【摘要】 Ti-C-Ni涂层的性能受反应等离子喷涂工艺参数的影响较大。采用反应等离子喷涂以不同的功率30.0,27.5,25.0 kW在45钢表面制备了Ti-C-N涂层。对涂层进行了SEM,XRD,EDS,显微硬度分析和电化学行为分析。结果表明:不同功率制备的Ti-C-N涂层厚度约为150μm;随喷涂功率降低,涂层的硬度下降,喷涂功率为25.0 kW时获得的涂层较为致密,在3.5%NaCl溶液中的阳极极化存在很宽电位范围的钝化区,电流密度维持在较低水平,耐腐蚀性最佳。更多还原

【Abstract】 Ti-C-N coating was prepared on the surface of AISI-1045 steel by reactive plasma spraying.The microstructure,phase composition and elemental composition of the as-sprayed coating were analyzed by means of scanning electron microscopy,X-ray diffraction and energy dispersive spectrometry.The effect of spraying power(30.0,27.5,25.0 kW) on the microstructure,microhardness and corrosion resistance of as-sprayed coating was investigated.Results show that Ti-C-N coatings prepared at different spraying power are about 150 μm thick,and their micro-hardness rises with increasing spraying power.Particularly,the Ti-C-N coating prepared at spraying power of 25.0 kW is compact and possesses the best corrosion resistance,showing a broad anodic polarization passivation zone and low current density in 3.5% NaCl solution.更多还原