以鳞片石墨,B4C,SiC,TiO2为原料,利用包覆工艺在不同热压温度下制备了w(C)=50%的C-SiC-B4C-TiB2复合材料,并详细研究了热压温度对复合材料显微组织和性能的影响规律.结果表明,当热压温度高于1 850 ℃时,复合材料由C,SiC,B4C和TiB2这四相组成;复合材料的体积密度、抗折强度和断裂韧性均随着热压温度的升高而增加.2 000 ℃热压时,复合材料的体积密度、气孔率、抗折强度和断裂韧性分别达到2.41 g/cm3,3.42%,176 MPa和6.1 MPa·m1/2;热压温度升高,复合材料的碳相和陶瓷相逐渐致密,碳相最终形成了在陶瓷基体上镶嵌的直径为40 μm橄榄球状和条状这两种形貌.碳/陶瓷相的弱界面分层诱导韧化和第二相TiB2与陶瓷基体之间热膨胀系数不匹配所致的残余应力使变形过程中微裂纹的扩展路径发展变化,使复合材料的韧性提高.
参考文献
| [1] | Zhuangjun F;Yongzhong S;Jiangang L .Oxidation behavior of fine-grained SiC-B4C/C composites up to 1 400 ℃[J].CARBON,2003,41:429-435. |
| [2] | Zhang WG.;Sano H.;Uchiyama Y.;Kobayashi K.;Zhou LJ.;Shen ZH.;Zhou BL.;Cheng HM. .The effects of nanoparticulate SiC upon the oxidation behavior of C-SiC-B4C composites[J].Carbon: An International Journal Sponsored by the American Carbon Society,1998(11):1591-1595. |
| [3] | 喻亮,茹红强,薛向欣,左良.C鳞片-SiC-B4C复合材料板烧蚀数值模拟[J].东北大学学报（自然科学版）,2006(11):1240-1243. |
| [4] | Guo Q S;Song J;Liu L .Oxidation protection of graphite and B4C-modified graphite by a SiC coating[J].Carbon,1999,37:147-163. |
| [5] | Michio Ingaki .Reseach and development on carbon/ceramic composite in Japan[J].CARBON,1991,29(03):297. |
| [6] | Labruquere S;Blanchard H;Pailler R .Oxidation resistance of B-C,Si-B-C and Si-C coated carbon performs densified with carbon[J].Journal of the European Ceramic Society,2001,22(2002):2-11. |
| [7] | 黄启忠.TiC对C-B4C-SiC复合材料显微结构与性能的影响[J].炭素,1995(02):9-12. |
| [8] | 黄启忠;杨巧勤;黄伯云 等.原料种类对C-B4C-SiC复合材料性能的影响[J].中南大学学报,1995,26(02):223. |
| [9] | 黄启忠;肖汉宁;石强 等.Al对热压烧结C-B4C-SiC复合材料性能的影响[J].陶瓷研究,1994,9(01):20-23. |
| [10] | 颜冲;肖汉宁;杨巧勤 等.碳相含量对C-SiC-TiB2复合材料结构和力学性能的影响[J].陶瓷研究,1999,14(03):5-8. |
| [11] | Labruquere S;Blanchard H;Pailler R .Oxidation resistance of B-C,Si-B-C and Si-C coated carbon performs densified with carbon[J].Journal of the European Ceramic Siociety,2002,22(07):2-11. |
| [12] | T. SOGABE;T. MATSUDA;K. KURODA;Y. HIROHATA;T. HINO;T. YAMASHINA .PREPARATION OF B_4C-MIXED GRAPHITE BY PRESSURELESS SINTERING AND ITS AIR OXIDATION BEHAVIOR[J].Carbon: An International Journal Sponsored by the American Carbon Society,1995(12):1783-1788. |
| [13] | Kobayashi K.;Sano H.;Uchiyama Y.;Maeda K. .FORMATION AND OXIDATION RESISTANCE OF THE COATING FORMED ON CARBON MATERIAL COMPOSED OF B4C-SIC POWDERS[J].Carbon: An International Journal Sponsored by the American Carbon Society,1995(4):397-403. |
| [14] | Labruquere S;Blanchard H;Pailler R .Oxidation resistance of B-C,Si-B-C and Si-C coated carbon performs densified with carbon[J].Journal of the European Ceramic Society,2001,22(2002):2-11. |
| [15] | Wu Lijun;Huang Qizhong;Yang Qiaoqin;Zhao Lihu;Xu Zhongyu .Effect of sintering temperature on structure of C-B4C-SiC composites with silicon additive[J].Scripta materialia,1996(1):123-127. |
| [16] | Ogawa I;Kobayashi K;Nishikawa S .Oxidation resistance of carbon-ceramics composite materials sintered from ground powder mixtures of raw coke and ceramics[J].Journal of Materials Science,1988,23:1363-1367. |
| [17] | Yamamoto O.;Inagaki M.;Sasamoto T. .Effect of mullite coating film on oxidation resistance of carbon materials with SiC-gradient[J].Journal of Materials Science Letters,2000(12):1053-1055. |
| [18] | Valentine PG.;Winter J.;Linke J.;Kaae JL.;Schuster A. Bolt H.;Duwe R.;Wallura E.;Philipps V.;Trester PW. .B4C-SIC REACTION-SINTERED COATINGS ON GRAPHITE FOR PLASMA FACING COMPONENTS[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,1995(0):756-761. |
| [19] | Fergus JW.;Worrell WL. .SILICON-CARBIDE/BORON-CONTAINING COATINGS FOR THE OXIDATION PROTECTION OF GRAPHITE[J].Carbon: An International Journal Sponsored by the American Carbon Society,1995(4):537-543. |
| [20] | 喻亮,茹红强,蔡继东,杨超,左良,薛向欣.热压C-SiC-B4C-TiB2复合材料的组织与力学性能[J].中国有色金属学报,2008(02):271-277. |
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%