Sintering technology research of Fe3Al/Al2O3 ceramic composites

Fe3Al/Al2O3 ceramic composites are some of the novel ceramic composites tha t have good application prospects as cutting tools and forming dies. In thi s paper, the effects of different sintering technologies on the microstruct ure of these composites are compared and analysed, the optical micrograph o f the composite sample made by different ratio and hot press sintering tech nology being observed and studied. The results of experiment indicate that Fe3Al/Al2O3 composites with fine grains, compact structure and good mechani cal properties can be obtained at about 1400 degreesC. Furthermore, in addi tion to the sintering pressure, the content of Al2O3 and the additives of t he composites, also have an important influence on their sintering temperat ure, microstructure and characteristics. When adjusting the factors appropr iately, the composites can be sintered at low temperature. (C) 2001 Elsevie r Science B.V. All rights reserved.