莫来石氧化锆－钛酸铝复相陶瓷的抗热震性

THERMAL SHOCK-RESISTANCE OF 3Al_2O_32SiO_2-Zr_O2-Al_2TiO_5 CERAMICS

莫来石具有低的热膨胀系数，氧化锆增韧的ＺＴＭ复相陶瓷材料，因其高的力学性能和低的热膨胀系数而在高温条件下显示出较低的热应力，因而得到广泛的应用。文中通过在该复相陶瓷中引入热膨胀系数更低的钛酸铝（Ａｌ２ＴｉＯ５）组分，探讨其热学行为，以改善其抗热震性的目的。

Mullite has low thermal expansion coefficient.ZrO2-toughened ZTM composite has been widely used at high-temperature because of its lower thermal stress. In the current experiment,Al2TiO5 composition,which has lower thermal expansion coefficient,was added to the ceramics in order to improve its thermal shock-resistance..