Electrophoretic Deposition of Hydroxyapatite

The purpose of this study was to investigate the deposition of the hydroxyapatite(ha) coating via the electrophoresis procedure. the ha deposition was performedin an ethanol, methanol, acetone and isopropanol suspension. methanol was foundto be the best deposition media. among the different environmental conditions,including the encapsulation of the samples under two vacuum types of pressure(l 0-5-10-4 and 2x 10-2 torr) and also the purge of the argon gas in the tube-likefurnace, the optimum environment was the one demonstrating the encapsulation underthe vacuum pressure of 2x 10-2 torr (washing with argon gas of 99.9% purity). afterthe examination of 3 sintering temperatures (1020, 1050 and 1100 c), the sinteringtemperature at 1050 °c illustrated the most desired results. the samples sintered underthese conditions were apparently intact, most of the interfacial part of the coatingwas found to be attached to the substrate surfa ce irregularities and no single crackswere observed.