Interface Microstructure and Tribological Properties of Flame Spraying NiCr/La2O3 Coatings
Interface Microstructure and Tribological Properties of Flame Spraying NiCr/La2O3 Coatings
复制标题
DOI：
10.1007/s11666-014-0164-4
复制
发表时间：
2014-10
影响因子：
3.1
通讯作者：
Zhenyuan Zhang;Bunv Liang;Hongjian Guo
中科院分区：
文献类型：
--
作者：
Zhenyuan Zhang;Bunv Liang;Hongjian Guo
含0.5、1.0、1.5和2.0 wt.%的NiCr合金涂层采用火焰喷涂和熔融工艺在1045碳钢表面沉积La_2O_3。涂层/基体系统的界面微观结构的调查进行了场发射枪扫描电子显微镜，附加能量色散谱。在干滑动磨损条件下，研究了La 2 O3对涂层摩擦学性能的影响。结果表明，适量的La 2 O3可以细化NiCr合金镀层的组织，当La 2 O3的质量分数为1.0%时，镀层的显微硬度和耐磨性提高最好。
NiCr alloy coatings with 0.5, 1.0, 1.5 and 2.0 wt.% of La2O3 were deposited on 1045 carbon steel by a flame spraying and melting processing. Interface microstructure investigations of the coating/substrate systems were conducted by field emission gun scanning electron microscopy, with attached energy dispersive spectroscopy. The effect of La2O3 addition on the tribological properties of the coatings was investigated under dry sliding wear conditions. The result showed that the microstructure of the NiCr alloy coatings are refined with proper amounts of La2O3, and the microhardness and wear resistance of the coatings show best enhancement with 1.0% La2O3.