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Journal Articles Open Ceramics Year : 2022

A parametric study of conventional and high-speed microwave sintering of robocast porcelain

Abstract

The combination of three-dimensional (3D) printing technologies and microwave (MW) sintering offers new perspectives for minimizing material, energy and time waste. This study aimed at conducting a parametric study on the sintering of robocast porcelain by conventional and MW heating in a multimode cavity (2.45 GHz, 3 kW). The effect of heating rate, dwell temperature and dwell duration on sample density, shrinkage and microstructure was investigated on small pellets. With conventional heating, a good densification was achieved with a 2 h dwell at 1250 °C, independent of heating rate (1–20 °C/min). A similar density was reached using microwave hybrid heating at a much higher heating rate (100 °C/min), shorter dwell (30 min) and slightly higher sintering temperature (1300 °C). Without susceptor, a longer pre-heating step was required to initiate the sample heating, thus extending the heat treatment duration. This study provides seeding data for the development of greener processes for aluminosilicate ceramic manufacturing.
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emse-04489911 , version 1 (05-03-2024)

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Attribution - NonCommercial - NoDerivatives

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Marianna Peroglio, Christophe Meunier, Julien Favre, Jenny Faucheu, Clémence Petit. A parametric study of conventional and high-speed microwave sintering of robocast porcelain. Open Ceramics, 2022, 9, pp.100246. ⟨10.1016/j.oceram.2022.100246⟩. ⟨emse-04489911⟩
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