感应熔覆原位自生TiC/Ni基复合涂层的组织与耐磨性研究

为了提高16Mn钢的干滑动磨损耐磨性能,以Ni60、钛粉和石墨粉为原料对16Mn钢表面进行感应熔敷处理,制备出以TiC颗粒为增强相的原位自生复合涂层,利用金相、SEM、XRD等技术分析了涂层的显微组织,在室温干滑动磨损试验条件下测试了涂层的耐磨性.结果表明:涂层中TiC颗粒均匀分布于共晶基体上,整个涂层组织均匀、无气孔、无裂纹;涂层与基材形成了良好的冶金结合,涂层具有很高的硬度,在室温干滑动磨损试验条件下具有优异的耐磨性能.

Microstructure and Wear Resistance of Induction Cladding In-Situ TiC/Ni Metal Matrix Composite Coating on Mn-Al-loyed Steel

Metal matrix composite coating reinforced with TiC was fabricated on 16Mn steel substrate by induction cladding,using the powders of Ni60,titanium,and graphite as the raw materials,which was aiming at increasing the wear resistance of the steel.The microstructure of the composite coating was investigated using optical microscope,scanning electron microscope,and X-ray diffractometer.The hardness and friction and wear behavior of the composite coating in dry sliding condition were examined as well.The results indicated that the induction cladding composite coating was free from porous and microcracks and homogeneous in terms of the microstructure as well,with the TiC particles as the reinforcing agent to be uniformly distributed in the eutectic matrix.Moreover,the composite coating had a much high hardness and excellent wear resistance under dry sliding condition.