硅酸盐学报2008，Vol.36Issue(8)：1168-1171,4.
陶瓷涂层三明治板的抗热震性
THERMAL SHOCK RESISTANCE OF THE CERAMIC COATED SANDWICH PLATE
摘要
Abstract
The transient temperature field and transient thermal stress field of a sandwich plate with double-sided ceramic coatings under the convective boundary condition were investigated by an analytical solution approach. Numerical calculations of transient thermal stresses for a plate of Al2O3 coating/ cemented carbide (WC-8%Co, mass fraction) substrate/Al2O3 coating system under different Biot numbers in thermal shock were performed. The effects of the coating-to-substrate thickness ratio and the thermo-physical properties matching of coating with substrate on the peak surface thermal stress of the ceramic coated sandwich plate were analyzed. The results reveal that the thermal conductivity, thermal expansion coefficient and Young's modulus of the substrate must be higher than that of the coating in the coated sandwich plate in order to reduce its surface thermal stress and obtain high thermal shock resistance. Furthermore, the coating must be as thin as possible in order to improve the thermal shock resistance of the coating on the surface of the coated cutting tools.关键词
三明治板/陶瓷涂层/瞬态温度场/瞬态热应力场/抗热震性Key words
sandwich plate/ceramic coatings/transient temperature field/transient thermal stress field/thermal shock resistance分类
化学化工引用本文复制引用
李艳征,赵军,艾兴..陶瓷涂层三明治板的抗热震性[J].硅酸盐学报,2008,36(8):1168-1171,4.基金项目
国家自然科学基金(50575126) （50575126）
全国优秀博士学位论文作者专项资金(200231) （200231）
高等学校博士学科点专项科研基金(20050422033)资助项目. （20050422033）
