Controlling the sizes of in-situ TiC nanoparticles for high-performance TiC/Al–Cu nanocomposites. Issue 20 (15th October 2021)

• Record Type: Journal Article
• Authors: Gao, Yu-Yang; Qiu, Feng; Zou, Qian; Chu, Jian-Ge; Dong, Bai-Xin; Han, Xue; Yang, Hong-Yu; Jiang, Bin; Jiang, Qi-Chuan
• Is Part Of: Ceramics international. Volume 47:Issue 20(2021)
• Page Start: 28584
• Page End: 28595
• Publication Date: 2021-10-15
• Subjects: In-situ TiC nanoparticles -- Carbon sources -- Al nanocomposites; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.07.017
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: TiC/Al–Cu nanocomposites were fabricated in Al–Ti–C powder systems using carbon black, a mixture of C and carbon nanotubes (C + CNTs), and CNTs via an in-situ method involving combustion synthesis and hot pressing. As the carbon source changed from pure carbon black to the C + CNT mixture and pure CNTs, the size of the TiC nanoparticles decreased gradually. The nanocomposites synthesized based on the C + CNT mixture exhibited the most uniform dispersion of TiC nanoparticles. The 30 vol% TiC/Al–Cu nanocomposite prepared from the C + CNT mixture had the best comprehensive mechanical properties (yield strength (411 MPa), compressive strength (712 MPa), fracture strain (17.2%), hardness (206.8 HV), and wear resistance under the experimental conditions due to having the most uniformly dispersed TiC nanoparticles. The wear mechanism was a combination of plastic deformation, abrasion, and adhesion. This method may be a low-cost and convenient means to control the sizes of in-situ TiC nanoparticles and prepare high-performance TiC/Al–Cu nanocomposites.