利用自建的可控气氛感应加热超高温氧化装置研究了ZrC、ZrC-TaC颗粒增强石墨基复合材料在1900和2100℃下空气及0.2×103Pa的纯氧气中的氧化行为.结果表明,石墨以及颗粒增强石墨基复合材料的径向线度随氧化时间直线减小,在1900和2100℃下的氧化烧蚀速率:石墨为3.4和4.3 mm/s,C-ZrC为1.9和2.4 mm/s,C-ZrC-TaC为1.4和2.0 mm/s.添加增强相后使得石墨在1900和2100℃的空气中氧化540 s后烧蚀速率分别降低了60%和54%.在2100℃下,C-ZrC在0.2×103Pa O2中的氧化速率是其在空气中的2倍多.综合考虑材料的氧化动力学规律以及氧化温度、气氛的总压及氧分压的影响,提出了超高温氧化边界层扩散控制模型.
参考文献
[1] | Forsberg C W;Burchell T D;Willies D F.Carbon-carbon-composite salt-cooled electric space reactors[A].,2005:1-11. |
[2] | Buckley J D .Carbon-carbon,an overview[J].Ceramic Bulletin,1988,67:364-368. |
[3] | 李贺军.碳/碳复合材料在航空领域的应用研究现状[J].材料工程,1997(08):8. |
[4] | 蒋建纯,黄伯云,谭明福.碳/碳复合材料在高能刹车副中的应用[J].新型碳材料,1997(01):24-28. |
[5] | Pestchanyi S;Safronov V;Landman I .Estimation of carbon fibre composites as ITER divertor armour[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2004(0):697-701. |
[6] | 蒋建纯,黄伯云,谭明福.碳/碳复合材料在高能刹车副中的应用[J].新型碳材料,1997(01):24-28. |
[7] | Pestchanyi S;Safronov V;Landman I .Estimation of carbon fibre composites as ITER divertor armour[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2004(0):697-701. |
[8] | Wurz H.;Bazylev B.;Landman I.;Pestchanyi S.;Safronov V. .Macroscopic erosion of divertor and first wall armour in future tokamaks[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2002(Pt.a):60-68. |
[9] | Nathan S.Jacobson;Donald M.Curry .Oxidation microstructure studies of reinforced carbon/carbon[J].Carbon: An International Journal Sponsored by the American Carbon Society,2006(7):1142-1150. |
[10] | C. A. A. Cairo;M. Florian;M. L. A. Graca .Kinetic study by TGA of the effect of oxidation inhibitors for carbon-carbon composite[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):298-303. |
[11] | 魏彤,范壮军,刘朗.陶瓷/石墨复合材料的制备及高温氧化性能[J].稀有金属材料与工程,2007(z1):823-825. |
[12] | Li Hejun;Fu Qiangang;Shi Xiaohong et al.SiC whisker-toughened SiC oxidation protective coating for carbon/carbon composites[J].CARBO,2006,44:587-610. |
[13] | Aparicio M. .Yttrium Silicate Coatings for Oxidation Protection of Carbon-Silicon Carbide Composites[J].Journal of the American Ceramic Society,2000(6):1351-1355. |
[14] | Fu QG;Li HJ;Shi XH;Liao XL;Li KZ;Huang M .Microstructure and anti-oxidation property of CrSi2-SiC coating for carbon/carbon composites[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2006(10):3475-3480. |
[15] | Sngabe T;Matsuda T;Kuroda K et al.Preparation of B4C-mixed graphite by pressureless sintering and its air oxidation[J].CARBO,1995,33:1783-1788. |
[16] | Sogabe T.;Kuroda K.;Inagaki M.;Okada O. .IMPROVEMENT IN PROPERTIES AND AIR OXIDATION RESISTANCE OF CARBON MATERIALS BY BORON OXIDE IMPREGNATION[J].Carbon: An International Journal Sponsored by the American Carbon Society,1997(1):67-72. |
[17] | Sufang Tang;Jingyi Deng;Shijun Wang .Ablation behaviors of ultra-high temperature ceramic composites[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):1-7. |
[18] | Xiutao Li;Jingli Shi;Guobing Zhang .Effect of ZrB_2 on the ablation properties of carbon composites[J].Materials Letters,2006(7):892-896. |
[19] | Tong QF;Shi JL;Song YZ;Guo QG;Liu L .Resistance to ablation of pitch-derived ZrC/C composites[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(12/12):2495-2500. |
[20] | L.F. He;H.B. Zhong;J.J. Xu .Ultrahigh-temperature oxidation of Zr_2Al_3C_4 via rapid induction heating[J].Scripta materialia,2009(7):547-550. |
[21] | 李美栓.金属的高温腐蚀[M].北京:冶金工业出版社,2002:74. |
[22] | Neil Birks;Meier G H;Pettit F S.Introduction to the high-temperature oxidation of metals[M].Cambridge:Cambridge University Press,2006:67. |
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%