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熔渗温度对MoSi2(Cr5Si3)-RSiC复合材料显微结构和性能的影响

DOI: 10.7521/j.issn.0454-5648.2014.09.04

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Abstract:

以RSiC为基体,通过酚醛树脂浸渍裂解(PF-PIP)和MoSi2-Si-Cr合金活化熔渗(AMMI)复合工艺制备具有三维互穿网络结构的MoSi2(Cr5Si3)-RSiC复合材料。借助于X射线衍射、扫描电子显微镜、力学性能和电阻率测试等研究了熔渗温度对复合材料组成、显微结构、力学性能和导电性能的影响。采用改进型混合规则探讨了复合材料互穿网络结构和界面结合性对其导电方式的影响。结果表明不同温度所制备的复合材料主要组成均为SiC、MoSi2和Cr5Si3;随着熔渗温度的升高,复合材料气孔率和体积电阻率下降,密度、抗弯强度和弹性模量提高。当熔渗温度为1900℃时,复合材料的气孔率、密度、抗弯强度、弹性模量和体积电阻率分别为1.4%、3.5g/cm3、99.2MPa、313.60GPa和124.2mΩ?cm。当熔渗温度较低时(1700℃),复合材料的导电方式与颗粒增强复合材料的导电方式接近,随温度升高,复合材料的导电方式与传统复合材料的导电方式差别增大。

References

[1]   GUO Wenming, XIAO Hanning, GAO Pengzhao,et al. Investigation of MoSi2 melt infiltrated RSiC and its oxidation beavhior[J]. Ceram Int, 2012,38:111-117.
[2]   GUO Wenming, XIAO Hanning, LEI Haibo,et al. Effect of SiO2 content on the microstructure and consolidation mechanism of recrystallized silicon carbide[J]. J Ceram Process Res 2011,12(6): 682-687.
[3]   雷海波,肖汉宁,郭文明,等.高温氧化对再结晶碳化硅陶瓷断裂强度的影响[J].硅酸盐学报,2010,38(8):1519-1522.
[4]     LEI Haibo,XIAO Hanning,GUO Wenming, et al. J Chin Ceram Soc, 2010, 38(8): 1519-1522.
[5]   高朋召,黄诗婷,汪文祥,等.MoSi2-RSiC复合材料的高温抗氧化性能及氧化机理[J].硅酸盐学报,2012,40(6): 789-795.
[6]     GAO Pengzhao,HUANG Shiting,WANG Wenxiang,J Chin Ceram Soc, 2010, 38(8): 1519-522,2012, 40(6): 789-795.
[7]   CHEN Fang, XU Jianguang, YAN Jianhui,et al.Effects of Y2O3 on SiC/MoSi2 composite by mechanical-assistant combustion synthesis[J]. Int J Refract Met Hard Mater, 2013, 36: 143-148.
[8]   NIU Yaran, WANG Hongyan, LI Hong,et al. Dense ZrB2-MoSi2 composite coating fabricated by low pressure plasma spray (LPPS)[J].Ceram Int, 2013, 39(8):9773-9777.
[9]   JAYASHANKAR J S,ROSS E N, EASON P D,et al. Processing of MoSi2-based intermetallics[J]. Mater Sci Eng, A, 1997, A239-240: 485-492.
[10]   WINZER Jami, WEILER Ludwig, POUQUET Jeanne,et al.Wear behaviour of interpenetrating alumina-copper composites[J]. Wear, 2011, 271: 2845-2851.
[11]   GAO Pengzhao, WANG Ling, HUANG Shi-ting, et al. Microstructure and mechanical properties of 3-D interpenetrated network structure MoSi2-RSiC composite[J]. Ceram Int, 2012, 38: 5799-5805.
[12]   ANUP K B, JUERGEN G H. Cellular molybdenum silicide/silicon carbide composites from stems of maize[J]. J Am Ceram Soc,2006, 89(1): 367-369.
[13]   FENG Tao, LI Hejun, Fu Qiangang, et al. The oxidation behavior and mechanical properties of MoSi2-CrSi2-SiC-Si coated carbon/carbon composites in high-temperature oxidizing atmosphere [J]. Corros Sci, 2011, 53:4102-4108.
[14]   SABINE M, JURGEN G. HEINRICH. Processing-microstructure-properties relationships of MoSi2-SiC composites[J]. J Eur Ceram Soc, 2002, 22(13):2357-2363.
[15]   易丹青,刘会群,王斌.金属硅化物[M].北京,冶金工业出版社,2012:3-7.
[16]   Goyala R K, Kambalea K R, Nenea S S, et al. Fabrication, thermal and electrical properties of polyphenylene sulphide/copper composites [J]. Mater Chem Phys, 2011, 128:114-120.
[17]   BECKMAN S, COOK B A, AKINC M. An analysis of electrical resistivity of compositions within the Mo-Si-B ternary system part II: Multi-phase composites[J]. Mater Sci Eng A,2001, A299: 94-104.

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