首页|Ultra wear resistant TiC-Fe coating prepared by high efficient and economic plasma cladding method
Ultra wear resistant TiC-Fe coating prepared by high efficient and economic plasma cladding method
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The key components of engineering machinery frequently failed due to working in the high load and high wear operating envir-onment.And the performance of the Fe-based alloy coatings typically employed need to be improved for fulfilling the service requirements.Herein,a TiC strengthened Fe-based alloy cladding layer,named TiC-Fe coating,was designed and prepared by plasma cladding technology.The frictional wear performance of coating under various loads was tested.The wear morphology of the coating was observed,and its wear mechanism was examined.The results indicated that the TiC-Fe coating was well formed and metallurgically bonded to the Q345C substrate.Its microstructure mainly consisted of Fe-Cr solid solution,α-Fe phase,(Fe,Cr)7C3 phase and TiC phase.The coating exhibited an average microhardness of 980 HV0.2,which was about 5.4 times that of the Q345C substrate.The wear mass loss of the TiC-Fe coatings was much smaller than that of the Q345C substrate,which indicated that the wear resistance of the Q345C coating was superior to the substrate,and the wear mechanism of the coating was mainly attributed to the abrasive wear.
plasma claddingTiCmicrostructurewear resistance
黄大牛、仝永刚、华熳煜、牟泓霖、柳建、蔡志海、胡永乐
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College of Automotive and Mechanical Engineering,Changsha University of Science and Technology,Changsha 410114,China
National Engineering Research Center for Mechanical Product Remanufacturing,Army Academy of Armored Forces,Beijing 100072,China
国家自然科学基金国家自然科学基金Science and Technology Innovation Program of Hunan Province145 project and Natural Science Foundation of Hunan Province
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