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Ceramica  2012 

Efeito das propriedades dos esmaltes e engobes sobre a curvatura de revestimentos ceramicos

DOI: 10.1590/S0366-69132012000100019

Keywords: curvature, engobe, glaze, ceramic tiles.

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the interaction between support-glaze and support-engobe were studied separately regarding the central curvature of ceramic tiles. were formulated two glazes samples and four engobes samples, these were applied on a particular type of ceramic support with classification in the group b-iib, by norma abnt nbr 13.818/1997 - iso 13006. some characteristics were measured as "thermal expansion coefficient" and "shrinkage difference between support-engobe". a method was suggested d for evaluation of interaction between support-engobes and support-glazes. the results showed that, for interaction support-glazes the superposition of dilatometric curves method is well implemented; for interaction support-engobe, a statistical test was conducted with factorial design 22, indicating that the variable "shrinkage difference between support-engobe" is the variable significant to describe the central curvature of ceramic tiles.


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