n d not determined sup 1 ducheyne p van raemdonck w heughebaert j c heughebaert m 34 structural analysis of hydroxyapatite coatings on titanium 34 biomaterials 7 97 103 1986 sup 2 bonel g heughebaert j c heughebaert m lacout jl lebugle a 34 apatitic calcium orthophosphates and related compounds for biomaterials preparation 34 in bioceramics 34 material characteristics vs in vivo behavior 34 ed p ducheyne j lemons ann n y ac sci 523 1988 table 2______________________________________electrophoretic deposition results for variouscpc powders deposited at 100 v cm for 60 sec water current coating content density weightpowder by weight ma cm sup 2 mg cm sup 2 ______________________________________ha1 nc 4 8 15 30 10 u00b1 2hap 1 nc 9 9 gt 1000 0hap 1 c 0 lt 20 10ap tcp nc 11 19 21 0 u03b2 tcp c 0 lt 15 15______________________________________ notes nc noncalcined c calcined the current density decreases during deposition therefore only a rang is indicated table 3______________________________________characteristics of the treated cpc powders and coatings basepowder treatment structural characteristics______________________________________hap 1 ar precip poorly crystalized and hydroxyapatite single lyophilized phase material hap 1 ar c pure hydroxyapatite single phase material ar c vt sub 8 oxyhydroxyapatite single phase material ar c vt sub 24 oxyhydroxyapatite single phase material ar c ed vs oxyhydroxyapatite tetracalciumphosphateha1 ar c hydroxyapatite ha u03b2 tricalcium phosphate u03b2 tcp two phase material oxyhydroxyapatite tetracalciumphosphate u03b1.