Effect mechanism of mono-particles or hybrid-particles on the thermophysical characteristics and mechanical properties of Cu matrix composites. Issue 16 (15th August 2022)

• Record Type: Journal Article
• Authors: Yan, Yi-Fan; Kou, Shu-Qing; Yang, Hong-Yu; Shu, Shi-Li; Lu, Jian-Bang
• Is Part Of: Ceramics international. Volume 48:Issue 16(2022)
• Page Start: 23033
• Page End: 23043
• Publication Date: 2022-08-15
• Subjects: Ceramic/metal composites -- Mono-particles -- Hybrid-particles -- Thermal and mechanical characteristics -- Finite element modeling; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.04.281
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The nature of ceramic particles plays a decisive role in the performance of the ceramic/metal composites. This work is designed to deeply analyze the effect of mono-particles and hybrid-particles on the thermal and mechanical characteristics of the composites by means of experiment and finite element analysis. The in-situ TiB2 /Cu and (TiC + TiB2 )/Cu composites were fabricated by reactive hot pressing in Cu–Ti–B and Cu–Ti–B4 C reaction systems. The two kinds of composites have similar coefficient of thermal expansion, while the (TiC + TiB2 )/Cu composite demonstrates higher thermal conductivity and better compression properties than the TiB2 /Cu composite. Simulations suggest that the spherical TiC particles in the (TiC + TiB2 )/Cu composite optimize the heat transfer path and improve the stress distribution and plastic deformation, which are the main reasons for the difference in composite properties. Besides, the TiB2 /Cu composite demonstrates excellent wear resistance due to the pinning effect of the hexagonal columnar particles. This would help deepen the understanding of the strengthening mechanism of mono-particles or hybrid-particles ceramic reinforced metal matrix composites and have a significant guiding role in the microstructure design and synergy optimization of composite.