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*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)12496-12503
Number of pages8
JournalCeramics International
Volume44
Issue number11
DOIs
Publication statusPublished - 1 Aug 2018
Externally publishedYes

Keywords

  • 3Y-TZP
  • Dip coating
  • Porous surface
  • Zirconia

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