化学强化后玻璃应力松驰与再加热温度的对应关系

The Corresponding Relationship Between Glass Stress Relaxation and Reheating Temperature after Chemical Reinforcement

高铝玻璃通过化学强化后,获得一定的表面应力(CS)和应力层深度(DOL),当它被再次加热(或退火)时,其表面的应力会产生松驰现象,松驰程度与加热温度及玻璃本身的黏温特性有着对应关系;当加热温度达到玻璃自身的转变点(T_g)温度时,应力松驰达到极限,即玻璃表面应力被全部松驰,CS、DOL值回到零。

high alumina glass obtain certain surface stress( CS) and stress depth( DOL) through chemical reinforcement. When it is reheated(or annealed), the surface stress causes relaxation, The degree of relaxation is related to the heating temperature and the viscosity-temperature characteristics of the glass;When the heating temperature reaches the transition point(T_g)temperature of the glass, stress relaxation reaches its limit, that is, the glass surface stress is completely relaxed, CS、DOL value return to zero.