Research of parameters on the effect of CoCr alloys pherical powders produced
by RF plasma
LU Chao1，XIAO Mengzhi1，QU Yuebo1，2，WEI Xiaohong2，LIU Ruijun2，
ZHANG Ruihua1，2
1Central Iron and Steel Research Institute，Beijing 100081，China；2Hard-ware Knife Cut Industrial
Technology Research Institute of Yangjiang，Yangjiang 529533，China
Abstract：In this paper，the plasma spheroidization technology was used for the surface-treatment of cobalt-chromium
alloy powders which were used in selective laser melting additive manufacturing process. The results show
that powders with good sphericity and surface morphology can be obtained under the optimized spheroidization
process parameters.There is little change of the microstructure before and after spheroidization，mainly cellular
crystal，and the dendritic structure increases with the increases of powder particle size. Laser particle size analyzer
shows that the particle size of cobalt-chromium alloy powder increases after plasma spheroidization，mainly due to
the evaporation of fine powders.This experiment is helpful to solve the recycling problem of selective laser melting
powder materials.
路超，肖梦智，屈岳波，魏小红，刘瑞君，张瑞华. 射频等离子球化制备球形钴铬合金粉末工艺研究[J]. 粉末冶金工业, 2020, 30(06): 8-14.
LU Chao，XIAO Mengzhi，QU Yuebo，WEI Xiaohong，LIU Ruijun，
ZHANG Ruihua. Research of parameters on the effect of CoCr alloys pherical powders produced
by RF plasma. Powder Metallurgy Industry, 2020, 30(06): 8-14.
2020, Vol. 30 
