Gelcasting and vacuum sintering process of TiC/Fe steel bonded carbide
SHI Yong-liang1, GUO Zhi-meng2, LI Xiu-min1, YANG Xiao-cai1, QI Cui-fen1
1. Department of Materials Engineering, Hebei College of Industry and Technology, Shijiazhuang 050091, China 2. Institute for Advanced Materials & Technology, University of Science and Technology Beijing, Beijing 100083, China
Abstract：Gelcasting in methylbenzene/HEMA system was successfully employed to manufacture TiC/Fe cemented carbide with complex shape. The effects of monomer content on the structure, density and strength of green and sintered body were analyzed. The results show that the monomer content is the key factor in TiC/Fe gelcasting process. The optimum monomer (HEMA) content is 4.6% (based on the mass of powder). With the optimum monomer content, the green strength is 28 MPa. When vacuum sintered at 1 420 ℃ for 1 h, the transverse rupture strength, density and hardness of specimens are 1 410 MPa, 6.46 g/cm3 and 50 HRC, respectively. The transverse rupture strength and hardness reach 1 670 MPa and 65 HRC after heat treatment.
石永亮，郭志猛，李秀敏，杨晓彩，戚翠芬. 凝胶注模-真空烧结制备TiC/Fe基钢结硬质合金[J]. , 2015, 25(02): 20-24.
SHI Yong-liang, GUO Zhi-meng, LI Xiu-min, YANG Xiao-cai, QI Cui-fen. Gelcasting and vacuum sintering process of TiC/Fe steel bonded carbide. , 2015, 25(02): 20-24.
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2015, Vol. 25 
