利用原位反应热压工艺制备了B4C/Al2O3基复合陶瓷,研究了TiB2含量和烧结温度对B4C/Al2O3基复合陶瓷力学性能和微观结构的影响.结果表明,当TiB2含量低于8.7％时,随原位反应生成的TiB2含量的增加,有效的促进了B4C/Al2O3/TiB2复合陶瓷的烧结,提高相对密度,改善了力学性能.当烧结温度低于1900℃时,其力学性能随烧结温度增加而提高；当超过1900℃时,其力学性能随烧结温度的提高而降低.在1900℃,60 min时,B4C/Al2O3/TiB2复合陶瓷获得最佳综合力学性能,其硬度、断裂韧性和抗弯强度分别为24.8 GPa、4.82 MPa·m1/2和445.2 MPa.
参考文献
| [1] | 刘宗德,陈蕴博,刘静静,林涛,姜超.电磁加速等离子喷涂法制备碳化硼涂层初步分析[J].材料热处理学报,2005(05):49-51. |
| [2] | D. Gosset;B. Provot .Boron carbide as a potential inert matrix: an evaluation[J].Progress in Nuclear Energy,2001(3/4):263-266. |
| [3] | Alizadeh A;Taheri-Nassaj E;Ehsani N .Synthesis of boron carbide powder by a carbothermic reduction method[J].Journal of the European Ceramic Society,2004,24(10-11):3227-3234. |
| [4] | Deng J X;Zhou J;Feng Y H et al.Microstructure and mechanical properties of hot-pressed B4C/(W,Ti)C ceramic composites[J].Ceramics International,2002,28(04):425-430. |
| [5] | Sigl L S .Processing and mechanical properties of boron carbide sintered with TiC[J].Journal of the European Ceramic Society,1998,18(11):1521-1529. |
| [6] | 孙军龙 .新型B<,4>C基复合陶瓷喷嘴研究开发及其冲蚀机理研究[D].山东大学,2007. |
| [7] | Suzuya Yamada;Kiyoshi Hirao;Yukihiko Yamauchi et al.High strength B4C-TiB2 composites fabricated by reaction hot-pressing[J].Journal of the European Ceramic Society,2003,23(07):1123-1130. |
| [8] | Suzuya Yamada;Kiyoshi Hirao;Yukihiko Yamauchi et al.Mechanical and electrical properties of B4C-CrB2 ceramics fabricated by liquid phase sintering[J].Ceramics International,2003,29(03):299-304. |
| [9] | Levin L.;Frage N. .A novel approach for the preparation of B_4C-based cermets[J].International Journal of Refractory Metals & Hard Materials,2000(2/3):131-135. |
| [10] | Lee BS.;Kang S. .Low-temperature processing of B4C-Al composites via infiltration technique[J].Materials Chemistry and Physics,2001(1/3):249-255. |
| [11] | Cai K F;Nan C W .The influence of W2B5 addition on microstructure and thermoelectric properties of B4C ceramic[J].Ceramics International,2000,26:523-527. |
| [12] | Hongyu Gong;Yansheng Yin;Xin Wang;Yingcai Liu .Fabrication and microstructure of in situ toughened Al_2O_3/Fe_3Al[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2004(4/5):513-521. |
| [13] | Ma Z.Y.;Tjong S.C. .IN-SITU Ti-TiB METAL-MATRIX COMPOSITE PREPARED BY A REACTIVE PRESSING PROCESS[J].Scripta materialia,2000(4):367-373. |
| [14] | Liu CX;Zhang JH;Sun JL;Zhang XH .Pressureless sintering of large-scale fine structural alumina matrix ceramic guideway materials[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):58-63. |
| [15] | Liu C X;Zhang J H;Sun J L et al.Addition of Al-Ti-B master alloys to improve the performances of alumina matrix ceramic materials[J].Ceramics International,2007,33(07):1319-1324. |
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