Microstructure and properties of nano-TiN modified Ti（C,N）-based cermets fabricated by powder injection molding and die pressing

Powder injection molding （PIM） and die pressing were employed to fabricate nano-TiN modified Ti（C,N）- based cermets. The shrinkage behavior, microstructure, porosity, and mechanical properties of the samples with and without nano-TiN addition fabricated by PIM and die pressing were analyzed. It is d...

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Bibliographic Details
Published in:矿物冶金与材料学报：英文版 2013, Vol.20 (11), p.1115-1121
Main Author: Shan-jie Yi Hai-qing Yini Ke Chen Dil-Faraz Khan Qing-jun Zheng Xuan-hui Qui
Format: Article
Language:English
Subjects:
改性
机械性能
模压
注塑
粉末注射成型
纳米TiN
组织和性能
金属陶瓷
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Summary:Powder injection molding （PIM） and die pressing were employed to fabricate nano-TiN modified Ti（C,N）- based cermets. The shrinkage behavior, microstructure, porosity, and mechanical properties of the samples with and without nano-TiN addition fabricated by PIM and die pressing were analyzed. It is demonstrated that for either PIM or die pressing, the porosities are obviously reduced, the mechanical properties are significantly improved after adding nano-TiN, and the hard particles are refined; the rim phase thickness obviously becomes thinner, and the number of dimples in fracture also increases. Compared the samples fabricated by die pressing, it is difficult for PIM to obtain dense Ti（C,N）-based cermets. Due to the too much existence of pores and isolated carbon, the mechanical properties of the sintered samples by PIM are inferior to those of the sintered ones by die pressing.
ISSN:1674-4799
1869-103X