以Ti,Al,Tic,TiO2粉末为原料,采用原位热压合成法制备了Ti3AlC2/Al2O3复合材料.主要考察不同Al2O3含量对复合材料性能的影响.在1 400℃,30 MPa压力,保温2 h条件下烧结制得致密的Ti3Alc2/Al2O3块体材料.采用XRD分析了不同Al2O3,含量的复合材料的相组成.用SEM观察组织结构特征.测量了维氏硬度和电导率同Al2O3含量的关系曲线.研究结果表明,A12O3,的加入可大幅度提高复合材的硬度.Ti3AlC2/25%A12O3的维氏硬度可达8.7 GPa.虽然添加Al2O3后复合材料的电导率有所下降,但Al2O3对复合材料强度和硬度的增加有显著的贡献.Ti3Al2C2/Al2O3乃不失为一种性能良好的高温结材材料.
参考文献
| [1] | Barsoum M W .The MN4AXN Phases:A New Class of Solids;Thermodynamically Stable Nanolaminates[J].Progress in Solid State Chemistry,2000,28:201-281. |
| [2] | Barsoum MW.;Elraghy T. .SYNTHESIS AND CHARACTERIZATION OF A REMARKABLE CERAMIC - TI3SIC2[J].Journal of the American Ceramic Society,1996(7):1953-1956. |
| [3] | Chaput L;Hug G;Pecheur P;Scherrer H .Thermopower of the 312 MAX phases Ti3SiC2, Ti3GeC2, and Ti3AlC2[J].Physical review, B. Condensed matter and materials physics,2007(3):5107-1-5107-5-0. |
| [4] | Li Shibo;Zhai Hongxiang.Synthesis and Microstrueture of Ti3AIC2 by Mechanically Activated Sintering of Elemental Powders[J].Ceramics International,2007(33):169-173. |
| [5] | XU Xue-wen,LI Yang-xian,ZHU Jiao-qun,MEI Bing-chu.High-temperature oxidation behavior of Ti3AlC2 in air[J].中国有色金属学会会刊（英文版）,2006(z1):869-873. |
| [6] | Wang Xiaohui;Zhou Yanchtm .Improvement of IntermediateTemperature Oxidation Resistance of Ti3AlC2 by Pre-oxidation at High Temperatures[J].Materials Research Innovations,2003,7:205-211. |
| [7] | Wang H J;Jina Z H;Miyamotob Y.Effect of Al2O3 on Mechanical Properties of Ti3SiC2/Al2O3 Composite[J].Ceramics International,2002(28):931-934. |
| [8] | Zan Qingfeng;Wang Chang;Huang Yong et al.The Interface-Layer and Interface in The Al2O3/Ti3SiC2 Multilayer Composites Prepared by in Situ Synthesis[J].Materials Letters,2003,57:382-3832. |
| [9] | 王苹,梅炳初,洪小林,朱教群,周卫兵,严明.热压合成Ti2AlC材料及热力学分析[J].武汉理工大学学报,2007(04):5-7. |
| [10] | N.V.Tzenov;M.W.Barsoum .Synthesis and characterization of Ti_3AlC_2[J].Journal of the American Ceramic Society,2000(4):825-832. |
| [11] | D.B. Lee;S.W. Park .High-temperature oxidation of Ti_3AlC_2 between 1173 and 1473 K in air[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):147-154. |
| [12] | Chaput L;Hug G;Pecheur P;Scherrer H .Thermopower of the 312 MAX phases Ti3SiC2, Ti3GeC2, and Ti3AlC2[J].Physical review, B. Condensed matter and materials physics,2007(3):5107-1-5107-5-0. |
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