原位合成的钛合金@CNTs粉体SPS制备TiC/Ti复合材料的微结构与性能

doi:10.11896/cldb.22120175

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Abstract Carbon nanotubes (CNTs) coated titanium alloy (Ti alloy@CNTs) composite powders were synthesized by in-situ plasma enhanced chemical vapor deposition (PECVD) via Fe/Ni catalyst. The produced composite powders were consolidated via spark plasma sintering (SPS) to fabricate the TiC and CNTs reinforced Ti matrix composites. The microstructure and composition of titanium alloy @ CNTs powder were analyzed by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Raman spectroscopy. The microstructure, phase composition and mechanical properties of the composites were characterized by SEM, XRD, Raman spectroscopy, nano indentation. On this basis, the factors influencing the structure of carbon nanotubes in-situ synthesized by PECVD, including the catalyst concentration and reaction time, were investigated. In addition, the mechanism of the formation of the microstructure of the composite during sintering were discussed and the mechanism of in-situ TiC formation by the reaction of CNTs with Ti matrix. The result indicate that in-situ TiC formation is mainly affected by the crystallinity of CNTs and SPS temperature.

Key words： carbon nanotubes in-situ synthesized titanium matrix composite microstructure mechanical property

Published: 10 May 2024 Online: 2024-05-13

CLC number:

TG14

Fund:National Natural Science Foundation of China (52075544).

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	Articles by authors
	BAI Yunguan
	JI Xiaochao
	LI Haiqing
	WEI Min
	YU Helong
	ZHANG Wei

Cite this article:

BAI Yunguan,JI Xiaochao,LI Haiqing, et al. Microstructure and Mechanical Properties of TiC/Ti Composites Fabricated from In-situ Synthesized Ti Alloy@CNTs Powder by SPS[J]. Materials Reports, 2024, 38(9): 22120175-7.

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http://www.mater-rep.com/EN/10.11896/cldb.22120175 OR http://www.mater-rep.com/EN/Y2024/V38/I9/22120175

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