Synthesis and mechanical properties of nanocrystalline MoSi2-SiC composite
Synthesis and mechanical properties of nanocrystalline MoSi2-SiC composite
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DOI：
10.1016/j.scriptamat.2007.09.038
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发表时间：
2008-02
影响因子：
6
通讯作者：
Manish Patel;J. Subramanyuam;V. V. B. Prasad-V.
中科院分区：
文献类型：
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作者：
Manish Patel;J. Subramanyuam;V. V. B. Prasad-V.
采用溶液法制备纳米晶碳化钼（Mo2C）预制体，采用液态硅渗透法制备纳米晶MoSi2-SiC复合材料。mosi2和SiC的平均晶粒尺寸约为60nm。获得的平均硬度和断裂韧性分别为12GPa和4.3 mpam /2。不存在低硅化钼（Mo5Si3）和诺沃特尼相（Mo5Si3C）。通过x射线衍射、光学显微镜和显微硬度测试对复合材料进行了表征。
Nanocrystalline MoSi2–SiC composite was synthesized by liquid silicon infiltration in nanocrystalline molybdenum carbide (Mo2C) preform, which was synthesized by the solution route. The average crystallite size of MoSi2and SiC was about 60nm. The average hardness and fracture toughness obtained were 12GPa and 4.3MPam1/2, respectively. Lower molybdenum silicide (Mo5Si3) and Nowotny’s phase (Mo5Si3C) were absent. The composite was characterized by X-ray diffraction, optical microscopy and micro-hardness testing.