以Ti、B4C和SiC晶须(SiCw)为原料,采用自蔓延高温合成法制备了多孔TiB2-TiC复合材料.讨论了SiCw含量对TiB2-TiC复合材料物相、组织形貌、孔隙率和抗压强度的影响.结果表明:不添加SiCw时,复合材料中主要物相为贫硼相TiB和Ti3B4以及TiC和少量TiB2;在5Ti+B4C体系中加入SiCw后,贫硼相TiB和Ti3B4逐渐减少直至消失,而出现富硼相TiB2和TiC的含量增加.随着SiCw含量的增加,复合材料的孔隙率逐渐增加,由38.46％增加至52.78％.当SiCw含量小于1.0时,随着SiCw含量的增加,多孔TiB2-TiC复合材料的抗压强度明显增加,当SiCw含量为1.0时,复合材料的抗压强度达到最大值56.04 MPa.Ti与SiCw反应会生成TiC、Ti3SiC2和TiSi2等物相,消耗一定量的Ti,使得与B4C反应的Ti量减少,从而促进富硼相TiB2形成和TiC的增多.并且在SiCw表面形成颗粒状TiC或者层片状Ti3SiC2,增加SiCw与TiB2-TiC基体之间的结合,更有利于发挥SiCw的强化作用.
参考文献
| [1] | Bhaumik SK.;Singh AK.;Upadhyaya GS.;Divakar C..Synthesis and sintering of TiB2 and TiB2-TiC composite under high pressure[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20001/2(1/2):275-281. |
| [2] | 潘传增;张龙;赵忠民;曲振生;杨权.超重力下燃烧合成TiB_2-TiC共晶复合陶瓷[J].复合材料学报,2010(1):109-117. |
| [3] | Farid Akhtar;Faizul Hasan.Reactive sintering and properties of TiB_2 and TiC porous cermets[J].Materials Letters,20088/9(8/9):1242-1245. |
| [4] | 谢继峰;曹顺华;张秀芳;李文超.反应烧结制备多孔TiB2-TiC复相陶瓷[J].中国有色金属学报,2009(8):1468-1472. |
| [5] | 蒋军;朱德贵;王良辉;张波.添加剂镍对原位合成TiB2-TiC复相陶瓷材料性能的影响[J].稀有金属,2003(4):421-425. |
| [6] | Y. H. Liang;H. Y. Wang;Y. F. Yang.Effect of Cu content on the reaction behaviors of self-propagating high-temperature synthesis in Cu-Ti-B_4C system[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20081/2(1/2):113-118. |
| [7] | 王新洪;潘向宁;杜宝帅;李帅.激光熔覆B4C-TiO2-Al粉末制备原位TiB2+TiC/Fe复合涂层[J].中国有色金属学报（英文版）,2013(6):1689-1693. |
| [8] | J. Cabrero;F. Audubert;R. Pailler.Fabrication and characterization of sintered TiC-SiC[J].Journal of the European Ceramic Society,20113(3):313-320. |
| [9] | F.A Deorsola;I.C. Atias Adrian;G.A. Ortigoza Villalba;B. DeBenedetti.Nanostructured TiC-TiB_2 composites obtained by adding carbon nanotubes into the self-propagating high-temperature synthesis process[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,20117(7):995-999. |
| [10] | Lin, J.;Zhang, X.;Han, W.;Jin, H..The hybrid effect of SiC whisker coupled with ZrO _2 fiber on microstructure and mechanical properties of ZrB _2-based ceramics[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2012:187-191. |
| [11] | 李书海;崔洪芝;郑文龙;崔德运.SiCw对反应烧结多孔Al2TiO5-SiCw复合材料的影响[J].复合材料学报,2014(5):1270-1276. |
| [12] | Smirnov BI.;Orlova TS.;Shpeizman VV.;de Arellano-Lopez AR.;Goretta KC.;Singh D.;Routbort JL.;Nikolaev VI..Mechanical properties and microstructure of an Al2O3-SiC-TiC composite[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,19981/2(1/2):292-295. |
| [13] | Ying Peng;Zhijian Peng;Xiaoyong Ren.Effect of SiC nano-whisker addition on TiCN-based cermets prepared by spark plasma sintering[J].International Journal of Refractory Metals & Hard Materials,2012Sep.(Sep.):36-40. |
| [14] | Hitoshi Taimatsu;Shigeaki Sugiyama;Shuhou Koseki.Synthesis of TiB_2-TiC-Ti_3SiC_2 Composites by Reactive Hot Pressing of B_4C-SiC-Ti Powder Mixtures[J].Materials transactions,200810(10):2335-2340. |
| [15] | Chao Qin;Lianjun Wang;Wan Jiang.Microstructure Characterization and Mechanical Properties of TiSi_2-SiC-Ti_3SiC_2 Composites Prepared by Spark Plasma Sintering[J].Materials transactions,20063(3):845-848. |
| [16] | 王业亮;傅正义;王皓;张金咏.TiB2-TiC复合粉的自蔓延高温还原合成[J].复合材料学报,2003(1):16-21. |
| [17] | B. Aminikia.Investigation of the pre-milling effect on synthesis of nanocrystalline TiB2-TiC composite prepared by SHS method[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2012:78-86. |
| [18] | Jilin Wang;Laiping Zhang;Yunle Gu;Xinye Pan;Guowei Zhao;Zhanhui Zhang.A self-propagation high-temperature synthesis and annealing route to synthesis of wave-like boron nitride nanotubes[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,20133(3):943-947. |
| [19] | Mrinalini Mishra;Yoshio Sakka;Tohru S. Suzuki.Electrophoretic Deposition of Ti_3SiC_2 and Texture Development in a Strong Magnetic Field[J].Journal of the American Ceramic Society,20129(9):2857-2862. |
| [20] | 王苹 .Ti-Al-C体系热力学分析及动力学机理研究[D].武汉理工大学,2008. |
| [21] | D. Vallauri;I.C.Atias Adrian;A. Chrysanthou.TiC-TiB_2 composites: A review of phase relationships, processing and properties[J].Journal of the European Ceramic Society,20088(8):1697-1713. |
| [22] | Jin SB;Shen P;Zou BL;Jiang QC.Morphology Evolution of TiCx Grains During SHS in an Al-Ti-C System[J].Crystal growth & design,20092(2):646-649. |
| [23] | 吕维洁;张小农;张荻;吴人洁;卞玉君;方平伟.原位合成TiB/Ti基复合材料增强体的生长机制[J].金属学报,2000(1):104-108. |
| [24] | I. I. Ivanova;A. N. Demidik;M. V. Karpets;L. I. Kopylova;N. A. Krylova;A. P. Polyshko;S. A. Firstov.SYNTHESIS OF TITANIUM SILICON CARBIDE Ti_3SiC_2 UNDER ISOTHERMAL SINTERING[J].Powder Metallurgy and Metal Ceramics,20127/8(7/8):437-446. |
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