SciELO - Scientific Electronic Library Online

 
vol.52 número322Processamento e avaliação das propriedades de tubos cerâmicos porosos para microfiltração de emulsõesAplicação de programa de análise de imagens na interpretação de fotomicrografias de alta resolução de argilominerais índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Cerâmica

versão impressa ISSN 0366-6913versão On-line ISSN 1678-4553

Resumo

CARLOS, M. O.; OLIVEIRA, I. R.; GARCIA, J. R.  e  PANDOLFELLI, V. C.. Suspension optimization in order to obtain porous ceramics through "gelcasting". Cerâmica [online]. 2006, vol.52, n.322, pp.172-178. ISSN 0366-6913.  http://dx.doi.org/10.1590/S0366-69132006000200009.

Processes involving high temperatures consume great amounts of energy, influencing the final cost of the products. Therefore, there is a clear market need for the development of refractory ceramics with insulating properties for high temperatures application. These materials should present small pores, low permeability, suitable mechanical resistance and low volumetric shrinkage. In this work, the influence of the suspensions in the properties of porous ceramic, obtained by foam incorporation into the ceramic suspension, was evaluated through porosity, linear shrinkage and mechanical strength measurements. The results showed that the appropriate choice of raw materials, as well as solids content of the suspension, resulted in larger porosity. Such aspects should provide porous ceramic with higher mechanical strength due to their superior strut density.

Palavras-chave : porous ceramic; insulating for high temperatures; gelcasting.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons