以微米级B4C粉体为原料,通过与TiO2和葡萄糖原位反应制备TiB2颗粒增韧B4C复合材料.研究了烧结温度和烧结助剂对材料烧结行为及力学性能的影响.在1950℃反应热压下获得了相对密度为97.7%的TiB2/B4C复合材料,断裂韧性达到5.3 Mpa·m1/2.添加Al2O3和Si烧结助剂后,分别在1950℃和1900℃获得了接近致密的(TiB2,Al2O3)/B4C和(TiB2,SiC)/B4C复合材料,断裂韧性分别提高到7.09和6.35 Mpa·m1/2.显微组织分析表明,增韧作用主要来自残余应力引起的裂纹偏转.
参考文献
| [1] | 祝宝军,肖汉宁,陶颖,裴立宅.碳化硼陶瓷活化烧结技术进展[J].硬质合金,2004,21(2):116-120.Zhu Baojun,Xiao Hanning,Tao Ying,Pei Lizai.Sintering activation technology of boron carbide[J].Cemented Carbide,2004,21(2):116-120. |
| [2] | Johnson W C.Advanced materials and powders[J].Am Ceram Soc Bull,2001,80:64-66. |
| [3] | 李爱菊,尹衍升,甄玉花,师瑞霞,王磊.(SiC,TiB2)/B4C复合材料的烧结机理[J].复合材料学报,2004,21(4):129-133.Li Aiju,Yin Yansheng,Zhen Yuhua,Shi Ruixia,Wang Lei.Sintering mechanism of (SiC,TiB2)/B4C composite[J].Acta Materiae Composite Sinica,2004,21(4):129-133. |
| [4] | Goldstein Adrian,Yeshurun Yehoshoa,Goldenberg Ayala.B4C/metal boride composites derived from B4C/metal oxide mixtures[J].Journal of the European Ceramic Society,2007,27(2/3):695-700. |
| [5] | 穆柏春,张辉,唐立丹.制备工艺对碳化硼陶瓷性能的影响[J].粉末冶金技术,2007,25(4):275-280.Mu Baichun,Zhang Hui,Tang Lidan.Influence of the preparation technology on the properties of boron carbide[J].Powder Metallurgy Technology,2007,25(4):275-280. |
| [6] | Skorokhod V,Krstic V D.High strength-high toughness B4C-TiB2 composites[J].J Mater Sci Lett,2000,19(3):237-239. |
| [7] | 王零森,尹邦跃,方寅初.用掺碳活化烧结技术制取碳化硼材料[J].中国有色金属学报,2002,12(6):1210-1213.Wang Lingsen,Yin Bangyue,Fang Yanchu.Boron carbide material fabricated by carbon-doping activated sintering[J].The Chinese Journal of Nonferrous Metals,2002,12 (6):1210-1213. |
| [8] | Yamadaa Suzuya,Hirao Kiyoshi,Yamauchi Yukihiko,Kanzaki Shuzo.High strength B4C-TiB2 composites fabricated by reaction hot-pressing[J].Journal of the European Ceramic Society,2003,23(7):1123-1130. |
| [9] | 陈肇友.化学热力学与耐火材料[M].北京:冶金工业出版社,2005:83-87. |
| [10] | Telle R,Petzow G.Reaction sintering of boron carbide with silicon and titanium[J].Horiz Powder Metall,1986,2:1155-1156. |
| [11] | Li Aiju,Zhen Yuhua,Yin Qiang,Ma Laipeng,Yin Yansheng.Microstructure and properties of (SiC,TiB2)/B4C composites by reaction hot pressing[J].Ceramics International,2006,32(8):849-856. |
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