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Fabrication and Mechanical Properties of Reaction Sintered Silicon Carbide Matrix Composite

机译:反应烧结碳化硅基复合材料的制备及力学性能

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Dense silicon carbide (SiC) matrix composite is one of the most prospective candidates for a material of gas turbine hot parts, because of its high temperature stability, high thermal conductivity and high Young's modulus. In this work, dense SiC matrix composite reinforced by Hi-Nicalon uni-directional fiber with boron nitride (BN) coating was fabricated by a slurry impregnation and a subsequent reaction sintering process. Tensile strength behavior at room temperature and in situ fiber strength was evaluated. Measured ultimate strength of the composite was compared with the prediction made on the basis of in situ fiber strength characteristics and available analytical model.
机译:致密碳化硅(SiC)基复合材料由于其高温稳定性,高导热性和高杨氏模量而成为燃气轮机热零件材料的最有前景的候选材料之一。在这项工作中,通过浆料浸渍和随后的反应烧结工艺,制备了由Hi-Nicalon单向纤维与氮化硼(BN)涂层增强的致密SiC基复合材料。评价了室温下的拉伸强度行为和原位纤维强度。将测得的复合材料的极限强度与基于原位纤维强度特性和可用分析模型所作的预测进行比较。

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