| Effect of sintering temperature on the preparation
of Cu–Ti3SiC2 metal matrix composite |
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| 作者姓名： | Tungwai L. Ngai Wei Zheng Yuanyuan Li |
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| 作者单位： | National Engineering Research Center of Near-net-shape Forming Technology for Metallic Materials,South China University of Technology |
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| 基金项目： | supported by the National Natural ScienceFoundation of China (Grant no. 51074077) |
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| 摘 要： | Ti3SiC2 has the potential to replace graphite as reinforcing particles in Cu matrix composites for applications in brush,electrical contacts and electrode materials.In this paper the fabrication of Cu-Ti3SiC2 metal matrix composites prepared by warm compaction powder metallurgy forming and spark plasma sintering(SPS) was studied.The stability of Ti3SiC2 at different sintering temperatures was also studied.The present experimental results indicate that the reinforcing particles in Cu-Ti3SiC2 composites are not stable at and above 800℃.The decomposition of Ti3SiC2 will lead to the formation of TiC and/or other carbides and TiSi2.If purity is the major concern,the processing and servicing temperatures of the Cu-Ti3SiC2 composite should be limited to 750℃ or lower.The composites prepared by warm compaction forming and SPS sintering at 750℃ have lower density when compared with the composites prepared by SPS sintering at 950℃,but their electrical resistivity values are very close to each other and even lower.
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| 关 键 词： | Warm compaction Spark plasma sintering Electrical conductivity Mechanical property Impurity |
| 收稿时间： | 4 August 2012 |
Effect of sintering temperature on the preparation of Cu-Ti3 SiC2 metal matrix composite |
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| Tungwai L. Ngai,Wei Zheng,Yuanyuan Li.Effect of sintering temperature on the preparation of Cu-Ti3 SiC2 metal matrix composite[J].Progress in Natural Science,2013,23(1):70-76. |
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| Authors: | Tungwai L Ngai Wei Zheng and Yuanyuan Li |
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| Institution: | National Engineering Research Center of Near-net-shape Forming Technology for Metallic Materials, South China University
of Technology, Guangzhou 510640, China;National Engineering Research Center of Near-net-shape Forming Technology for Metallic Materials, South China University
of Technology, Guangzhou 510641, China;National Engineering Research Center of Near-net-shape Forming Technology for Metallic Materials, South China University
of Technology, Guangzhou 510642, China |
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| Abstract: | Ti3SiC2 has the potential to replace graphite as reinforcing particles in Cu matrix composites for applications in brush, electrical contacts and electrode materials. In this paper the fabrication of Cu–Ti3SiC2 metal matrix composites prepared by warm compaction powder metallurgy forming and spark plasma sintering (SPS) was studied. The stability of Ti3SiC2 at different sintering temperatures was also studied. The present experimental results indicate that the reinforcing particles in Cu–Ti3SiC2 composites are not stable at and above 800 °C. The decomposition of Ti3SiC2 will lead to the formation of TiC and/or other carbides and TiSi2. If purity is the major concern, the processing and servicing temperatures of the Cu–Ti3SiC2 composite should be limited to 750 °C or lower. The composites prepared by warm compaction forming and SPS sintering at 750 °C have lower density when compared with the composites prepared by SPS sintering at 950 °C, but their electrical resistivity values are very close to each other and even lower. |
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| Keywords: | Warm compaction Spark plasma sintering Electrical conductivity Mechanical property Impurity |
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