Preparation of Porous Hydroxyapatite Tablets and Porous Hydroxyapatite Coatings for Orthopaedic Use

摘要

Porous hydroxyapatite tablets and porous hydroxyapatite coatings on metal substrates were obtained by the addition of polymeric additives and lifilization. Hydroxyapatite coatings on either stainless steel or titanium were obtained by both plasma spraying and laser ablation. Both tablets and coatings were characterised by scanning electron microscopy and X-ray diffraction. Tablets obtained with either PVA or CMC as a polymeric additive and thermally treated at 400 deg.C exhibited an interconnected porous structure of approximately 40 μ