Journal
CERAMICS INTERNATIONAL
Volume 48, Issue 12, Pages 17086-17094Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2022.02.264
Keywords
SiBCO ceramics; Polymer-derived ceramics; Microstructure evolution; Cost-effective
Categories
Funding
- National Natural Science Foundation of China [91860204, 2017A-28-3315]
- Dalian University of Technology 2019 Discipline Platform Fund [1000-82212201]
- National Key Research and Development Program [2018YFB1107500]
- Transformational Technologies for Clean Energy and Demonstration
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA21010205]
- National Young Talents Program of China
- The Ningbo 3315 Plan Innovation Team [52075526]
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This article investigates the effect of carbon content in SiBCO polymer precursors. It is found that carbon contributes to the formation of graphitic carbon and has a significant impact on the microstructure evolution of ceramics.
The composition of polymer derived ceramics could be readily tuned through controlling the structure and element content of the polymer precursors, and investigation on the effect of the element on microstructure evolution is important to the design of advanced ceramics. In this article, the effect of carbon content in SiBCO polymer precursors was systematically investigated. The polymer network and thermal stability of polymer precursors and the carbon content of pyrolyzed SiBCO ceramic could be readily tuned by controlling the DVB amount used. Carbon contributed to the formation of graphitic carbon in SiBCxO ceramics and inhibited the growth of beta-SiC and SiO2 crystals at 1600 degrees C, but lead to an increase in the graphitic carbon phase at 1800 degrees C.
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