为改善ZrB2-SiC基超高温陶瓷的抗氧化和抗烧蚀性能,在制备过程中加入Y2O3.用氧乙炔火焰法来考察ZrB2-SiC-Y2O3的抗氧化和抗烧蚀性能.采用SEM和XRD分析烧蚀前后形貌及物相.材料在加热和冷却过程中没有出现开裂现象,说明其具有良好的抗热冲击性能.微观组织分析表明,氧化层主要由4层组成,且氧化层与基体层没有明显的剥离.结果表明:Y2O3的添加可以将氧化产物中的高温稳定相稳定到室温,减少由于相变发生的体积膨胀,改善氧化层与基体层的粘结性能.
参考文献
| [1] | Opeka MM;Talmy IG;Zaykoski JA .Oxidation-based materials selection for 2000 degrees C plus hypersonic aerosurfaces: Theoretical considerations and historical experience[J].Journal of Materials Science,2004(19):5887-5904. |
| [2] | Han J C;Hu P;Zhang X H et al.[J].Scripta Materialia,2007,57:825. |
| [3] | Wen-Wen Wu;Guo-Jun Zhang;Yan-Mei Kan .Reactive Hot Pressing of ZrB_2-SiC-ZrC Ultra High-Temperature Ceramics at 1800 deg C[J].Journal of the American Ceramic Society,2006(9):2967-2969. |
| [4] | Levine S R;Opila E J;Halbig M C et al.[J].Journal of the European Ceramic Society,2002,22(14-15):2757. |
| [5] | William G. Fahrenholtz;Gregory E. Hilmas;Inna G. Talmy;James A. Zaykoski .Refractory Diborides of Zirconium and Hafnium[J].Journal of the American Ceramic Society,2007(5):1347-1364. |
| [6] | Karlsdottirw S N;Halloran J W .[J].Journal of the American Ceramic Society,2007,90:3233. |
| [7] | Chamberlain A L;Fahrenholtz W G;Hilmas G E .[J].Refract Appl Trans,2005,1(02):1. |
| [8] | Zhang X H;Hu P;Han J C et al.[J].Scripta Materialia,2007,57:1036. |
| [9] | Monteverde F;Bellosi A .[J].Solid State Sciences,2005,7:622. |
| [10] | 翁凌,张幸红,韩文波.烧结助剂对HfB2-SiC基超高温陶瓷组织和性能的影响研究[J].稀有金属材料与工程,2007(z2):16-19. |
| [11] | Li X Y;Han J C;Zhang X H et al.[J].Key Engineering Materials,2008,368-372(05):1740. |
| [12] | F. Monteverde;A. Bellosi .Oxidation of ZrB_2-Based Ceramics in Dry Air[J].Journal of the Electrochemical Society,2003(11):B552-B559. |
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