SiC-MoSi<sub>2</sub>-Si复合梯度涂层的制备及其抗氧化性能

李帅鹏; 张明瑜; 黄东; 黎烈武; 李军; 黄启忠

SiC-MoSi₂-Si复合梯度涂层的制备及其抗氧化性能

中南大学, 中南大学粉末冶金国家重点实验室, 湖南长沙 410083

基金项目: 国家973计划项目（2011CB605801）.

详细信息

作者简介:
李帅鹏,硕士研究生.E-mail:1194597061@qq.com

通讯作者:
张明瑜,副教授.E-mail:csuzmy@163.com

中图分类号: TB333
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- 文章访问数: 332
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- 被引次数: 0
出版历程
- 收稿日期: 2017-07-25
- 录用日期: 2018-02-11
- 修回日期: 2017-10-09
- 刊出日期: 2018-02-28

Preparation and antioxidation property of a SiC-MoSi₂-Si multilayer coating on a C/C composite

State Key Laboratory of Power Metallurgy, Central South University, Changsha 410083, China

Funds: National 973 Program of China (2011CB605801).

摘要

摘要: 为了在高温下保护C/C复合材料，分别采用包埋法在C/C复合材料表面制备了SiC涂层，采用两步包埋法在C/C复合材料表面制备了SiC-MoSi₂-Si复合梯度涂层。借助X射线衍射仪、扫描电镜，背散射及能谱等分析手段，研究了涂层的结构。在氧化炉内进行氧化实验，分析发现SiC-MoSi₂-Si复合梯度涂层由SiC内层、SiC-Si中间层和MoSi₂-Si-SiC外层构成。等温氧化测试结果表明：SiC涂层在1 773 K氧化10 h后失重0.8%，而复合涂层试样在1 773 K具有良好的抗氧化性能，在1 773 K下氧化10 h后不存在氧化失重，增重0.65%。增重是由于涂层氧化生成SiO₂，吸收了氧原子的原因，并且预测随着氧化的进行，由于O₂在涂层中的扩散，与基体反应，试样会表现出失重。
- C/C复合材料 /
- SiC内层 /
- SiC-Si中间层 /
- MoSi₂-Si-SiC外涂层 /
- 抗氧化
Abstract: A multilayer SiC-MoSi₂-Si coating was prepared on the surface of a C/C composite by a two-step pack cementation method, in which the sample was first buried in a powder mixture containing Si, C(graphite), Al₂O₃ and SiC followed by heat treatment at 2023 K for 2 h in Ar and then treated for a second time in another powder mixture containing MoSi₂, Si, SiC and C(graphite). The microstructure of the resulting coating was characterized by XRD, SEM equipped with EDS and backscattered SEM. The isothermal oxidation of the coating was investigated in an electric furnace. Results indicated that the multilayer coating was composed of a SiC inner layer, a SiC-Si gradient middle layer and a MoSi₂-Si-SiC outer layer. The mass loss of the coating obtained after only the first step is 0.8% after oxidation at 177 3 K for 10 h in air while the two-step coating shows no mass loss but a mass gain of 0.65%, indicating that the mass gain due to the formation of SiO₂ from Si or SiC is higher than the mass loss from carbon oxidation.
- C/C composite /
- SiC inner coating /
- SiC-Si gradient coating /
- MoSi₂-SiC-Si outer coating /
- Anti-oxidation

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参考文献(16)

邹林华, 黄勇, 黄伯云. C/C复合材料的显微结构及其与工艺, 性能的关系[J]. 新型炭材料, 2001, 16(4):63-70. (ZOU Lin-hua, HUANG Yong, HUANG Bai-yun, et al. The relationship among microstructures, processing, parameters and properties for carbon-carbon composites[J]. New Carbon Materials, 2001, 16(4):63-70.)

Sheehan J E, Buesking K W, Sullivan B J. Carbon-carbon composites[J]. Annual Review of Materials Science, 1994, 24(1):19-44.

杨鑫, 黄启忠, 苏哲安, 等. C/C复合材料的高温抗氧化防护研究进展[J]. 宇航材料工艺, 2014, 44(1):1-15. (YANG Xin, HUANG Qizhong, SU Zhean, et, al. Review of recent progress on oxidation protection for C/C composites at high temperature[J]. Aerospace Materials & Technology, 2014, 44(1):1-15.)

Jacobson N S, Curry D M. Oxidation microstructure studies of reinforced carbon/carbon[J]. Carbon, 2006, 44(7):1142-1150.

苏哲安, 杨鑫, 黄启忠, 等. SiC涂层对C/C复合材料高温氧乙炔焰烧蚀性能影响[J]. 中国有色金属学报, 2011, 21(11):2838-2845. (SU Z A, YANG X, HUANG B Y, et al. Effect of SiC coating on ablation resistance of C/C composites under oxyacetylene torch flame[J]. The Chinese Journal of Nonferrous Metals, 2011, 21(11):2838-2845.)

Fu Q G, Li H J, Shi X H, et al. Silicon carbide coating to protect carbon/carbon composites against oxidation[J]. Scripta Materialia, 2005, 52(9):923-927.

李贺军, 薛晖, 付前刚, 等. C/C复合材料高温抗氧化涂层的研究现状与展望[J]. 无机材料学报, 2010, 25(4):337-343. (LI H J, XUE H, FU Q G, et, al. Research status and prospect of anti-oxidation coatings for carbon/carbon composites[J]. Journal of Inorganic Materials, 2010, 25(4):337-343.)

Jacobson N S, Roth D J, Rauser R W, et al. Oxidation through coating cracks of SiC-protected carbon/carbon[J]. Surface and Coatings Technology, 2008, 203(3):372-383.

Xin Y, SU Z, HUANG Q, et al. Preparation and oxidation resistance of mullite/SiC coating for carbon materials at 1150 degrees C[J]. Transactions of Nonferrous Metals Society of China, 2012, 22(12):2997-3002.

Zhang Y L, Li H J, Fu Q G, et al. A Si-Mo oxidation protective coating for C/SiC coated carbon/carbon composites[J]. Carbon, 2007, 45(5):1130-1133.

杨鑫, 邹艳红, 黄启忠, 等. C/C复合材料MoSi₂-Mo₅Si₃/SiC涂层的制备及组织结构[J]. 无机材料学报, 2008, 23(4):779-783. (YANG X, ZOU Y-H, HUANG Q Z, et al. Preparation and structure of MoSi₂-Mo₅Si₃/SiC multi-coating for carbon/carbon composites[J]. Journal of Inorganic Materials, 2008, 23(4):779-783.)

付前刚, 李贺军, 李克智, 等. C/C复合材料防氧化涂层SiC/SiC-MoSi₂的制备与抗氧化性能[J]. 金属学报, 2009, 45(4):503-506. (FU Q G, LI H J, LI K Z, et al. Preparation and anti-oxidation property of SiC/SiC-MoSi₂ coating on C/C composite[J]. Acta Metallurgica Sinica, 2009, 45(4):503-506.)

薛晖, 李贺军, 付前刚, 等. 炭/炭复合材料SiC-MoSi₂/SiC涂层结构及防氧化性能研究[J]. 固体火箭技术, 2009, 31(6):638-641. (XUE H, LI HJ, FU Q G, LI KZ, et al. Microstructure and anti-oxidation properties of SiC-MoSi₂/SiC coating for C/C composites[J]. Journal of Solid Rocket Technology, 2009, 31(6):638-641.)

Zhang Y L, Li H J, Qiang X F, et al. C/SiC-MoSi₂-Si multilayer coatings for carbon/carbon composites for protection against oxidation[J]. Corrosion Science, 2011, 53(11):3840-3844.

F Q G, L H J, L K Z, et al. SiC whisker-toughened MoSi₂-SiC-Si coating to protect carbon/carbon composites against oxidation[J]. Carbon, 2006, 44(9):1866-1869.

Huang M, Li K Z, Li H J, et al. Influence of silicon content on microstructure and antioxidation property of SiC coating for carbon-carbon composites[J]. Surface Engineering, 2007, 23(4):253-256.

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