为了提高炭/炭(C/C)复合材料的高温抗氧化性能,应用多相反应技术在C/C复合材料表面制备SiC/Mo(Six、Al1-x )2复合涂层。利用扫描电镜、电子能谱、X射线衍射仪等测试手段对涂层材料的微观结构和物相组成进行分析,同时研究涂层C/C复合材料在超音速气流中的抗氧化性能。结果表明,C/C复合材料表面形成的抗氧化涂层显示出明显的双层结构,从外向内分别为Mo(Six、Al1-x)2与SiC的复合层和纯SiC层,同时有少量的Mo4.8Si3C0.6存在于涂层中。在温度为1800K、气体速率1500m/s的超音速气流中氧化冲刷96s,以及在2550K和室温下热循环24次的测试条件下,制备的SiC/Mo(Six、Al1-x )2涂层材料均未发生破坏现象。涂层材料优良的抗氧化性能和抗热震性能主要归因于基体C/C复合材料的高强度以及在氧化过程中材料表面形成的连续稳定的SiO2和Al2 O3玻璃相。
SiC/Mo(Six, Al1-x)2 multilayer coatings were prepared on carbon/carbon (C/C) composites using a multi-phase reac-tion technique to improve their high temperature oxidation resistance. The microstructure and phase compositions of the multilayer coatings were investigated by SEM, XRD and EDS. The coating exhibits a binary-layer microstructure, i. e. an outer Mo ( Six , Al1-x ) 2 layer and an inner SiC layer with a small amount of Mo4. 8 Si3 C0. 6 . The oxidation behavior of the coated C/C composites was evaluated in a supersonic flow of about 1 500 m·s-1 at 1 800 K in a wind tunnel. No destruction of the coated C/C composites was found after 4s oxidation after 24 exposures and thermal cycling between room temperature and 2550K for 24 times in air. The excel-lent oxidation resistance and thermal shock resistance are attributed to a high cohesion between the layers and the C/C composite, and the formation of a continuous and stable glassy film consisting of SiO2 and Al2 O3 on the coated layers during oxidation.
参考文献
| [1] | Fitzer E;Manocha L M.Carbon Reinforcements and Carbon/Carbon Composites[M].Springer Berlin,Heidelberg:Springer-Verlag,1998 |
| [2] | Buckley J D .Carbon-carbon:an overview[J].American Ceramic Society of Bulletin,1988,67:364-368. |
| [3] | Xiyuan Yao,Hejun Li,Yulei Zhang,Yongjie Wang.Oxidation and Mechanical Properties of SiC/SiC-MoSi2-ZrB2 Coating for Carbon/Carbon Composites[J].材料科学技术（英文版）,2014(02):123-127. |
| [4] | Sheehan J E;Buesking K W;Sullivan B J .Carbon-carbon com-posites[J].Annual Review of Materials Science,1994,24:19-44. |
| [5] | McKee D W .Oxidation behavior and protection of carbon/car-bon composites[J].CARBON,1987,25(04):551-558. |
| [6] | HOU Xiao;CHENG Wen;CHEN Ni et al.Preparation of a high performance carbon/carbon composite hroat insert woven with axial carbon rods[J].NEW CARBON MATERIALS,2013,28(05):355-362. |
| [7] | Shemet Z S;Pomytkin A P;Neshpor V S .High temperature ox-idation behavior of carbon materials in air[J].CARBON,1993,31(01):1-6. |
| [8] | 张雨雷,李贺军,李克智,费杰,曾燮榕.炭/炭复合材料表面C/SiC/Si-Mo-Cr层复合防氧化涂层研究[J].新型炭材料,2012(02):105-110. |
| [9] | F. Smeacetto;M. Salvo;M. Ferraris .Oxidation protective multilayer coatings for carbon-carbon composites[J].Carbon: An International Journal Sponsored by the American Carbon Society,2002(4):583-587. |
| [10] | Fu QG;Li HJ;Shi XH;Li KZ;Wang C;Huang M .Double-layer oxidation protective SIC/glass coatings for carbon/carbon composites[J].Surface & Coatings Technology,2006(11):3473-3477. |
| [11] | Frize H;Jojie J;Witke T et al.Mullite based oxidation pro-tection for SiC-C/C composites in air at temperatures up to 1900 K[J].Journal of Europe Ceramic Society,1988,18:2351-2364. |
| [12] | Jian-Feng Huang;He-Jim Li;Xie-Rong Zeng .Yttrium silicate oxidation protective coating for SiC coated carbon/carbon composites[J].CERAMICS INTERNATIONAL,2006(4):417-421. |
| [13] | Nathan S. Jacobson;Donald M. Curry .Oxidation micro structure studies of reinforced carbon/carbon[J].Carbon: An International Journal Sponsored by the American Carbon Society,2006(7):1142-1150. |
| [14] | LAI Zhong-hong;FANG Hai-tao;ZUO Xin et al.Effect of Al content in an Al/Si layer on the oxidation behavior of the Mo/Si-Al/Si double-layer coated C/C composites at 1 370益[J].NEW CARBON MATERIALS,2013,28(03):222-227. |
| [15] | Hai-Tao Fang;Zhong-Da Yin;Jing-Chuan Zhu;Jae-Ho Jeon;Yoo-Dong Hahn .Effect of Al additive in Si slurry coating on liquid Si infiltration into carbon-carbon composites[J].Carbon: An International Journal Sponsored by the American Carbon Society,2001(13):2035-2041. |
| [16] | Berztiss D A;Cerchiara R R;Gulbransen E A et al.Oxidation of MoSi2 and comparison with other silicide materials[J].MATERIALS SCIENCE & ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,1992,155(1-2):165-181. |
| [17] | 曾燮榕,李贺军,杨峥.碳/碳复合材料表面MoSi2-SiC复相陶瓷涂层及其抗氧化机制[J].硅酸盐学报,1999(01):8-15. |
| [18] | Zhang X L;Lv Z L;Jin Z H .Study of pressureless-sintered Mo(Si,Al)2-SiC composite[J].RARE METAL MATERIALS AND ENGINEERING,2005,34(08):1268-1270. |
| [19] | 刘杨,杨艳,杜令忠,张树增,张伟刚.炭/炭复合材料SiC/Mo（Six,Al1-x）2涂层形成机理与抗高温氧化性能[J].炭素,2009(02):9-18. |
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