曲栋,倪立勇,卢鹉,杨杰,杨玉茹.Zr-Mo-Si-C四元复合涂层抗氧化烧蚀性能研究[J].表面技术,2018,47(5):130-136.
QU Dong,NI Li-yong,LU Wu,YANG Jie,YANG Yu-ru.Oxidation and Ablation Resistance of Zr-Mo-Si-C Composite Coating[J].Surface Technology,2018,47(5):130-136 |
| Zr-Mo-Si-C四元复合涂层抗氧化烧蚀性能研究 |
| Oxidation and Ablation Resistance of Zr-Mo-Si-C Composite Coating |
| 投稿时间：2017-12-04 修订日期：2018-05-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.05.019 |
| 中文关键词: Zr-Mo-Si-C复合涂层 第二相 氧-乙炔火焰烧蚀 氧化作用 烧蚀机理 低压等离子喷涂 |
| 英文关键词:Zr-Mo-Si-C composite coating second phase oxyacetylene flame oxidation reaction ablation mechanism low pressure plasma spray |
| 基金项目: |
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| Author | Institution |
| QU Dong | Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China |
| NI Li-yong | Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China |
| LU Wu | Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China |
| YANG Jie | Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China |
| YANG Yu-ru | Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China |
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| 中文摘要: |
| 目的 提高C/C复合材料高温抗烧蚀性能。方法 通过低压等离子喷涂技术，在石墨基体表面制备出Zr-Mo-Si-C四元复合涂层，采用氧-乙炔火焰烧蚀试验对涂层的抗烧蚀性能进行测试，并通过SEM、EDS、XRD分析了烧蚀前后涂层的物相组成和微观形貌，分析了涂层的抗烧蚀机理。结果 涂层在1800 ℃烧蚀60、180、300 s后均保持良好的涂层状态，线烧蚀率分别为1.2×103、0.4×103、0.3×103 mm/s。烧蚀300 s后，涂层截面呈现三个区域，分别为表面烧蚀区、阻挡层和未烧蚀区。结论 通过添加MoSi2作为第二相可显著提高ZrC涂层的抗烧蚀性能，涂层在烧蚀过程中形成三个区域，其中表面烧蚀区和阻挡层能够有效地阻隔烧蚀的进行，未烧蚀区发生的烧结致密化进一步提高了涂层的抗氧化烧蚀性能。 |
| 英文摘要: |
| Coating technology is a main method to improve ablation resistance of C/C composites at high temperature. Zr-Mo-Si-C composite coating was prepared on graphite substrate by low pressure plasma spray. The ablation resistance of the coating was tested by oxyacetylene flame. The phase composition and microstructure of the coating were studied by XRD, EDS and SEM, respectively and the ablation mechanism of the composite coating was also analyzed. The coating was in good condition after ablation at 1800 ℃ for 60 s, 180 s and 300 s and the linear ablation was respectively 1.2×103 mm/s, 0.4×103 mm/s and 0.3×103 mm/s. For 300 s’ ablation, there were three areas on the cross section of the coating, respectively ablative area, barrier layer and non-ablative area. The ablation resistance of ZrC coating can be improved by adding MoSi2 as the second phase. The coating shows three areas during ablation, ablative area and barrier layer can effectively inhibit the ablation and non-ablative area forms sintering densification to further improve the oxidation and ablation resistance of coating. |
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