首页|期刊导航|宇航材料工艺|C/C复合材料SiC/SiO2涂层的制备及其抗氧化性能

C/C复合材料SiC/SiO2涂层的制备及其抗氧化性能OA北大核心CSCDCSTPCD

Preparation and Oxidation Resistance ofSiC/SiO2 Coating for C/C Composites

中文摘要英文摘要

为提高C/C复合材料的抗氧化性能,采用包埋法和低压化学气相法制备了SiC/SiO2涂层.借助XRD、SEM和EDS等测试手段分析了复合涂层的微观结构,并研究了其在l273、1773 K静态空气中的抗氧化性能.结果表明,包埋法制备的SiC涂层具有一定的浓度梯度.低压化学气相法制备的非晶Si02外涂层则有效地封堵了SiC内涂层的的裂纹和孔洞,并解决了SiC涂层在中温区(1073~1473 K)无法形成完整SiO2膜的问题.在l 273、1 773 K…查看全部>>

In order to improve the oxidation resistance of the C/C composites, a SiC/SiO2 coating was prepared by pack cementation and low-pressure CVD. The microstructures of the multilayer coating were studied by XRD, SEM and EDS analyses, and then the oxidation resistance of the as-coated C/C composites was evaluated in ambient air at 1 273 K and 1 773 K. The results show that the SiC coating prepared by pack cementation has a compositional gradient. And the externa…查看全部>>

梁武;李国栋;熊翔

中南大学粉末冶金研究院,长沙410083中南大学粉末冶金研究院,长沙410083中南大学粉末冶金研究院,长沙410083

C/C复合材料包埋法LPCVDSiCSiO2抗氧化

C/C composites Pack cementation LPCVD SiC SiO2 Anti-oxidation

《宇航材料工艺》 2011 (5)

55-59,5

国家重点基础研究发展计划资助项目(2011CB605805)国家创新群体基金项目(51021063)

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