采用料浆法在已制得SiC内涂层炭/炭(C/C)复合材料(SiC-C/C)表面,制备了不同Cr含量(质量分数分别为0%,31.85%,44.95%及55.57%)的Al-Si合金涂层.分别采用X射线衍射法(XRD)、扫描电子显微镜(SEM)及1773 K静态空气气氛中的恒温氧化试验,测试了所得涂层试样的微观结构及抗氧化性能.结果表明:Cr元素可以显著提高Al-Si合金涂层的抗氧化性能;Cr含量为44.95%的Al-Si合金涂层SiC-C/C复合材料试样在1773 K空气气氛中氧化197 h后的氧化增重为0.079%(质量分数).
Al-Si alloy coatings containing different contents of Cr from 31.85 wt% to 55.57 wt% for SiC coated carbon-carbon composites (SiC-C/C) were prepared by a slurry method. The structures and oxidation resistances of the as-prepared coatings were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and isothermal oxidation test at 1773 K in air, respectively. The results show that Cr can improve the oxidation resistance of Al-Si coating, and the Al-Si coating containing 44.95 wt% Cr could protect SiC-C/C from oxidation for 197 h with a mass gain of 0.079 wt%.
参考文献
| [1] | Buckley J D .[J].Ceramic Bulletin,1988,67(02):364. |
| [2] | Joshi A;Lee J S .[J].Composites Part A:Applied Science and Manufacturing,1997,28:181. |
| [3] | Huang Jianfeng;Li Hejun;Zeng Xierong et al.[J].Surface and Coatings Technology,2006,200:5379. |
| [4] | Smeacetto F;Ferraris M .[J].Carbon,2002,40:583. |
| [5] | Fu Qiangang;Li Hejun;Shi Xiaohong et al.[J].Scripta Materialia,2005,52:923. |
| [6] | Huang Jian-Feng;Zeng Xie-Rong;Li He-Jun;Xiong Xin-Bo;Fu Ye-Wei .Influence of the preparation temperature on the phase,microstructure and anti-oxidation property of a SiC coating for C/C composites[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(8/9):1517-1521. |
| [7] | Strife J R .[J].Composites AD,1991,25(01):121. |
| [8] | Xiong Huaping;Mao Wei;Xie Yonghui et al.[J].Acta Materialia,2004,52:2605. |
| [9] | Fox-Rabinovicha G S;Weatherlya G C;Wilkinsona D S et al.[J].Intermetallics,2004,12:165. |
| [10] | Yin Xiaowei;Cheng Laifei;Zhang Litong et al.[J].Materials Science and Engineering A,2000,290:89. |
| [11] | Wang H M;Duan G .[J].Intermetallics,2003,11:755. |
| [12] | Wu T M;Wu Y R .[J].Journal of Materials Science,1994,29:1260. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%