superior hardness, and it covers the friction surface to improve the coating abrasion performance.