A Novel Approach of Using Ground CNTs as the Carbon Source to Fabricate Uniformly Distributed Nano-Sized TiCx/2009Al Composites

Materials

Lei Wang²  Feng Qiu²  Licheng Ouyang²  Huiyuan Wang²  Min Zha²  Shili Shu¹  Qinglong Zhao²  Qichuan Jiang² 

[1] State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130012, China;Key Laboratory of Automobile Materials, Ministry of Education, and Department of Materials Science and Engineering, Jilin University, No. 5988 Renmin Street, Changchun 130025, China;

关键词: Al composites;    combustion synthesis;    nano-sized TiC_x;    distribution;    tensile properties;   

DOI  :  10.3390/ma8125495

来源: mdpi

【 摘 要 】

Nano-sized TiC_x/2009Al composites (with 5, 7, and 9 vol% TiC_x) were fabricated via the combustion synthesis of the 2009Al-Ti-CNTs system combined with vacuum hot pressing followed by hot extrusion. In the present study, CNTs were used as the carbon source to synthesize nano-sized TiC_x particles. An attempt was made to correlate the effect of ground CNTs by milling and the distribution of synthesized nano-sized TiC_x particles in 2009Al as well as the tensile properties of nano-sized TiC_x/2009Al composites. Microstructure analysis showed that when ground CNTs were used, the synthesized nano-sized TiC_x particles dispersed more uniformly in the 2009Al matrix. Moreover, when 2 h-milled CNTs were used, the 5, 7, and 9 vol% nano-sized TiC_x/2009Al composites had the highest tensile properties, especially, the 9 vol% nano-sized TiC_x/2009Al composites. The results offered a new approach to improve the distribution of in situ nano-sized TiC_x particles and tensile properties of composites.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.