Co-Al2O3金属陶瓷的制备与燃烧合成反应控制

应用燃烧合成法制备Co-Al2O3金属陶瓷,通过添加稀释剂Al2O3和反应性添加物TiO2控制燃烧合成反应,并探讨了其对金属陶瓷组织结构的影响。利用Al-Fe2O3助燃体系控制热爆反应的起始温度,使热爆反应在1050K左右进行,制备了Co-Al2O3金属陶瓷的中空件,并获得了金属相细小、均匀分布于陶瓷基体中的Co-Al2O3金属陶瓷。

Fabrication of Co-Al2O3 Cermets and Combustion Synthesis Reaction Control

Co-Al2O3 cermet was prepared by combustion synthesis , in which diluent Al2O3 and reactive agent TiO2 was added to control the combustion synthesis reaction process. Meanwhile, the effects of diluent Al2O3 and reactive agent TiO2 on microstructure of cermet have been approached. The hollow Co-Al2O3 cermet parts with fine and uniformly distributed metal phase in the Al2O3 matrix is successfully prepared by controlling initial reactive temperature of thermo-explosive reaction at about 1 050 K using Al-Fe2O3 assistant system.