Physical, mechanical, and ablation properties of Cu–Ti3AlC2 composites with various Ti3AlC2 contents. Issue 6 (13th April 2018)

• Record Type: Journal Article
• Authors: Huang, Xiaochen; Feng, Yi; Qian, Gang; Zhao, Hao; Zhang, Jingcheng; Zhang, Xuebin
• Is Part Of: Materials science and technology. Volume 34:Issue 6(2018)
• Page Start: 757
• Page End: 762
• Publication Date: 2018-04-13
• Subjects: Composite materials -- Cu–Ti3AlC2 -- arc erosion -- FE-SEM -- Raman; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1080/02670836.2017.1407900
• Languages: English
• ISSNs: 0267-0836

Abstract

ABSTRACT: The effects of Ti3 AlC2 content on the physical, mechanical, and arc ablation resistance properties of a fabricated Cu–Ti3 AlC2 composite are investigated in detail. Composite samples containing 10, 15, 20, 25, 30, and 35 vol.-% Ti3 AlC2 are sintered at 800°C without decomposition of Ti3 AlC2 . It is demonstrated that with increasing Ti3 AlC2 content, the relative density, electrical conductivity, and flexural strength of Cu–Ti3 AlC2 decrease but the Brinell hardness first increases and then decreases. After eroded by an electric arc, Cu–Ti3 AlC2 oxidises to CuO, TiO2, and Al2 O3 . Meanwhile, field emission-SEM observations reveal that the dimensions of protrusions and the percentage of TiO2 increase with increasing Ti3 AlC2 content. Remarkably, the electric arc mainly occurs at the Ti3 AlC2 particles, and the Cu matrix remains well protected.