Journal
CERAMICS INTERNATIONAL
Volume 48, Issue 11, Pages 16357-16363Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2022.02.186
Keywords
Ti3AlC2 powders; High purity; Microwave heating; Molten salt
Categories
Funding
- National Natural Science Foundation of China [51872210, 52072274]
- Program of Hubei Province, China [T201602, 2017CFA004]
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In this study, high purity Ti3AlC2 powders were successfully prepared using microwave-assisted molten salt method. The synthesis temperature and holding time of highly pure Ti3AlC2 powders were relatively milder compared to traditional methods. This efficient synthesis approach can be attributed to the synergistic effect of molten salt and microwave heating. The findings have significant implications for the rapid synthesis of high purity Ti3AlC2 powders.
In this work, Ti3AlC2 powders with high purity were prepared by microwave-assisted molten salt method (MAMS). The synthesis parameters (such as raw materials ratio, heating temperature and reactant materials) and the formation mechanisms were systematically investigated. The results indicate that Ti3AlC2 powders with a high purity up to 98.5% are prepared using TiH2/Al/1.8TiC mixture as reactant materials, and NaCl-KCl as molten salt by microwave-assisted heating at 1050 degrees C for 30 min. Compared with traditional heating methods, both the synthesis temperature and holding time of highly pure Ti3AlC2 powders synthesized in this work are much milder. This high-efficiency synthesis approach could be ascribed to the synergistic effect of molten salt and microwave heating. Moreover, the TiH2-Al-TiC starting material is more suitable for the rapid synthesis of Ti3AlC2 powders with high purity via present microwave-assisted molten salt method than that TiH2-Al-C.
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