Micrograded ceramic-metal composites
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2019
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Journal of the European Ceramic Society
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The article shows new designed cermets and processes concerning primary to applications as thermal insulation
materials with low emissivity. A new projected microstructure was obtained where dense regions (micropellets)
rest inside the main porous pellet. The feature resembles a frozen hypercube, therefore such architecture is called
hyper-pellet/ cermet. The processing method to obtain the hyper-cermet is based on sequential tape castings and
sintering techniques. Ni-zirconia lamellae were prepared by a special mechanochemical process followed by
sintering, which remain inside the main pellets as a dense region. The whole pellet is turned to be porous by
employing pore-forming additives. All the constituents and porosity shapes are aligned along the disc/ flake
planes. Thermal conductivity is estimated for the materials up to 800 °C by a flash diffusivimeter. Ceramographic
analyses show graded density regions with directional constituents and pores. Applications of such materials are
foreseen as temperature insulation materials and thermal radiation shields.
Como referenciar
RESTIVO, THOMAZ A.G.; BECCARI, RAFAEL F.; PADILHA, WELLINGTON R.; DURAZZO, MICHELANGELO; TELLES, VICTOR B.; COLETI, JORGE; YAMAGATA, CHIEKO; SILVA, ANTONIO C. da; SUZUKI, EDUARDO; TENORIO, JORGE A.S.; MELLO-CASTANHO, SONIA R.H. Micrograded ceramic-metal composites. Journal of the European Ceramic Society, v. 39, n. 12, p. 3484-3490, 2019. DOI: 10.1016/j.jeurceramsoc.2019.03.018. Disponível em: http://repositorio.ipen.br/handle/123456789/30001. Acesso em: 26 Mar 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.