Abstract: The WC-10Co-4Cr powders were prepared by using rapid agglomerate sintering method, and the coatings were sprayed onto steel substrate by high velocity oxygen fuel (HVOF) technology. A study was conducted with regard to the effects of sintering temperature on the WC-10Co-4Cr powders, as well as on the microstructure and wear resistance of WC-10Co-4Cr coatings. As suggested by the results, when the sintering temperature was raised from 1 250 ℃ to 1 450 ℃, the density of WC-10Co-4Cr powders increased, the average particle size of powders decreased, and the uniformity of them declined. With the increase of powder sintering temperature, the internal defects of the WC-10Co-4Cr coa-tings increase, leading to weakened wear resistance. In this case, the primary wear mechanism varied from the micro-cutting of the binder phase to delamination wear.
周维, 樊坤阳, 黄淙, 刘子京, 万维财, 贡太敏. 烧结温度对团聚高温快速烧结WC-10Co-4Cr粉末及其HVOF涂层性能的影响[J]. 材料导报, 2022, 36(6): 20120041-6.
ZHOU Wei, FAN Kunyang, HUANG Cong, LIU Zijing, WAN Weicai, GONG Taimin. Effect of Sintering Temperature on the Properties of Rapid Agglomerate Sintered WC-10Co-4Cr Powders and Its HVOF Coatings. Materials Reports, 2022, 36(6): 20120041-6.
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2022, Vol. 36 
