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Paper Information

Title: 

EFFECT OF HEAT TREATMENT ON MORPHOLOGY AND SUBSTRUCTURE OF FLUOR HYDROXYAPATITE SOL-GEL COATINGS ON TITANIUM SUBSTRATES

Type: PAPER
Author(s): JOUGHEHDOUST S.*,BEHNAMGHADER A.,AFSHAR A.
 
 *BIOMEDICAL ENGINEERING FACULTY OF ISLAMIC AZAD UNIVERSITY, SCIENCE AND RESEARCH BRANCH CENTER, TEHRAN, IRAN
 
Name of Seminar: IRANIAN CONFERENCE ON BIOMEDICAL ENGINEERING
Type of Seminar:  CONFERENCE
Sponsor:  ANJOMANE MOHANDESI PEZESHKI IRAN
Date:  2008Volume 14
 
 
Abstract: 

IN THIS INVESTIGATION, FLOUR-HYDROXYAPATITE (FHA) FILM WAS DEPOSITED ON A TITANIUM SUBSTRATE BY SOL-GEL METHOD. TRIETHYL PHOSPHITE, AMMONIUM FLUORIDE AND CALCIUM NITRATE IN ETHANOL SOLUTIONS WERE USED RESPECTIVELY AS P, F AND CA PRECURSORS. TYPICAL APATITE STRUCTURES WERE OBTAINED FOR ALL COATINGS AFTER DIPPING AND SUBSEQUENT HEAT TREATMENT AT 550, 700 AND 800OC.
THE COATING LAYERS WERE INVESTIGATED WITH SEM, XRD AND FT-IR SPECTROSCOPY. THE XRD RESULTS SHOWED THAT THE COATINGS HEAT TREATED AT 550ºC WERE ONLY COMPOSED OF HA AND FA BUT THE RUTILE (TIO2) PHASE WAS ALSO IDENTIFIED IN THE COATINGS HEAT TREATED AT HIGHER TEMPERATURES. IN ADDITION, THE FORMATION OF FLOUR-HYDROXYAPATITE WAS CONFIRMED BY FT-IR RESULTS. DESPITE OF THE SIMILAR GRANULAR MICROSTRUCTURE OF APATITE IN THE SAMPLES HEAT TREATED AT 550 AND 700OC, THE CRYSTALLINE GRAINS OF RUTILE WERE CLEARLY VISIBLE IN THE SAMPLES HEAT TREATED AT 800OC.

 
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