通过热压烧结制备SiC-ZrO2/MoSi2复相陶瓷以及对比试样MoSi2、ZrO2/MoSi2、SiC/MoSi2陶瓷,利用X射线衍射仪、透射电镜以及力学性能测试仪器等对材料组织和力学性能进行了研究.结果表明:纳米ZrO2、SiC颗粒的加入可以有效细化MoSi2基体晶粒,纳米ZrO2、SiC颗粒协同作用更有利于提高MoSi2基陶瓷的抗弯强度和断裂韧性,协同相中纳米SiC颗粒细化和强化MoSi2基体的效果要好于纳米ZrO2颗粒;20 vol%SiC+10 vol% ZrO2+MoSi2复相陶瓷抗弯强度是MoSi2的3.8倍,断裂韧度是MoSi2的2.4倍;在复相陶瓷基体以及粒子周围存在不同特征的位错组态,ZrO2可以依靠自身相变的体积效应向基体泵入或输送位错,钉扎位错的第二相粒子包括SiC粒子和未相变的ZrO2小粒子,弥散相特别是晶内型SiC和ZrO2粒子对复相陶瓷位错的钉扎作用明显.
参考文献
| [1] | 康鹏超,尹钟大,朱景川,等.MoSi2基高温结构材料的研究进展[J].宇航材料工艺,2002,32(5):10-14.Kang Pengchao,Yin Zhongda,Zhu Jingchuan,et al.Progress in research on MoSi2-base elevated temperature structural material[J].Aerospace Materials & Technology,2002,32(5):10-14. |
| [2] | Vasudevan A K,Petrovic J J.A comparative overview of molybdenum disilicid composites[J].Mater Sci Eng,1992,155(1/2):1-17. |
| [3] | Hawk J A,Alman D E.A comparative study of the abrasive wear behavior of MoSi2[J].Script Metal Mater,1995,31(4):473-478. |
| [4] | 吕晋军,王静波,杨生荣,等.MoSi2及其复合材料摩擦学性能研究[J].摩擦学学报,2003,23(5):361-366.Lü Jinjun,Wang Jingbo,Yang Shengrong,et al.Tribologcial properties of MoSi2 and its composites[J].Tribology,2003,23(5):361-366. |
| [5] | 张厚安,陈平,颜建辉,等.La2O3和WSi2增强MoSi2基复合材料的摩擦磨损性能研究[J].摩擦学学报,2005,25(5):230-231.Zhang Hou'an,Chen Ping,Yan Jianhui,et al.Friction and wear behavior of La2O3 and WSi2 reinforced MoSi2 composite[J].Tribology,2005,25(5):230-231. |
| [6] | Hu Qiaodan,Luo Peng,Yan Youwei.Microstructures and densification of MoSi2-SiC composite by field-activated and pressure-assisted combustion synthesis[J].Journal of Alloys and Compounds,2009,468(1/2):136-142. |
| [7] | 冯培忠,曲选辉,王晓虹,等.二硅化钼材料复合强韧化的研究进展[J].材料导报,2005,19(9):12-15.Feng Peizhong,Qu Xuanhui,Wang Xiaohong,et al.Progress in the strengthening and toughing of MoSi2 through composite approach[J].Materials Review,2005,19(9):12-15. |
| [8] | Bauer Johannes T,Scholz Alfred,Berger Christina,et al.Influence of metastable tetragonal ZrO2-reinforcements on the properties of MoSi2-composites[J].International Journal of Materials Research,2008,99(4):352-358. |
| [9] | Manukyan K V,Kharatyan S L,Kocher P,et al.MoSi2 -Si3N4 composites Influence of starting materials and fabrication route on electrical and mechanical properties[J].Journal of the European Ceramic Society,2009,29(10):2053-2060. |
| [10] | Hu Qiaodan,Luo Peng,Yan Youwei.Influence of spark plasma sintering temperature on sintering behavior and microstructures of dense bulk MoSi2[J].Journal of Alloys and Compounds,2008,459(1/2):163-168. |
| [11] | Zhang Hou'an,Tang Siwen,Yan Jianhui,et al.Fabrication and wear characteristics of MoSi2 matrix composites reinforced by La2O3 and MosSi3[J].International Journal of Refractory Metals & Hard Materials,2008,26(2):115-119. |
| [12] | Feng Peizhong,Wang Xiaohong,He Yaqiong,et al.Effect of high-temperature preoxidation treatment on the lowtemperature oxidation behavior of a MoSi2-based composite at 500℃[J].Journal of Alloys and Compounds,2009,473(1/2):185-189. |
| [13] | Raju G B,Mukhopadhyay A,Biswas K,et al.Densification and high-temperature mechanical properties of hot pressed TiB2 -(0～10 wt%) MoSi2 composites[J].Scripta Materialia,2009,61(7):674-677. |
| [14] | 刘伯威,潘进,樊毅,等.(SiCP+C)/MoSi2复合材料的组织结构及力学性能[J].中国有色金属学报,2001,11(4):631-637.Liu Bowei,Pan Jin,Fan Yi,et al.Microstructures and mechanical properties of (SiCP + C)/MoSi2 composite[J].The Chinese Journal of Nonferrous Metals,2001,11(4):631-637. |
| [15] | Petrovic J J.Mechanical behavior of MoSi2 and MoSi2 composites[J].Mater Sci Eng A,1995,192/193(1):31-37. |
| [16] | Petrovic J J,Bhattacharya A K,Honnell R E,et al.ZrO2 and ZrO2-SiC particle reinforced MoSi2 matrix composites[J].Materials Science and Engineering A,1992,155(1/2):259-266. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%