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Home » Technologies & Materials » Technical Ceramics » Microstructural and Electrical Characteristics of Sintered Aluminous Porcelain Insulators

Microstructural and Electrical Characteristics of Sintered Aluminous Porcelain Insulators

In the present investigation, changes in the microstructural and electrical
behaviour of aluminous porcelain insulator bodies with variation
of the Al2O3 : SiO2 mole ratio from 0,15–0,70 due to substituting
quartz by technical alumina into the parent porcelain composition
has been studied during sintering at 1260 °C for 4 h. The profound
improvement of the morphological and electrical characteristics of
sintered electrical insulator bodies was evidenced with the optimal
insulator composition based on 20 mass-% substitution of quartz by
technical alumina corresponding to an Al2O3 : SiO2 mole ratio of 0,44.


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