3. Operating mechanisms

3.1 Ceramic wear-initiating factors

Ceramics are not immune to several mechanisms that initiate the transition to severe wear, such as :

phase transitions (e.g. with ZrO ₂ ) ;
intergranular stress due to the elastic and thermophysical anisotropies of the crystal (e.g. with Si ₃ N ₄ , Al ₂ O ₃ ) ;
sublimation of oxides (e.g. with WC, WO ₃ );
the formation of glassy layers...

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Operating mechanisms

(1) - RICHARD (C.) - Tribology at high temperature : comparison of the tribological behaviour of ceramic composites against steel at 700 °C in unlubricated and water lubricated conditions. - 21 ^th Int. Conf. on Surface Modification Technologies XXI (SMT21) – Paris. Sci Editors : T. S. Sudarshan...