The effect of diluent addition on microstructure and properties of steel matrix hard coatings reinforced by in-situ synthesis TiC particles
CHENG Jun1,2，GAO Ke-wei1，GUO Zhi-meng1
（1. School of Materials Science and Engineering， University of Science and Technology Beijing， Beijing 100083， China 2. School of Materials and Metallurgy， Inner Mongolia University of Science and Technology， Baotou 014010， China）
Abstract：In order to improve the surface quality and micro-hardness of the steel matrix hard coating， TiC particles reinforced steel matrix hard coating was prepared by in-situ synthesis on the casting surface， and the V-EPC & the SHS reaction were used. The effects of diluents addition on the microstructure and mechanical properties of the steel matrix hard coatings were studied with X-ray， OM， SEM， EDS and hardness tester. The results show that metallurgical bond forms between the hard coatings and the steel matrix. The hard coating is composed of TiC particles and α-Fe matrix. With the increase of TiC addition， the combustion reaction temperature decreases； the coating density improves； the TiC particles are ball or ball-like shape and are evenly distributed in the matrix； and the volume fraction of TiC particles and micro-hardness of the hard coating is increased significantly. The comprehensive properties of the coating are the best with 10% (mass percent) TiC addition.
程 军，高克玮，郭志猛. 稀释剂对原位合成TiCp/钢基硬质涂层组织和性能的影响[J]. , 2016, 26(02): 31-37.
CHENG Jun，，GAO Ke-wei，GUO Zhi-meng. The effect of diluent addition on microstructure and properties of steel matrix hard coatings reinforced by in-situ synthesis TiC particles. , 2016, 26(02): 31-37.
2016, Vol. 26 
