Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7888215 | Ceramics International | 2018 | 7 Pages |
Abstract
(Mo0.97Nb0.03)(Si0.97Al0.03)2 ceramic was synthesized by self-propagating high-temperature synthesis using commercial elemental powders, and then dense monolithic ceramic was prepared via vacuum hot pressing. The oxidation behavior of the bulk ceramic was investigated at 500 °C and 1200 °C. At 500 °C, due to the preferential oxidation of Nb-rich phase and the formation of uniform oxidation layer, the oxidation rate of (Mo0.97Nb0.03)(Si0.97Al0.03)2 is lower than pure MoSi2. At 1200 °C, (Mo0.97Nb0.03)(Si0.97Al0.03)2 shows better oxidation resistance than MoSi2, owing to the uniform complex oxide layer with SiO2, Al2O3 and Nb2O5 formed on the surface of the prepared ceramic.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Gaoming Zhu, Xingliang Xiao, Xiaohong Wang, Darvaish Khan, Qiong Lu, Peizhong Feng,