In-situ Synthesized WC Particles Reinforced Fe-Based Composite Coating By Argon Arc Cladding with Tungsten Powder

摘要

In-situ synthesized WC particles reinforced Fe-based composite coating was prepared by argon arc cladding on Q235 with mixture of tungsten powders, graphite and iron powders mainly. Microstructures of coating were investigated using SEM, EDS and XRD. Micro-hardness and wear resistance were also studied. The result showed that the main phases of coating were WC, Fe_3W_3C, martensite and residual austenite. The WC particles were well distributed in matrix and appeared significant growth and reunion from bottom to top of coating. Hardness of the coating ranged between HV_(0.2) 1102.2 to 1863.5. Wear loss of Q235 steel was 37.2 times than that of the coating.