Prepartion of NanoHydoxyapatite-Carbon Nanotube Nanocomposite Coatings by Electrophoretic Deposition on 316L Stainless Steel

Nanohydroxyapatite-carbon nanotube nanocomposite coatings were deposited via electrophoretic deposition (epd). aisi 316l stainless steel and ethanol were used as substrate and dispersing medium, respectively. 5%wt carbon nanotube (cnt) was used as reinforcing phase. uniform and crack-free coatings were obtained both for ha and ha-5%wt cnt coatings. scanning electron microscopy (sem) revealed that most of microcracks in ha coating has eliminated after introducing cnt as reinforcing phase. the variation of deposit weight by time and voltage is measured both for ha and ha-5%wt cnt coatings. thickness measurements revealed that for both coatings, the thickness increases with deposition voltage. x-ray diffraction patterns indicated that ha has not decomposed after sintering at 850 °c for 2 hr in argon atmosphere