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      Monoqueima de porcelanas esmaltadas em forno de micro-ondas Translated title: One-step microwave sintering of porcelains

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          Abstract

          A utilização da energia de micro-ondas no processamento de materiais cerâmicos apresenta vantagens quanto ao tempo de processo e homogeneidade microestrutural. Este trabalho tem como objetivo estudar a monoqueima de porcelanas de decoração esmaltada em um substrato de geometria complexa utilizando o aquecimento ultrarrápido híbrido por micro-ondas. As peças foram conformadas por colagem de barbotina e, ainda a verde, esmaltadas por imersão e queimadas pelo processo de monoqueima em forno convencional e em forno de micro-ondas. As peças queimadas por micro-ondas apresentaram características físicas, como aparência da superfície, adesão do esmalte, densidade aparente e resistência mecânica igual ou superior ao processo convencional de queima em apenas 24 min, equivalente a menos de 10% do tempo utilizado na sinterização convencional.

          Translated abstract

          The use of microwave energy in ceramic processing offers advantages such as shorter processing times and high structural homogeneity. The purpose of this work is to produce glazed porcelain samples by microwave hybrid sintering. Glazed porcelain samples with complex geometry were formed by slip casting, green glazed by immersion and subjected to one-step microwave and conventional sintering. The microwave sintered samples presented the same or superior physical characteristics of surface appearance, glass adhesion, apparent density and porosity, and modulus of rupture than the conventionally sintered samples in only 24 min of total sintering time, i.e., less than 10% of the conventional sintering time.

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          J. Am. Ceram. Soc.

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            Mesogenic molecular crystalline materials

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              Cerâmica Ind.

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                ce
                Cerâmica
                Cerâmica
                Associação Brasileira de Cerâmica (São Paulo )
                1678-4553
                December 2013
                : 59
                : 352
                : 545-550
                Affiliations
                [1 ] Universidade Federal de São Carlos Brazil
                Article
                S0366-69132013000400009
                10.1590/S0366-69132013000400009
                946c9d7e-bc20-462c-92e8-beb3788d1d9c

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0366-6913&lng=en
                Categories
                MATERIALS SCIENCE, CERAMICS

                Ceramics
                one-step sintering,porcelain,microwaves,porcelana,monoqueima,micro-ondas
                Ceramics
                one-step sintering, porcelain, microwaves, porcelana, monoqueima, micro-ondas

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