利用低放热Al-TiO2反应体系部分取代高放热A1-CoO反应体系,并加入适量的稀释剂Al2O3吸收反应热量,通过热爆燃烧合成结合致密化工艺制备了铁磁性Co(Ti)-Al2O3金属陶瓷.研究表明,Co(Ti)-Al2O3金属陶瓷中随着AlTiO2体系的增加,燃烧反应温度降低,金属相尺寸减小,分布更均匀,同时在金属相与基体之间形成过渡区域,提高了界面结合.Co(Ti)-Al2O3复合材料的饱和磁化强度随着金属Co含量增加而增加,最高可达到37.2849Am2/kg,而矫顽力在3997.6～5615.4A/m范围内变化,介于软磁体和硬磁体之间.
参考文献
| [1] | 李荣久.陶瓷-金属复合材料[M].北京:冶金工业出版社,1995 |
| [2] | HORVITZ D;GOTMAN I;GUTMANAS E Y et al.In situ processing of dense Al2O3-Ti aluminide interpenetrating phase composites[J].Journal of the European Ceramic Society,2002,22(06):947-954. |
| [3] | MARCIN C;KATARZYNA P .Processing,microstructure and mechanical properties of Al2O3-Cr nanocomposites[J].Journal of the European Ceramic Society,2007,27(2-3):1273-1279. |
| [4] | JI Y;YEOMANS J A .Processing and mechanical properties of Al2O3-5 vol% Cr nanocomposites[J].Journal of the European Ceramic Society,2002,22(12):1927-1936. |
| [5] | MILEǐKO S.Metal and ceramic based composites[M].Amsterdam:Elsevier Science,1997 |
| [6] | X.Y. Qin;R. Cao;J. Zhang .Mechanical and magnetic properties of gamma-Ni-xFe/Al_2O_3 composites[J].Composites science and technology,2007(7/8):1530-1540. |
| [7] | C. Tien;E.V. Charnaya;V.M. Gropyanov .Magnetic properties of a cermet on the base of Al_(2)O_(3)[J].Journal of Magnetism and Magnetic Materials,2000(2/3):147-151. |
| [8] | 殷声.燃烧合成[M].北京:冶金工业出版社,1999 |
| [9] | Zeng X.;Sun G. .COMBUSTION SYNTHESIS OF Al_2O_3(-Cr_2O_3)-Cr CERMETS[J].Scripta materialia,2000(12):1167-1172. |
| [10] | 张传,潘冶,张衍诚,孙国雄.燃烧合成制备Al2O3基金属陶瓷的研究现状与展望[J].材料导报,2004(06):47-50. |
| [11] | 金华峰.Al2O3/Fe表面复合材料的燃烧合成及组织分析[J].热加工工艺,2009(14):76-78. |
| [12] | 虞党奇;易文质;陈邦迪.二元合金状态图集[M].上海:上海科学技术出版社,1987 |
| [13] | 李国军,黄校先,郭景坤.Al2O3基金属陶瓷界面润湿性的改善[J].材料导报,2001(04):33-34,22. |
| [14] | Sung-Tang Oh;Mutsuo Sando;Koichi Niihara .Processing and properties of Ni-Co alloy dispersed Al_2O_3 nanocomposites[J].Scripta materialia,1998(10):1413-1418. |
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%