Article ID Journal Published Year Pages File Type
5458269 Journal of Alloys and Compounds 2017 6 Pages PDF
Abstract
zirconium oxycarbide (ZrCxOy) ceramics were hot pressed using ZrC-5ZrO2 and ZrC-5ZrO2-5Zr (number in mol%) mixtures as starting powders, and the solid solution and densification processes were investigated. When 5 mol% ZrO2 were added to ZrC matrix, ZrCxOy and CO were formed during the reaction between ZrC and ZrO2 occurred above 1600 °C. And the sintered ZrCxOy ceramic had numerous pores. However, the co-doping of ZrO2 and Zr could reduce the reaction temperatures and CO amounts in ZrC-5ZrO2-5Zr system, resulting in a near fully dense ZrCxOy ceramic. The chemical composition of obtained ZrCxOy ceramics were also calculated according to oxygen content and reaction processes.
Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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