Oxidation Behaviors of C-ZrB_2-SiC Composite at 2100 ℃ in Air and O_2
文献类型：期刊论文
| 作者 | Zhang Zhongwei1; Nan Cewen1; Xu Jingjun2; Gao Zenghua2; Li Meishuan2; Wang Junshan3 |
| 刊名 | Journal of Materials Science & Technology
 |
| 出版日期 | 2014 |
| 卷号 | 30期号:12页码:1223-1229 |
| 关键词 | Graphite-based composite Ceramic particles Ultra-high temperature oxidation Oxide scale Oxidation mechanism |
| ISSN号 | 1005-0302 |
| 其他题名 | Oxidation Behaviors of C-ZrB_2-SiC Composite at 2100 ℃ in Air and O_2 |
| 英文摘要 | The oxidation behaviors of graphite and ZrB_2-SiC modified graphite composite were investigated at 2100 ℃ in 1×10~5 Pa air and 0.2×10~5 Pa O_2. The oxidation tests were conducted in an induction heating furnace. The oxidation of these two materials followed the linear rate law. The determined radius loss rates of graphite and C-ZrB_2-SiC at 2100 ℃ were 2.18×10~(-2) and 1.05×10~(-2) %/s in 1×10~5 Pa air, and 3.23×10~(-2) and 2.21×10~(-2) %/s in 0.2×10~5 Pa O_2, respectively. The incorporation of ZrB_2 and SiC decreased remarkably the oxidation rate of graphite because the oxide scale formed on the sample surface during oxidation helps in reducing the exposed surface area of the underneath substrate. In two different atmospheres with the same oxygen partial pressure, both graphite and C-ZrB_2-SiC experienced more severe oxidation at 2100 ℃ in 0.2×10~5 Pa O_2 than in 1×10~5 Pa air. The oxidation rate-controlling step for graphite and C-ZrB_2-SiC was proposed to be the inward diffusion of oxygen through the boundary layer and through the pores in the oxide scale, respectively. A model based on diffusion theory was established to discuss the effect of the total gas pressure on their oxidation behaviors. |
| 语种 | 英语 |
| CSCD记录号 | CSCD:5323567 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/152014]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 1.清华大学 2.中国科学院金属研究所 3.Science and Technology on Advanced Functional Composites Laboratory, Aerospace Research Institute of Materials and Processing Technology |
| 推荐引用方式 GB/T 7714 | Zhang Zhongwei,Nan Cewen,Xu Jingjun,et al. Oxidation Behaviors of C-ZrB_2-SiC Composite at 2100 ℃ in Air and O_2[J]. Journal of Materials Science & Technology,2014,30(12):1223-1229. |
| APA | Zhang Zhongwei,Nan Cewen,Xu Jingjun,Gao Zenghua,Li Meishuan,&Wang Junshan.(2014).Oxidation Behaviors of C-ZrB_2-SiC Composite at 2100 ℃ in Air and O_2.Journal of Materials Science & Technology,30(12),1223-1229. |
| MLA | Zhang Zhongwei,et al."Oxidation Behaviors of C-ZrB_2-SiC Composite at 2100 ℃ in Air and O_2".Journal of Materials Science & Technology 30.12(2014):1223-1229. |
入库方式： OAI收割
来源：金属研究所
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