摘要
The high porosity of FeAl/Al2O3 composites was successfully prepared via a low-energy consumption method of thermal explosion (TE) in vacuum from reactant mixtures of Fe, Al and Fe2O3. The temperature profiles, phase compositions, microstructure, porosity and pore size of the products were investigated. The TE reactions were ignited between 639 and 648 degrees C and maximum combustion temperatures reached to 1196-1867 degrees C. XRD patterns showed that FeAl, Fe2Al5 and Al2O3 were formed via TE reaction, and FeAl and Al2O3 were evolved as dominant phase after the final sintering at 1100 degrees C. The FeAl/Al2O3 composites exhibited an interconnected pore structure with porosities and pore size of 52-61% and 27-32 gm, respectively.
- 出版日期2018-3
- 单位西北有色金属研究院; 中国矿业大学(北京)