Rheological characteristics of slurry controlling the microstructure and the compressive strength behavior of biomimetic hydroxyapatite

S. Guicciardi, C. Galassi, E. Landi, A. Tampieri, K. Satou, G. Pezzotti

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

The sponge impregnation of water-based suspensions of hydroxyapatite powders synthesized by the coprecipitation method was investigated. The powder characteristics and slurry properties were correlated with the porosity and mechanical properties of the porous bodies obtained. The theological characterization in the continuous flow condition revealed a strong dependence of the rheological behavior on the solid loadings particularly with high specific surface area powder. The behavior changed from newtonian to plastic, with pronounced hysteresis effects due to time dependency, by increasing the solids loading from 10 to 18 vol%. The morphology and distribution of the macropores could be related to the starting powder crystallinity and morphology as well as to the rheological properties of the suspensions. The compressive strength of the materials was strongly influenced by the porosity, while there was almost no dependence on the crystallinity of the powder. From a statistical viewpoint, the microporosity better explained the behavior of the mechanical strength than the total porosity.

Original languageEnglish (US)
Pages (from-to)163-170
Number of pages8
JournalJournal of Materials Research
Volume16
Issue number1
DOIs
StatePublished - Jan 2001

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Rheological characteristics of slurry controlling the microstructure and the compressive strength behavior of biomimetic hydroxyapatite'. Together they form a unique fingerprint.

Cite this