|
|
|
| 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.
|
|
Received: 17 September 2014
Published: 29 April 2015
|
|
|
|
| [1] A.Malek, B.Projjal. Mechanochemical synthesis of nanostructured titanium carbide from industrial Fe-Ti[J]. Journal of Alloys and Compounds , 2010,491:581-583.[2] J.Wang, Y.S.Wang, Y.C.Ding. Production of (Ti,V)C reinforced Fe matrix composites[J]. Materials Science and Engineering A, 2007, 454-455:75-79.[3]李艳，郭志猛，郝俊杰，等．金属粉末凝胶注模成形技术的研究现状及应用前景[J]．粉末冶金工业，2006，16(5)：34-37 [4] J.L.Yang, J.L.Yu, Y.Huang. Recent developments in gelcasting of ceramics[J]. Journal of the European Ceramic Society, 2011,312569-2591.[5] Y.Li, Z.M.Guo, J.J.Hao. Gelcasting of 316L Stainless Steel[J]. Journal of University of Science and Technology Beijing, 2007,14(6):507-511[6] Y.Li, Z.M.Guo, J.J.Hao, et al. Gelcasting of metal powders in nontoxic cellulose ethers system[J]. Journal of Materials Processing Technology, 2008, 208(1-3):457-462.[7] K.Cai, Y.Huang, J.L.Yang. Alumina gelcasting by using HEMA system[J]. Journal of the European Ceramic Society, 2005,25(7):1089-1093. |
|
|
|
2015, Vol. 25 
