New Approach to Durability of Glassceramic and Silicate Glass

Volodymyr P. Maslov

《International Journal of Material Science》 2卷4期 (2012/12) Pp. 123-128

並列摘要

The goal of this work is to determine correlation of amorphous nonmetallic materials with defective surface layers and their physical properties. Microcreep processes in tested materials can be described by general equation that is known as logarithmic microcreep equation. Applicability of this equation for tested optical materials is indicative for microcreep processes in crystalline and amorphous hard materials. For each grade of polished optical glass, minimal residual defective layer exists. Parameters of this layer are interrelated with mechanical properties of glassceramics and glass, such as microhardness and optical strain coefficient, and thermophysical properties, such as thermal diffusivity, sintering temperature, and annealing temperature. It is first suggested to estimate durability of optical silicate glass and glassceramic, using E⋅a^(1/2) parameter (E-elasticity modulus, a-thermal diffusivity).

並列關鍵字

Defective Layer ； Microcreep ； Durability ； Glassceramic ； Glass