采用湿法混合和热压工艺制备了不同Si3N4(p)和SiC(w)体积含量的MoSi2基复合材料,研究了复合材料的显微组织,晶粒大小,硬度、断裂韧性和抗弯强度.结果表明,复合材料的晶粒比纯MoSi2明显细化,且随着强化相添加量的增加而减小,抗弯强度和断裂韧性均大幅度提高,其中MoSi2-20%SiC(w)-20%Si3N4(p)复合材料具有较好的综合力学性能,断裂韧性和抗弯强度分别427 Mpa和10.4 Mpa·m1/2.复合材料的强化机制为细晶强化和弥散强化,韧化机制为细晶韧化和裂纹偏转与分支韧化.
参考文献
| [1] | Manish Patel,J.Subramanyuam,V.V.Bhanu Prasad,Synthesis and mechanical properties of nanocrystalline MoSi2-SiC composite,Scripta Materialia,58(3),211(2008) |
| [2] | ZHOU Hongming,YI Danqing,SHI Zhangzhi,Present status of the study on MoSi2-baeed high termperature structural materials,Materials Review,20(11),404(2006)(周宏明,易丹青,石章智,MoSi2基高温结构材料的研究进展,材料导报,20(11),404(2006)) |
| [3] | G.H.Mohan,Development and characterization of SiC(f):MoSi2-Si3N4(p) hybrid composites,Materials Science and Engineering,A261(1-2),24(1999) |
| [4] | ZHANG Xiaoli,LU Zhenlin.JIN Zhihao,Preparation of a MoSi2-SiCp composite by reactive sintering without pressure,Rare Metal Materials and Engineering,32(12),1037(2003)(张小立,吕振林,金志浩,无压反应烧结制备MoSi2-SiCp复相材料的制备与性能,稀有金属材料与工程,32(12),1037(2003)) |
| [5] | MA Qin,WANG Cuixia,XUE Qunji,Structure development during mechanical slloying of Mo and Si powders,Rare Metal Materials and Engineering,32(3),170(2003)(马勤,王翠霞,薛群基,硅钼混合粉末在机械合金化过程中的结构演变,稀有金属材料与工程,32(3),170(2003)) |
| [6] | Lan Sun,Jiusheng Pan,TiC whisker-reinforced MoSi2matrix composites,Materials Letters,51(3),270(2001) |
| [7] | Houan Zhang,Dezhi Wang,Chiping Chen,Toughing of MoSi2 doped by La2O3 particles,Materials Science and Engineering,A345(1-2),118(2003) |
| [8] | H.Inui,K.Ito,T.Nakamoto,Stacking faults on(001)and their influence on the deformation and fracture behavior of single crystals of MoSi2一WSi2 solid-solutions with the C11b structure,Materials Science and Engineering,A314(1-2),31(2001) |
| [9] | Qin Ma,Yanqing Yang,Mokuang Kang,Qunji Xue,Microstucture and mechanical properties of hot-pressed MoSi2-matrix composites reinforced with SiC and ZrO2particles,Composites science and technology,61(7),963(2001) |
| [10] | Zhiquan Guo,Magdalena Parlinska-Wojtan,Gurdial Blugan,Thomas Graule,Mike J.Reece,Jakob Kuebler,The influence of the grain boundary phase on the mechanical properties of SiaN4-MoSi2 composites,Acta Materialia,55(8),2875(2007) |
| [11] | Zhiquan Gno,Gurdial Blugan,Thomas Graule,Mike Reece,Jakob Kuebler,The effect of different sintering additives on the electrical and oxidation properties of Si3N4-MoSi2 composites,Journal of the European Ceramic Society,27(5),2153(2007) |
| [12] | K.Yamada.N.Kamiya,High temperature mechanical properties of Si3N4-MoSi2 and Si3N4一SiC composites with network structures of second phases,Materials Science and Engineering,A261(3),270(1999) |
| [13] | W.K.Robert,G.H.Mohan,Cyclic oxidation study of MoSi2-Si3N4 base composites,Materials Science and Engineering,A261(3),300(1999) |
| [14] | ZHOU Hongming,YI Danqing,Toughening effect and mechanism within thermo compression composite Si3N4/MoSi2,Materials for Mechanical Engineering,32(3),23(2008)(周宏明,易丹青,热压Si3N4/MoSi2复合材料的强韧化效果与机制,机械工程材料,32(3),23(2008)) |
| [15] | J.Wolfenstine,Y.L.Jeng,E.J.Lavernia,Elevatedtemperature mechanical behavior of plasma-sprayed MoSi2SiC,Materials Science and Engineering,A189(1-2),257(1999) |
| [16] | WANG Xuecheng,CAI Huifen,WANG Xiaotian,Analysis of morphology and structure of MoSi2 synthesized by combustion method.The Chinese Journal of Nonferrous Metals,5(2),103(1995)(王学成,柴惠芬,王笑天,燃烧合成MoSi2的组织结构特征分析,中国有色金属学报,5(2),103(1995)) |
| [17] | Gang Wang,Wan Jiang,Guangzhao Bai,Si3N4 rodlike crystal-reinforced MoSi2 matrix composites.Materials Letters,58(3-4),308(2004) |
| [18] | XiAO Jimei,The Toughness and Toughening of Metal (Shanghai:Shanghm Science and Technology Press,1983) P.156(肖纪美,金属的韧性与韧化(上海,上海科学技术出版社,1983)P.156) |
| [19] | ZHANG Houan,XU Jianguang,YAN Jianhui,HU Xiaoping,Preparation and properties of MoSi2 and MOSi2-based composites(Beijing,National Defence Industry Press,2007)P.45(张厚安,许剑光,颜建辉,胡小平,二硅化钼及其复合材料的制备与性能(北京,国防工业出版社,2007)P.45) |
| [20] | MA Qin,YANG Yanqing,KANG Mokuang,Study of Kic values of HP MoSi2 matrix composite estimated by indentation method,Rare Metal Materials and Engineering,25(2),30(1996)(马勤,杨延清,康沫狂,压痕法测定热压MoSi2基复合材料K1c值的研究,稀有金属材料与工程,25(2),30(1996)) |
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