논문 상세보기
pp.253-258
The characteristics of ceramics were influenced by the additives and the heat treatment that controls the microcrack behavior at grain boundaries. The effect of additives on ceramics were investigated in terms of mechanical properties and thermal expansion at high temperature. The were synthesized at , and for 2h by reaction sintering. The formation of phase was increased by additives that enhanced the volume of the microcrack that can lead to low thermal expansion. The mechanical properties of the stabilized ceramics were increased remarkably at , and due to the oneset of mechanical healing of grain-bondary microcracks at a high temperature. The amount of microcrack was decreased at lower sintering temperature that causes the increase of mechanical properties at high temperature.
