Abstract
Abstract This paper reviews the important work to date describing the effect of environment (particularly H2O) on the fracture behavior of glasses, single crystals and polycrystalline ceramics. It is shown that since the environment predominantly affects rates of crack propagation, fracture mechanics techniques have proved useful in describing the phenomenon of ⪡ stress corrosion ⪢ in ceramics. Models describing the environment- crack interaction are presented and mechanisms of crack propagation are discussed. The temperature dependence of ⪡ stress corrosion ⪢ in ceramics is described and the effect of plastic deforcation on a material's environmental sensitivity is briefly discussed. Finally, future research topics are suggested.
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