Optimized route for the production of zirconia structures with controlled surface porosity for biomedical applications

Stephanie Roedel, Júlio C.M. Souza, Filipe S. Silva, Joana Mesquita-Guimarães, Márcio C. Fredel, Bruno Henriques*

*Autor correspondente para este trabalho

Resultado de pesquisarevisão de pares

14 Citações (Scopus)

Resumo

Zirconia structures with controlled surface porosity may be used in several biomedical and engineering applications. This work aimed at developing a processing route for the production of zirconia structures with porous surfaces, using the dip coating method and without pore forming additives. Zirconia powders (~ 40 µm diameter) were used in the dip coating suspensions in three different forms: agglomerates (as received), pre-sintered (1150 °C, 1 h) and sintered (1500 °C, 2 h). The addition of fine particles (< 10 µm diameter) to the suspensions, in different contents, were tested to act as binder for the larger particles. Zirconia disk-shape compacts were dipped in the different suspensions and sintered. Pre-sintered powders were found to be the most adequate for producing the porous surface. The optimized binder content was determined as a function of the porous layer strength. A feasible route could be successfully established for the production of zirconia structures with porous surface.

Idioma originalEnglish
Páginas (de-até)12496-12503
Número de páginas8
RevistaCeramics International
Volume44
Número de emissão11
DOIs
Estado da publicaçãoPublicado - 1 ago. 2018
Publicado externamenteSim

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