以Si粉为烧结助剂,采用真空热压烧结工艺制备B4C-SiCw陶瓷复合材料.将不同含量的SiCw与B4C和Si混合,制得的复合粉体在1850℃、60MPa下真空热压烧结,研究了SiCw含量对复合材料力学性能的影响,并借助X射线衍射、扫描电镜分析了复合材料的物相组成和微观结构.研究结果表明:分散处理后的SiCw可以有效地提高复合材料的力学性能,当晶须含量为10％(质量分数)时,弯曲强度和断裂韧性达到最大值,分别为468 MPa和5.70 MPa·m1/2.复合材料中SiCw的拔出使复合材料的弯曲强度及断裂韧性得以提高.
参考文献
| [1] | S. Mondal;A. K. Banthia .Low-temperature synthetic route for boron carbide[J].Journal of the European Ceramic Society,2005(2/3):287-291. |
| [2] | YAMADA S;H1RAO K;YAMAUCHI Y .High strength B4CTiB2 composites fabricated by reaction hot-pressing[J].Journal of the European Ceramic Society,2003,23:1123-1130. |
| [3] | SRIVATSAN T S;GURUPRASAD G;BLACK D .Influence of TiB2 content on microstructure and hardness of TiB2-B4 C composite[J].Powder Technology,2005,159:161-167. |
| [4] | YAMADA S;HIRAO K;YAMAUCHI Y .Mechanical and electrical properties of B4C-CrB2 ceramics fabricated by liquid phase sintering[J].Ceramics International,2003,29:299-304. |
| [5] | DENG J;ZHOU J;FENG Y .Microstructure and mechanical properties of hot-pressed B4C/(W,Ti)C ceramic composites[J].Ceramics International,2002,28:425-430. |
| [6] | Radev DD.;Zakhariev Z. .Structural and mechanical properties of activated sintered boron carbide-based materials[J].International Journal of Quantum Chemistry,1998(1):1-5. |
| [7] | HALVERSON;DANNY C .Processing of boron carbide-aluminum composites[J].Journal of the American Ceramic Society,1989,72(05):775-780. |
| [8] | TUROV;YU V.Structure formation under sintering of powder iron-boron carbide composite[J].Poroshkovaya Metallurgiya,1991(06):25-31. |
| [9] | LANGE R G .Sintering kinetics of pure and doped boron carbide[J].Materials Science Research,1980,13:311-320. |
| [10] | 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. |
| [11] | 蒋国新;王声宏 .碳化硼的低温热压[J].粉末冶金技术,1995,13(02):108-111. |
| [12] | 邓建新;艾兴 .Al2O3/TiB2/SiCw三元复合材料的力学性能及显微结构[J].复合材料学报,1996,13(03):27-33. |
| [13] | 张明;赵波;刘传绍.SiCw/ZrO2陶瓷复合材料品须增韧机理与效果预测研究[J].材料与表面处理技术,2006(12):64-66. |
| [14] | 缪世群,葛存旺.SiCw-ZTA陶瓷基复合材料增韧、增强机理的分析[J].南通工学院学报,2001(01):20-23. |
| [15] | 蒋阳;许煜汾 .SiCw/ZTA (Y)陶瓷基复合材料[J].粉末冶金技术,1997,15(03):169-173. |
| [16] | 缪世群,佘正国,葛存旺.SiC晶须的分散与涂覆工艺的研究[J].江苏理工大学学报（自然科学版）,2000(02):52-56. |
| [17] | 魏红康,张玉军,龚红宇.热压烧结工艺制备SiC/B4C复合材料[J].硅酸盐通报,2009(02):249-252. |
| [18] | Hayun S;Frage N;Dariel MP .The morphology of ceramic phases in BxC-SiC-Si infiltrated composites[J].International Journal of Quantum Chemistry,2006(9):2875-2879. |
| [19] | 张希华,张建华,刘长霞.氧化铝基陶瓷材料增韧研究现状及其发展方向[J].山东大学学报（工学版）,2004(05):14-17. |
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%