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Preparation and ablation properties of ZrC-SiC coating for carbon/carbon composites by solid phase infiltration

机译：固相渗透法制备碳/碳复合材料ZrC-SiC涂层及其烧蚀性能

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摘要

A novel ZrC-SiC coating was prepared on carbon/carbon (C/C) composites surface by solid phase infiltration and the ablation properties of the ZrC-SiC coated C/C composites under oxyacetylene flame were studied. The results show that the coating prepared on the condition of optimum process parameters exhibits dense surface and outstanding anti-ablation ability. After ablation for 20 s, the mass ablation rates of the coated C/C composites can be lowered to 2.36 × 10~(-3) g/s, 37.1% reduction compared with uncoated C/C composites. The oxide layer composed of ZrO_2 and SiO_2 acts as oxygen diffusion barrier and the evaporation of ZrO_2 and SiO_2 absorbs a great amount of heat from the flame and reduces the erosive attack on the coating.
机译：通过固相渗透在碳/碳（C / C）复合材料表面制备了新型的ZrC-SiC涂层，并研究了在氧乙炔火焰下ZrC-SiC涂覆的C / C复合材料的烧蚀性能。结果表明，在最佳工艺参数条件下制备的涂层具有致密的表面和出色的抗烧蚀能力。消融20 s后，涂层C / C复合材料的质量消融速率可降低至2.36×10〜（-3）g / s，与未涂层C / C复合材料相比降低了37.1％。由ZrO_2和SiO_2组成的氧化物层起着氧扩散的作用，ZrO_2和SiO_2的蒸发吸收了火焰中的大量热量，并减少了对涂层的侵蚀。

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  • 来源
    《Applied Surface Science》 |2011年第1期|p.565-571|共7页
  • 作者

    Zhaoqian Li; Hejun Li; Wei Li; Jie Wang; ShouyangZhang; JuanGuo;

  • 作者单位

    State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, PR China;

    State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, PR China;

    State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, PR China;

    State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, PR China;

    State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, PR China;

    School of Chemistry and Chemical Engineering, XianYang Normal College, XianYang 712000, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    carbon/carbon composites; solid phase infiltration; ZrC-SiC coating; ablation properties;

    机译：碳/碳复合材料;固相渗透ZrC-SiC涂层;烧蚀特性;

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