Stoichiometry and particle morphology effects on the aptitude to compaction of apatitic structure powders

Z. Hatim (1) , Abderrahim Michrafy (2) , M. Elassfouri (1) , F. Abida (1)

1 UCD - Université Chouaib Doukkali
2 RAPSODEE - Centre de recherche d'Albi en génie des procédés des solides divisés, de l'énergie et de l'environnement

Apatitic calcium phosphates powders with Ca/P molar ratio of 1.5 to 1.8 were synthesized at 25 degrees C using the neutralization method. These powders, differing by stoichiometry and particle morphology, were compacted in similar conditions. For a similar morphology of particles, compacts of the non-stoichiometric powders have better cohesion than those of the stoichiometric hydroxyapatite (Ca-10(PO4)(6)(OH)(2): Ca/P=11.67). The lacunar structure, with deficiency of calcium (Ca10-x (HPO4)(x)(PO4)(6-x)(OH)(2-x): 1.5

Mots clés: Hydroxyapatite powders; Die-compaction; Mechanical properties

Domaines: Sciences de l'ingénieur [physics]

Z. Hatim, Abderrahim Michrafy, M. Elassfouri, F. Abida. Stoichiometry and particle morphology effects on the aptitude to compaction of apatitic structure powders. Powder Technology, 2009, 190 (1-2, SI), pp.210-214. ⟨10.1016/j.powtec.2008.04.040⟩. ⟨hal-01718078⟩