采用Co包覆Al2O3/TiC纳米级粉料进行了不同Co含量、不同烧结温度的热压烧结实验.对综合力学性能最佳的nATC8复合材料进行了工艺参数的优化,得出其优选工艺参数为,烧结温度1650℃,保温30min,热压30MPa.采用优选工艺参数制备的纳米复相陶瓷材料的硬度为92.7HRA,弯曲强度σf为782MPa,断裂韧性K1C为7.81MPa·m1/2.通过对其断口的观察,发现形成了晶内型结构,并观察到了裂纹曲折的扩展路径以及裂纹的分叉、偏转、桥联,这些有助于材料强度和韧性提高的现象.
参考文献
| [1] | Pernilla Pettersson;Mats Johnsson .Thermal shock properties of alumina reinforced with Ti(CN) whiskers[J].Journal of the European Ceramic Society,2003,23:309-313. |
| [2] | Konopka K;Ozieblo A .Microstructure and the fracture toughness of the Al2O3-Fe composites[J].Materials Characterization,2001,46:125-129. |
| [3] | 李廷凯;沈志坚;丁子上 .ZrO2-46[Z]. |
| [4] | 吴义权,张玉峰,黄校先,郭景坤.原位生长棒晶氧化铝陶瓷的制备[J].硅酸盐学报,2000(06):585-588. |
| [5] | Jerome Lalande;Sven Scheppokat;Rolf Janssen et al.Toughening of alumina/zirconia cerami composites with silver particles[J].Journal of the European Ceramic Society,2002,22:2165-2171. |
| [6] | Liden E.;Eklund L.;Nyberg B.;Carlsson R.;Carlstrom E. .HOMOGENEOUS DISTRIBUTION OF SINTERING ADDITIVES IN LIQUID-PHASE SINTERED SILICON CARBIDE[J].Journal of the American Ceramic Society,1995(7):1761-1768. |
| [7] | Djuricic B;Mcgarry D;Pickring S .The preparation of ultrafine ceria-stabilized zirconia particles coated with yittria[J].Journal of Materials Science Letters,1993,12:1320. |
| [8] | 杨静漪,张巨先,蔺玉胜,侯耀永.包覆法添加烧结助剂制备A12O3/SiCp复相陶瓷[J].青岛化工学院学报(自然科学版),2000(03):226-229. |
| [9] | Pernilla Pettersson;Mats Johnsson .Thermal shock properties of alumina reinforced with Ti(CN) whiskers[J].Journal of the European Ceramic Society,2003,23:309-313. |
| [10] | 周玉.陶瓷材料学[M].哈尔滨:哈尔滨工业大学出版社,1995:358-360. |
| [11] | Li H.;Sun JL.;Huang LP. .Effects of ductile cobalt on fracture behavior of Al2O3-TiC ceramic[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1/2):17-20. |
| [12] | 彭晓峰;黄校先;张玉峰 .高性能细晶粒氧化铝陶瓷材料的制备与研究[J].无机材料学报,1998,13(03):327-332. |
| [13] | Krstic V V;Nicholson P S;Hoagland R G .Toughening of glasses by metallic particles[J].Journal of the American Ceramic Society,1981,64(09):499. |
| [14] | Marshall D B;Morris W L .Toughening mechanisms in cemented carbides[J].Journal of the American Ceramic Society,1990,73(10):2938. |
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