A Si-Al-Ir oxidation resistant coating was prepared for SiC coated carbon/carbon composites by slurry dipping.The phase composition, microstructure and oxidation resistance of the as-prepared Si-Al-Ir coating were studied by XRD (X-ray diffraction), SEM (scanning electron microscopy), and isothermal oxidation test at 1773 K in air, respectively.The surface of the as-prepared Si-Al-Ir coating was dense and the thickness was approximately 100/μm.Its anti-oxidation property was superior to that of the inner SiC coating.The weight loss of SiC/Si-Al-Ir coated carbon/carbon composites was less than 5 wt.pct after oxidation at 1773 K in air for 79 h.The local oxidation defects in the coating may result in the failure of the SiC/Si-Al-Ir coating.
参考文献
| [1] | G Savage.Carbon-carbon Composites[M].London:Chapman and Hall,1993:198-209. |
| [2] | J D Buckley .[J].American Ceramic Society Bulletin,1988,67(02):364. |
| [3] | J E Sheehan;K W Buesking;B J Sullivan .[J].Rev Mater Sci,1994,24:19. |
| [4] | H Hideki;M Shuichi;H Shuji .[J].Intermetallics,2000,8(9-11):1081. |
| [5] | Fang HT.;Jeon JH.;Zhu JC.;Yin ZD. .Inhibition of liquid Si infiltration into carbon-carbon composites by the addition of Al to the Si slurry pre-coating: mechanism analysis[J].Carbon: An International Journal Sponsored by the American Carbon Society,2002(14):2559-2565. |
| [6] | W L Worrell;K N Lee .[P].US 6127047,2000. |
| [7] | Q G Fu;H J Li;X H Shi;K Z Li and G D Sun .[J].Scripta Materialia,2005,52(09):923. |
| [8] | J F Huang;X R Zeng;H J Li;X B Xiong and M Huang .[J].CARBON,2004,42(8-9):1517. |
| [9] | D S Hou;K Z Li;H J Li;Q G Fu J Wei and Y L Zhang .[J].Journal of Materials Science and Technology,2007,23(04):559. |
| [10] | A Joshi;J S Lee .[J].Composites Part A:Applied Science and Manufacturing,1997,28(02):181. |
| [11] | Q G Fu;H J Li;K Z Li;X H Shi Z B Hu and M Huang .[J].Carbon,2006,44(09):1866. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%