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SiC/MoSi2高温抗氧化涂层的制备及性能探究
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中南大学 材料科学与工程学院,广州有色金属研究院,广州有色金属研究院,中南大学 材料科学与工程学院,中南大学 材料科学与工程学院,广州有色金属研究院,广州有色金属研究院

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A SiC/MoSi2 oxidation protective coating for carbon/carbon composites prepared by magnetron sputtering method
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School of Materials Science and Engineering, Central South University,Guangzhoug Research Institute of Non-ferrous Metals,Guangzhoug Research Institute of Non-ferrous Metals,School of Materials Science and Engineering, Central South University,School of Materials Science and Engineering, Central South University,Guangzhoug Research Institute of Non-ferrous Metals,Guangzhoug Research Institute of Non-ferrous Metals

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    摘要:

    采用磁控溅射法在C/C复合材料表面制备SiC/MoSi2抗氧化涂层,并利用SEM、XRD以及EDS等测试手段对涂层的组织结构、抗氧化性能以及抗氧化机制进行了研究。结果表明,所得涂层结构致密、厚度均匀可控,呈柱状晶。在1500℃静态氧化60min后,涂层试样表现出了较优异的抗氧化性能,氧化质量损失仅为3.2x10-2g/cm-2。导致C/C基体被氧化失重的主要原因是涂层中沿晶界产生的贯穿裂纹为氧气进入基体表面提供了通道。

    Abstract:

    A SiC/MoSi2 alternating multilayer coating was produced on Carbon/Carbon (C/C) surface to protect it against oxidation by a magnetron sputtering method . The microstructural characteristic, oxidation behavior and oxidation mechanism of the SiC/MoSi2 multilayer coating were investigated. The as-received coating exhibited dense columnar structure and outstanding uniformity in thickness. The coated C/C composites performed a superior oxidation resistance, and its weight loss was only 3.2x10-2g/cm2 after oxidation at 1500℃ for 60min. The weight loss of the coated C/C composites was considered to be related with the penetration crack generated during the oxidation of the coating.

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符文彬,代明江,韦春贝,赵明纯,胡亮,侯惠君,林松盛. SiC/MoSi2高温抗氧化涂层的制备及性能探究[J].稀有金属材料与工程,2016,45(10):2543~2548.[fuwenbin, daimingjiang, weichunbei, zhaomingchun, huliang, houhuijun, linsongsheng. A SiC/MoSi2 oxidation protective coating for carbon/carbon composites prepared by magnetron sputtering method[J]. Rare Metal Materials and Engineering,2016,45(10):2543~2548.]
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  • 收稿日期:2014-07-05
  • 最后修改日期:2014-08-05
  • 录用日期:2014-09-28
  • 在线发布日期: 2016-11-10
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