Microporous Ti Implant Compact Coated with Hydroxyapatite Produced by Electro-Discharge-Sintering and Electrostatic-Spray-Deposition

• DOI: 10.1166/jnn.2014.9933
• Publication Date: 2014-08-29T00:05:24Z
• Authors: Y. J. Jo; Y. H. Kim; Y. H. Jo; J. G. Seong; S. Y. Chang; C. J. Van Tyne; W. H. Lee
• Keywords: Equiaxed crystals; Deposition

A single pulse of 1.5 kJ/0.7 g atomized spherical Ti powder from 300 μF capacitor was applied to produce the porous-surfaced implant compact by electro-discharge-sintering (EDS). solid core surrounded porous layer self-consolidated a discharge in middle 122 μsec. Average pore size, porosity, and compressive yield strength EDS were estimated be about 68.2 μm, 25.5%, 266.4 MPa, respectively. Coatings with hydroxyapatite (HAp) on conducted electrostatic-spray-deposition (ESD) method. As-deposited HAp coating form structure consisted particles which uniformly distributed structure. By heat-treatment at 700 degrees C, agglomerated each other melted highly smooth homogeneous thin film equiaxed nano-scaled grains. Porous-surfaced compacts coated crystalline apatite phase successfully obtained using ESD techniques.