Effects of Sintering Process on the Properties of Ti₃SiC₂/Cu Composite

Abstract:

In this paper, a new type of Ti₃SiC₂/Cu composites with the volume fractions of 30% Ti₃SiC₂ particle was prepared by hot pressing and vacuum sintering respectively. The effects of sintering temperature and holding time on the density, resistance and Vickers hardness of Cu-30vol%Ti₃SiC₂ composite were investigated. The results show that the mechanical properties of the composites prepared by hot pressing are better than that prepared by vacuum sintering. The relative densities of Cu-30vol% Ti₃SiC₂ composites are rather high in suitable sintering conditions. It achieved 100% for the composites prepared by hot pressing at 930°C for 2h, and 98.4% for the composites prepared by vacuum sintering at 1250°C for 1h. At the same time, the maximum Vickers hardness reached 1735MPa at 900°C by hot pressing. The resistance and Vickers hardness of the composites decreased with an increase in sintering temperature, whereas the density increased. Scanning electron microscope (SEM) and energy-dispersive spectroscopy (EDS) were used to observe the microstructure of the composites. The relationship between microstructure and mechanical properties was discussed.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 377-381
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.377
• Online since: June 2012
• Authors: Jin Rong Lu, Yang Zhou, Yong Zheng, Shi Bo Li, Zhen Ying Huang, Hong Xiang Zhai
• Keywords: Cu-30vol.%Ti₃SiC₂ Composite, Property Analysis, Sintering

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