在Ar气氛保护下，以钛粉、硅粉、石墨粉和金刚石粉为原料，采用无压烧结技术制备Ti3SiC2-金刚石复合材料。研究烧结温度对制备的复合材料中Ti3SiC2含量及金刚石转变的影响。结果表明：1400℃为制备Ti3SiC2-金刚石复合材料的最佳反应温度，高于此温度金刚石大量石墨化，低于此温度Ti3SiC2不能有效合成；生成的Ti3SiC2包裹在金刚石颗粒表层，两者之间存在明显的过渡区，表明在高温条件下金刚石颗粒表层发生石墨化相变；石墨化的碳元素参与Ti3SiC2合成反应，明显改善Ti3SiC2相与金刚石颗粒界面润湿性，提高Ti3SiC2与金刚石颗粒之间的界面结合力。
Ti3SiC2-diamond composites were synthesized by pressureless sintering under flowing Ar atmosphere with the powders of Ti,Si,graphite and diamond. The effect of sintering temperatures on Ti3SiC2 content and diamond transformation was studied. The experimental results show that 1 400℃is the optimal temperature to synthesize desired composites. Higher temperature will result in the graphitization of diamonds. Lower temperature can not synthesize Ti3SiC2 effectively. The scanning electron microscopic analysis of as-synthesized composites shows that diamond particles are enclosed by synthesized Ti3SiC2,and obvious transition zones exist between diamond particles and Ti3SiC2. It is concluded that the graphite transformed from the surface layer of diamonds joins in the reaction of Ti3SiC2 synthesis,which significantly improves the interface wettability and increases the interface bonding between Ti3SiC2 and diamond particles.
参考文献
| [1] | MichelW. Barsoum;Miladin Radovic.Elastic and Mechanical Properties of the MAX Phases[J].Annual review of materials research,2011:195-227. |
| [2] | 贾换,尹洪峰,袁蝴蝶,杨祎诺.TiC/Ti3SiC2复合材料的制备及其性能研究[J].兵器材料科学与工程,2012(06):45-48. |
| [3] | Liang Li;Aiguo Zhou;Libo Wang;Shangsheng Li;Dongxu Wu;Chengqi Yan.In situ synthesis of cBN-Ti_3AlC_2 composites by high-pressure and high-temperature technology[J].Diamond and Related Materials,2012:8-12. |
| [4] | 陈盼军,尹洪峰,潘丽青,袁蝴蝶,孙高磊.热压制备Ti3SiC2/MgAl2O4复合材料及其性能研究[J].兵器材料科学与工程,2011(05):53-56. |
| [5] | 张宇民,张建寒,韩杰才,赫晓东.燃烧合成多孔碳化硅陶瓷基复合材料[J].兵器材料科学与工程,2003(04):14-17. |
| [6] | 李良,周爱国.Ti3SiC2复合材料的研究进展[J].硅酸盐通报,2011(05):1114-1117,1141. |
| [7] | Shi-Bo Li;Jian-Xin Xie;Li-Tong Zhang .Mechanical properties and oxidation resistance of Ti_3SiC_2/SIC composite synthesized by in situ displacement[J].Materials Letters,2003(20):3048-3056. |
| [8] | S.-B. Li;J.-X. Xie;L.-T. Zhang .In situ synthesis of Ti_3SiC_2/SiC composite by displacement reaction of Si and TiC[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):51-56. |
| [9] | Zhang JF;Wang LJ;Shi L;Jiang W;Chen LD .Rapid fabrication of Ti3SiC2-SiC nanocomposite using the spark plasma sintering-reactive synthesis (SPS-RS) method[J].Scripta materialia,2007(3):241-244. |
| [10] | Microstructure and properties of Ti_3SiC_2/SiC nanocomposites fabricated by spark plasma sintering[J].Composites science and technology,2008(2):p.499. |
| [11] | He, X.;Bai, Y.;Li, Y.;Zhu, C.;Kong, X. .In situ synthesis and mechanical properties of bulk Ti_3SiC_2/TiC composites by SHS/PHIP[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2010(18/19):4554-4559. |
| [12] | S. Konoplyuk;T. Abe;T. Uchimoto .Synthesis of Ti_3SiC_2/TiC composites from TiH_2/SiC/TiC powders[J].Materials Letters,2005(18):2342-2346. |
| [13] | Jaworska L .Diamond composites with TiC,SiC and Ti3SiC2 bonding phase[J].International Journal of High Pressure Re-search,2002,22(03):531-533. |
| [14] | Yunchao Mu;Jifeng Guo;Baoyan Liang .Rapid fabrication of the Ti_3SiC_2 bonded diamond composite by spark plasma sintering[J].International Journal of Refractory Metals & Hard Materials,2011(3):397-400. |
| [15] | Zhou A G;Li L;Su T C et al.Synthesize Ti3SiC2 and Ti3SiC2-diamond composites at high pressure and high temperature[J].Key Engineering Materials,2012,512/513/514/515:671-675. |
| [16] | Zheng Ming Sun;Songlan Yang;Hitoshi Hashimoto .Synthesis and Consolidation of Ternary Compound Ti_3SiC_2 from Green Compact of Mixed Powders[J].Materials transactions,2004(2):373-375. |
| [17] | H. Li;D. Chen;J. Zhou .Synthesis of Ti_3SiC_2 by pressureless sintering of the elemental powders in vacuum[J].Materials Letters,2004(11):1741-1744. |
| [18] | Sato F.;Li J.-F .Reaction Synthesis of Ti_3SiC_2 from Mixture of Elemental Powders[J].Materials transactions,2000(5):605-608. |
| [19] | 李开雄,吕振林.熔渗烧结制备Ti_3SiC_2反应机理的研究[J].兵器材料科学与工程,2009(04):77-80. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%