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Effect of Palygorskite on Wear Performance of Mo_2FeB_2

SHI Hai-fang,GAO Shi-xi,LI Zhi-chao(Institute of Materials Processing and Surface Technology,Liaoning Technical University,Fuxin 123000,China)  
Spraying feeding powder was produced through adding palygorskite.Ternary boride ceramic coating containing palygorskite was prepared by thermochemical reactive thermal spaying on Q235 steel substrate.The microstructure of coating was observed,and the wear-resistance performance of coating was tested.The influence of palygorskite on microstructure and wear-resistance of ternary boride ceramic coating was analyzed.The results show that coating become compact and anti-friction because of adding palygorskite.When the adding dosage of palygorskite is 2% of the total aggregate quality,the abrasion resistance of coating has increased 4 times averagely than the coating without palygorskite.
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