Plasma preparation and low-temperature sintering of spherical TiC –Fe composite powder
来源期刊：International Journal of Minerals Metallurgy and Materials2015年第12期
论文作者：Jian-jun Wang Jun-jie Hao Zhi-meng Guo Song Wang
文章页码：1328 - 1333
摘 要：A spherical Fe matrix composite powder containing a high volume fraction（82vol%） of fine TiC reinforcement was produced using a novel process combining in situ synthesis and plasma techniques. The composite powder exhibited good sphericity and a dense structure, and the fine sub-micron TiC particles were homogeneously distributed in the α-Fe matrix. A TiC –Fe cermet was prepared from the as-prepared spherical composite powder using powder metallurgy at a low sintering temperature; the product exhibited a hardness of HRA 88.5 and a flexural strength of 1360 MPa. The grain size of the fine-grained TiC and special surface structure of the spherical powder played the key roles in the fabrication process.
Jian-jun Wang1,2，Jun-jie Hao1，Zhi-meng Guo1，Song Wang1
1. Institute for Advanced Materials and Technology, University of Science and Technology Beijing2. Research and Development Center, CSR Qingdao Sifang Co., Ltd.
摘 要：A spherical Fe matrix composite powder containing a high volume fraction（82vol%） of fine TiC reinforcement was produced using a novel process combining in situ synthesis and plasma techniques. The composite powder exhibited good sphericity and a dense structure, and the fine sub-micron TiC particles were homogeneously distributed in the α-Fe matrix. A TiC –Fe cermet was prepared from the as-prepared spherical composite powder using powder metallurgy at a low sintering temperature; the product exhibited a hardness of HRA 88.5 and a flexural strength of 1360 MPa. The grain size of the fine-grained TiC and special surface structure of the spherical powder played the key roles in the fabrication process.
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