ZrO2 based materials treatments and microstructures

The management of the toughening is dehcate excessively stabilized, a zirconia exhibits mechanical properties that are hardly improved insufficiently stabilized, it can be subjected to destructive phases transformation. Furthermore, we must negotiate between the reinforcement of toughness and the reinforcement of mechanical strength. Other factors also intervene, like resistance to temperature 

The stabilization of Zr02-t can be achieved by i) additions of bivalent or trivalent metals, which introduce oxygen vacancies Ca, Mg +, Gd, Fe +, Ga and and ii) trivalent cations but of size higher or lower than that of Zr + Ti, Ge + and Ce +. 

To conclude on zirconias with mechanical uses, we must underline that TT mechanisms cease to operate at temperatures too close to the Mg point TTCs therefore do not compete with non-oxide ceramics like SiC or Si3N4, which have been developed to offer high mechanical strength or creep resistance at high 

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