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Investigation on Synthesis and Properties of Nano Crystalline Zirconia Ceramics


Post Date: 27 Nov 2010    Viewed: 3977

This dissertation scrutinizingly discusses the synthesis and molding mechanism in detail, especially the stability of nano crystalline zirconia ceramics, provides some comprehensive theoretical basis and experiment data about aggregation control of nano particulate materials under the effect of outfield. The mian works are as follows:(1)By coprecipitation technique and coprecipitation- gel technique the nano zirconia powder was produced, factors affecting the properties of nano zirconia powder such as pH and the content of stabilizator are analyzed;(2)By the new pressless sintering process, the nano zirconia ceramic was produced, factors which can affecting the properties of nano zirconia sinter body such as moulding press and the sinter temperature are analyzed;(3)By the microtherm pressless sintering process, the nano copper added functional zirconia ceramic composite was produced, microscopic dimensionality and electric properties of such sinter body and the factors affecting such sinter body are analyzed;(4)By the self-invented "external albumen coating" technique the zirconia powder (group) was successfully coated by carbon in the corresponding sinter body, which can help solve the traditional aggregation problem to some degree;(5)Based on analyze the characteristics in the nano powder sinter process, the "three-ball sinter model" was proposed, for the relationship between the relative density and porosity of sinter body, by mathematical fitting, such model was successfully verified.

 


Superhard Material of China

Superhard Material of China

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Abrasives and Grinding Products of China

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Coated Abrasives of China

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China International Abrasives & Grinding Exposition

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