兰昊,张伟刚,黄传兵,房师阁,魏玺.Cf/SiC 复合材料表面 HfO2涂层的制备及其抗热冲击性能研究[J].装备环境工程,2016,13(3):25-30. LAN Hao,ZHANG Wei-gang,HUANG Chuan-bing,FANG Shi-ge,WEI Xi.Preparation of HfO2 Coatings on Cf/SiC Matrix Composites and Study of Its Thermal Shock Resistance[J].Equipment Environmental Engineering,2016,13(3):25-30.
Cf/SiC 复合材料表面 HfO2涂层的制备及其抗热冲击性能研究
Preparation of HfO2 Coatings on Cf/SiC Matrix Composites and Study of Its Thermal Shock Resistance
投稿时间:2016-01-31  修订日期:2016-06-15
DOI:10.7643/ issn.1672-9242.2016.03.004
中文关键词:  Cf/SiC 复合材料  HfO2涂层  抗热冲击性能
英文关键词:Cf/SiC matrix composites  HfO2 coatings  thermal shock resistance
基金项目:中国科学院国防科技创新重点部署项目(KGFZD-125-13-002)
作者单位
兰昊 中国科学院过程工程研究所 多相复杂系统国家重点实验室,北京 100190 
张伟刚 中国科学院过程工程研究所 多相复杂系统国家重点实验室,北京 100190 
黄传兵 中国科学院过程工程研究所 多相复杂系统国家重点实验室,北京 100190 
房师阁 中国科学院过程工程研究所 多相复杂系统国家重点实验室,北京 100190 
魏玺 中国科学院过程工程研究所 多相复杂系统国家重点实验室,北京 100190 
AuthorInstitution
LAN Hao State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences,Beijing 100190, China 
ZHANG Wei-gang State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences,Beijing 100190, China 
HUANG Chuan-bing State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences,Beijing 100190, China 
FANG Shi-ge State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences,Beijing 100190, China 
WEI Xi State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences,Beijing 100190, China 
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中文摘要:
      目的 研究等离子喷涂条件下 Cf/SiC 复合材料表面 HfO2涂层的物相、显微组织及其抗热冲击性能。 方法 通过水热合成和喷雾造粒制备出 HfO2 粉体,并利用等离子喷涂在 Cf/SiC 复合材料表面制备HfO2 涂层,研究涂层的物相、显微组织和抗热冲击性能。 结果 水热合成的纳米 HfO2为单斜相结构,颗粒的平均粒径为 10~15 nm;等离子喷涂制备的 HfO2 涂层组织中存在微裂纹和孔隙,涂层为单斜相结构,且经 1350 ℃热处理后涂层的相结构未发生改变。等离子喷涂的 HfO2涂层与 Cf/SiC 复合材料基体结合良好,未观察到涂层、基体间界面分离的现象。经 1350 ℃、 50 周次的空冷热冲击试验后,涂层未发生破坏失效;在 1350 ℃水冷热冲击条件下,热循环 20 次时涂层表面出现剥落, 27 次时脱落面积>50%。 结论 通过等离子喷涂制备的 HfO2 涂层与 Cf/SiC 复合材料基体结合良好,涂层能够抵御1350 ℃空冷、 50 周次热冲击,且未发生破坏失效,涂层的 1350 ℃水冷热循环寿命达 27 次。
英文摘要:
      Objective To study the phase constituent, microstructure and thermal shock resistance of plasma sprayed HfO2 coatings on Cf/SiC matrix composites. Methods HfO2 powders were fabricated via hydrothermal synthesis and spray-drying process. The HfO2 coatings were prepared on Cf/SiC matrix composites by plasma spraying. The phase constituent, microstructure and thermal shock resistance of the coatings were studied. Results The hydrothermal synthesized HfO2 particle exhibited monoclinic structure, and its average grain size ranged from 15 nm to 20 nm. Microcracks and holes were observed in the microstructure of plasma sprayed HfO2 coatings. And the phase constituent of the sprayed HfO2 coatings kept monoclinic structure at 1350 ℃. The sprayed HfO2 coatings exhibited an excellent bonding condition with the Cf/SiC substrate. No spallation was observed between the coatings and the substrate. Under condition of 1350℃ water cooling-heating impact, surface disbonding occurred in the HfO2 coatings after 20 thermal cycles, and more than 50% surface area of HfO2 coatings disbonded from the substrate after 27 thermal cycles. Conclusion The plasma sprayed HfO2 coatings exhibited an excellent bonding condition with the Cf/SiC substrate, and could resist 50 thermal cycles of 1350 ℃ air-cooling test without degradation and failure. In water-cooling test, the life of the coatings could reach 27 thermal cycles.
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