火焰喷涂和等离子喷涂FeCrBSi涂层及其防滑和耐磨性能研究

发布时间：2018-03-27 22:11

本文选题：等离子喷涂　切入点：火焰喷涂　出处：《表面技术》2017年07期

【摘要】：目的采用大气等离子喷涂(APS)和火焰喷涂(FS)在304不锈钢基体上制备FeCrBSi涂层,并对比研究两种工艺制备涂层的防滑和耐磨性能。方法通过光学显微镜、场发射扫描电镜和X射线衍射仪对涂层的显微形貌和结构进行分析,通过维氏硬度计测试涂层的显微硬度。采用摩擦磨损试验机和三维光学显微镜,测量涂层在干摩擦条件下的摩擦系数和磨损量。结果两种喷涂方法制备的涂层多孔,在喷涂过程中极少发生氧化。与火焰喷涂涂层(749HV0.1)相比,大气等离子喷涂涂层(837HV0.1)具有更高的维氏硬度值。在摩擦试验中,火焰喷涂涂层的磨损率为(38.63±2.37)×10~(-6)m~3/(N·m),而大气等离子喷涂涂层的磨损率为(9.5±0.49)×10~(-6)m~3/(N·m),但两种涂层的摩擦系数区别较小,在频率2 Hz、载荷10 N的条件下的摩擦系数为0.6~0.7。结论两种涂层的磨损机制均为疲劳磨损,喷涂态FeCrBSi涂层具有较好的防滑耐磨性能,且大气等离子喷涂涂层性能优于火焰喷涂涂层。
[Abstract]:Objective to prepare FeCrBSi coatings on 304 stainless steel substrates by atmospheric plasma spraying (APS) and flame spraying (FSs), and to compare the skid resistance and wear resistance of the coatings prepared by the two processes. Methods the antiskid and wear resistance of the coatings were studied by optical microscope. The microstructure and morphology of the coating were analyzed by field emission scanning electron microscope (SEM) and X-ray diffractometer. The microhardness of the coating was tested by Vickers hardness tester and 3D optical microscope. The friction coefficient and wear rate of the coating under dry friction conditions were measured. Results the coating prepared by the two spraying methods was porous and rarely oxidized in the spraying process, compared with the flame sprayed coating (749HV0.1). The wear rate of flame sprayed coating was 38.63 卤2.37 脳 10~(-6)m~3/(N MMT, while that of atmospheric plasma spraying coating was 9.5 卤0.49 脳 10~(-6)m~3/(N MMT, but the friction coefficient of the two kinds of coatings was smaller than that of air plasma spraying coating, the Vickers hardness value was higher than that of air plasma spraying coating, and the wear rate of flame sprayed coating was 38.63 卤2.37 脳 10~(-6)m~3/(N MMT, while that of atmospheric plasma spraying coating was 9.5 卤0.49 脳 10~(-6)m~3/(N MMT, but the friction coefficient of the two coatings was smaller. The friction coefficient of the two coatings is 0.6 ~ 0.7under the condition of 2 Hz frequency and 10 N load. Conclusion the wear mechanism of the two coatings is fatigue wear, the FeCrBSi coating has better anti-slip wear resistance, and the atmospheric plasma spraying coating has better performance than the flame spraying coating.
【作者单位】：扬州大学机械工程学院;
【基金】：扬州市-扬州大学市校合作基金(YZ2016254) 江苏省自然科学基金(BK20140487,BK20160472)~~
【分类号】：TG174.4

【参考文献】