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YANG Ke, LI Zhenyu, JIANG Yongfeng, BAO Yefeng. Effect of laser remelting on erosion resistance of plasma sprayed Al2O3-40% TiO2 coating[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(10): 17-20.
Citation: YANG Ke, LI Zhenyu, JIANG Yongfeng, BAO Yefeng. Effect of laser remelting on erosion resistance of plasma sprayed Al2O3-40% TiO2 coating[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(10): 17-20.
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Effect of laser remelting on erosion resistance of plasma sprayed Al2O3-40% TiO2 coating

  • College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213022, China

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  • Received Date: November 25, 2015
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    • Abstract
  • The Al2O3-40% TiO2 coating was made by plasma spraying, and remelted laser beam. The erosion resistance of plasma sprayed coating and laser remelted coating were tested respectively, and the effect of laser remelting on erosion resistance of plasma sprayed Al2O3-40% TiO2 coating was studied. The results show that the layered structure of plasma sprayed Al2O3-40% TiO2 coating can be changed by the laser remelting. The γ-Al2O3 phase transforms into α-Al2O3, and the laser remelted coating exhibits a stable structure which consists of α-Al2O3 and TiAl2O5. A compact, uniform, highly hard and good metallurgical bonded Al2O3-40% TiO2 coating can be obtained. The erosion resistance of the plasma sprayed coating has been greatly improved by laser remelting, and the wear characteristics caused by the erosion sand particles are crack, crush and block desquamation.
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