A comparative study on high temperature oxidation behavior of SiC, SiC-BN and SiBCN monoliths. (November 2021)

• Record Type: Journal Article
• Authors: Zhang, Meng; Chen, Qingqing; He, Yunpeng; Hong, Yuzhe; Li, Daxin; Yang, Zhihua; Jia, Dechang; Cai, Delong; Niu, Zibo; Guan, Jingyi; Wang, Bingzhu
• Is Part Of: Corrosion science. Volume 192(2021)
• Publication Date: 2021-11
• Subjects: SiBCN -- SiC-BN -- SiC -- Oxidation behavior -- Oxidation mechanism; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2021.109855
• Languages: English
• ISSNs: 0010-938X

Abstract

Abstract: In this study, the oxidation behavior and mechanism of SiBCN monoliths were compared with SiC and SiC-BN monoliths. At 1100–1300 °C, the oxide layers of SiC and SiBCN monoliths were relatively smooth and dense, while that of SiC-BN monoliths were destroyed by many bubbles. Further oxidized at 1500 °C, some cracks and bubbles appeared on the surfaces and interfaces of SiC-BN monoliths. The oxidation of SiC phases was thermodynamically unstable than that of C and BN, but the oxidation of BN and/or C occurred preferentially after considering the kinetic factors. BN(C) phase has a positive role on SiBCN oxidation resistance. Data availability: The raw/processed data required to reproduce these findings cannot be shared at this time due to legal or ethical reasons. Highlights: At 1100–1300 °C, the oxide layer of SiC and SiBCN were smooth and dense, while that of SiC-BN were destroyed. Compared with SiC phases, the oxidation of BN and/or C occurred preferentially after considering the kinetic factors. BN(C) phase has a positive role on SiBCN oxidation resistance.