坯体成形工艺对烧结制备超细晶WC-12Co硬质合金组织和力学性能的影响

王超, 王海滨, 玄拾雷, 刘轩, 刘雪梅, 宋晓艳

Effects of Powder Molding Process on the Microstructure and Mechanical Properties of As-Sintered Ultrafine- Grained WC-12Co Cemented Carbides

WANG Chao, WANG Haibin, XUAN Shilei, LIU Xuan, LIU Xuemei, SONG Xiaoyan

表1 PEG质量分数为1.5%时不同浓度PEG溶液成形坯体烧结制备WC-12Co硬质合金试样Co黏结相的成分分析 (mass fraction / %)

Table 1 EDS analysis results of the Co binder phase in the sintered WC-12Co cemented carbides at PEG content of 1.5% with different PEG solution concentrations

Position in Figs.11a and 12a W Co C Cr P1 17.78 77.16 0.11 4.94 P2 20.52 75.23 0.00 4.25 P3 22.90 72.17 0.40 4.53 P4 11.37 83.26 0.33 5.04 P5 11.49 81.77 1.34 5.40 P6 11.85 82.60 0.35 5.20