Preparation of MoSi<sub>2</sub> Based Composite and Its Strengthening and Toughening Mechanism

WEN Xiao-hao; YOU Hang; HAN Xiao-yun; DING Xiao-qin; ZHANG Xue-bin; XU Jin-fu

Materials and Mechanical Engineering > 2011 > 35(1): 15-18.

WEN Xiao-hao, YOU Hang, HAN Xiao-yun, DING Xiao-qin, ZHANG Xue-bin, XU Jin-fu. Preparation of MoSi₂ Based Composite and Its Strengthening and Toughening Mechanism[J]. Materials and Mechanical Engineering, 2011, 35(1): 15-18.

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Preparation of MoSi₂ Based Composite and Its Strengthening and Toughening Mechanism

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Received Date: August 10, 2010

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Several MoSi2 based composites were prepared by the vaccum hot pressure sintering technique. The influence of the strengthening and toughening phase on the microstructure and mechanical properties of the composites was studied, and the strengthening and toughening mechanisms were investigated. The results show that strengthening and toughening of the MoSi2 could be impoved inordinately by the strengthening and toughening phase addition. The effect depended on its amaunt, type and content, while two phases were appropriate. The micro-hardness, fracture toughness and flexural strength of the 5%/SiC+5%Nb/MoSi2 composites were 12.86 GPa, 1142 MPa·m1/2 and 470 MPa, compared with hot pressure sintering MoSi2 monomer composites increased by 3122%, 223.5% and 70.9% respectively. The strengthening and toughening mechanism of the multi-MoSi2 based composites was the synergy of the phases. The effects depended on the matching between the phases.
- MoSi2 based composite,
- strengthening and toughening mechanism,
- hot pressure sintering

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[1]	WASUDEVAN A K, PETROVIC J J. A comparative overview of molybdenum disilicide composites[J].Material Science and Engineering, 1992, 155: 1-17.
[2]	PETROVIC J J. High temperature structural silicides[J].Engineering and Science Proceedings, 1997, 18: 3-17.
[3]	曹阳, 李国俊.金属间化合物高温结构材料的研究动向[J].材料导报, 1994(4): 14-18.
[4]	ZAKERI M, YAZDANI-RAD R, ENAYATI M H, et al. Synthesis of MoSi2-Al2O3 nanocomposite by mechanical alloy-ing[J].Materials Science and Engineering A, 2006, 430: 185-188.
[5]	MENG Jun-hu, LU Jin-jun. Preparation and properties of MoSi2 composites reinforced by TiC, TiCN, and TiB2[J].Materials Science and Engineering A, 2005, 396: 277-284.
[6]	COOK J, KHAN A, LEE E, et al. Oxidation of MoSi2-based composites[J].Materials Science and Engineering, 1991, 155(1/2): 183-198.
[7]	YI Dan-qing, LI Chang-hai. MoSi2-ZrO2 composites-fabrication, microstructures and properties[J].Materials Science and Engineering, 1999, 261: 89-98.
[8]	SUN Lan, PAN Jin-sheng. Fabrication and characterization of TiC particle reinforced MoSi2 composites[J].European Cera-mic Society, 2002, 22: 791-796.
[9]	HEBSUR M G. Development and characterization of SiC(f)/MoSi2-Si3N4(p) hybrid composites[J].Materials Science and Engineering A, 1999, 261: 24-37.
[10]	RONCARI E, PINASCO P, NAGLIATI M, et al. Tape casting of Al-SiC-MoSi2 composites[J].Journal of the European Ceramic Society A, 2004, 24: 2303-2311.
[11]	JOHANNES M, GUILLAUME B, FRANS V L, et al. The texture in diffusion-grown layers of disilicides MeSi2(Me=Mo, W, Ti, Nb, Ta) and compounds with related structures (NbGe2, TaGe2, TiNiCu)[J].Zeitschrift fuer Metallkunde, 1984, 75(2): 140-145.
[12]	吴海飞, 徐金富, 费有静, 等.第二相对MoSi2基复合材料组织与性能的影响[J].材料热处理学报, 2007, 28: 331-334.
[13]	徐金富, 陈胜, 吴海飞, 等.多相强韧化MoSi2基复合材料的制备及性能[J].机械工程材料, 2008, 32(12): 72-75.
[14]	徐金富, 费有静, 张学彬, 等.纳米ZrO2颗粒增强MoSi2基复合材料的显微组织和力学性能[J].金属热处理, 2007, 32(6): 33-36.
[15]	桂尤国, 徐金富, 叶以富.MoSi2基复合材料的室温韧性研究[J].粉末冶金工业, 2006, 16(2): 5-8.

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Preparation of MoSi₂ Based Composite and Its Strengthening and Toughening Mechanism