2.5维碳化硅纤维增强碳化硅复合材料的力学性能OA北大核心CSCDCSTPCD
MECHANICAL PROPERTY OF 2.5 DIMENSIONAL SILICON CARBIDE FIBER REINFORCED SILICON CARBIDE COMPOSITES
采用低压化学气相渗透法制备了具有热解碳界面层的2.5维SiCf/SiC复合材料.研究了界面层厚度和基体制备工艺对材料力学性能的影响.结果表明:0.1μm厚的界面层使材料的弯曲强度提高了104.2%从144增加到294MPa),材料表现为非灾难性断裂;界面层厚度进一步增加(到0.161μm),纤维的增强效果减弱,材料的断裂行为变差.基体制备温度由1050℃降到950℃时,材料强度增加了≈45%(从188增加到274MPa):制备压力由8kPa增加到…查看全部>>
Silicon carbide fiber reinforced silicon carbide (SiCf/SiC) composites were fabricated with a pyrocarbon interface layer between porous 2.5-dimensional SiC fiber preforms and SiC matrix deposited by the low pressure chemical vapor infiltration method. The effects of the interface layer thickness and matrix fabrication conditions on the mechanical properties of composites were inves-tigated. The results show that a pyrocarbon inter face layer 0.1 μm thick mak…查看全部>>
于新民;周万城;郑文景;罗发
西北工业大学,凝固技术国家重点实验室,西安,710072西北工业大学,凝固技术国家重点实验室,西安,710072西北工业大学,凝固技术国家重点实验室,西安,710072西北工业大学,凝固技术国家重点实验室,西安,710072
碳化硅纤维增强碳化硅力学性能界面层化学气相渗透
silicon carbide fiber reinforced silicon carbide compositemechanical propertiesinterlayer, chemical vapor infiltration
《硅酸盐学报》 2008 (11)
1559-1563,5
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