Fast seamless joining of SiCw/Ti3SiC2 composite using electric field-assisted sintering technique |
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| Authors: | Xiaobing Zhou Lin-Kun Shi Shunrui Zou Jie Xu Yihe Liu Peter Tatarko |
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| Affiliation: | 1. Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, China;2. Institute of Inorganic Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia |
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| Abstract: | A pair of Ti3SiC2 reinforced with SiC whiskers (SiCw/Ti3SiC2) composites was successfully joined without any joining materials using electric field-assisted sintering technology at a temperature as low as 1090°C (Ti) and a short time of 30 s. The microstructure and mechanical properties of the obtained SiCw/Ti3SiC2 joints were investigated. The solid-state diffusion was the main joining mechanism, which was facilitated by a relatively high current density (~586 A/cm2) at the joining interface. The shear strength of the sample joined at 1090°C was 51.8 ± 2.9 MPa. The sample joined at 1090°C failed in the matrix rather than at the interface, which confirmed that a sound inter-diffusion bonding was obtained. A rapid and high efficient self-joining process may find application in the case of SiCw/Ti3SiC2 sealing cladding tube and end cap. |
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| Keywords: | field-assisted sintering technology joining MAX phases SiC Ti3SiC2 |
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