高能球磨对WC-NiMoCrFeCo复合粉末机械合金化的影响  

Influence of High-energy Milling on Mechanical Alloying of WC-NiMoCrFeCo Composite Powder

作　　者：林丽丽 杨谨赫 杜开平 皮自强 郑兆然 陈星 LIN Lili;YANG Jinhe;DU Kaiping;PI Ziqiang;ZHENG Zhaoran;CHEN Xing(Jiangxi Piaotang Tungsten Industry Co.,Ltd.,Ganzhou 341516,Jiangxi,China;BGRIMM Technology Group,Beijing 100160,China;BGRIMM Advanced Materials Science&Technology Co.,Ltd.,Beijing 102206,China)

机构地区：[1]江西漂塘钨业有限公司,江西赣州341516 [2]矿冶科技集团有限公司,北京100160 [3]北矿新材科技有限公司,北京102206

出　　处：《热喷涂技术》2024年第3期22-27,54,共7页Thermal Spray Technology

基　　金：江西钨业控股集团有限公司重大科技专项(JWGF-21ZD-01)。

摘　　要：为探讨高能球磨对WC-NiMoCrFeCo复合粉末机械合金化过程及超音速火焰喷涂WC-NiMoCrFeCo涂层耐蚀性能的影响,系统研究了球磨时间和球磨转速对Ni、Cr、Fe在复合粉末中分布均匀性的影响。结果表明,适当的球磨条件能显著改善粉末的均匀性,当球磨时间为2 h,球磨罐自转速度为350 r min时,所得复合粉末具有最佳的均匀性。此外,与传统的WC-12Co涂层相比,超音速火焰喷涂的WC-NiMoCrFeCo涂层展现出更优异的耐酸性腐蚀性能。本研究为提升热喷涂金属陶瓷涂层的耐蚀性能提供了新的思路和试验依据。In order to explore the influence of high-energy ball milling on the mechanical alloying process of WC-NiMoCrFeCo composite powder and the corrosion resistance of HVOF WC-NiMoCrFeCo coatings,the effects of ball milling time and speed on the distribution uniformity of Ni,Cr and Fe in composite powder were systematically studied.It is found that the uniformity of powder can be improved significantly under proper milling conditions.The experimental results show that when the milling time reaches two hours and the rotation speed of the ball milling is 350 r min,the composite powder has the best homogeneity.In addition,compared with the traditional WC-12Co coating,the supersonic flame sprayed WC-NiMoCrFeCo coating shows better acid corrosion resistance.This study provides a new idea and experimental basis for improving the corrosion resistance of thermal sprayed cermet coatings.

关 键 词：超音速火焰喷涂 金属陶瓷材料 WC-NiMoCrFeCo 高能球磨 

分 类 号：TG174.442[金属学及工艺—金属表面处理]