Synthesis and ultra-high temperature ablation behavior of a ZrC/Cr2AlC composite. Issue 5 (April 2016)

• Record Type: Journal Article
• Authors: Li, Haolin; Li, Shibo; Zhang, Linquan; Zhou, Yang
• Is Part Of: Ceramics international. Volume 42: Issue 5 (2016)
• Page Start: 5686
• Page End: 5692
• Publication Date: 2016-04
• Subjects: A. Hot pressing -- C. Mechanical properties -- D. Carbides -- Microstructure -- High temperature ablation; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2015.12.095
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: This work reports on the fabrication and high temperature ablation property of a new ZrC/Cr2 AlC composite. The ZrC/Cr2 AlC composite was obtained by hot pressing a mixture of 15 vol% ZrC and 85 vol% Cr2 AlC powders at 1300 °C with 20 MPa for 1 h in Ar atmosphere. The composite had a flexural strength of 622 MPa, higher than 400 MPa for Cr2 AlC. The high temperature ablation behavior of the composite was investigated using the oxyacetylene torch ablation test. During oxyacetylene torch testing, the composite underwent a series of thermal decomposition and oxidation. Microstructure and composition of the synthesized composite before and after the ablation test were characterized with scanning electron microscopy and X-ray diffractometry techniques.