title: Effect of sintering on the microstructural and mechanical properties of meleagris gallopova hydroxyapatite.
abstract: In this study, we obtained hydroxyapatite powders from the femur bones of meleagris gallopova at three steps and sintered at five different temperatures. The reactions, which occur during sintering of obtained powders, have been characterized by X-ray diffraction (XRD) patterns, scanning electron microscope (SEM), differential thermal analysis (DTA), thermo-gravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR) techniques. The mechanical properties of meleagris gallopova hydroxyapatite powders were determined by the measurements of density, hardness, porosity, activation energy for grain growth, variation of average grain sizes, fracture toughness and compression strength. The Fourier transform infrared spectra and the thermogravimetric analysis/differential thermal analysis thermograms of meleagris gallopova hydroxyapatite powders indicated that the presence of organic compounds were completely removed from the matrice. The X-ray diffraction patterns showed that decomposition of meleagris gallopova hydroxyapatite into tricalcium phosphate and calcium oxide was observed for the sintered samples at 1300°C. At the same temperature, formation of microcracks were also detected by scanning electron microscopy image. Mechanical tests showed that maximum hardness, fracture toughness and compression strength values were measured for the sintered samples at 1200°C.
authors.affiliation: Metal Education Department, Technical Education Faculty, Marmara University, Istanbul, Turkey.
authors.forename: S Serdar
authors.initials: SS
authors.lastname: Pazarlioglu
authors.affiliation: Metallurgical and Materials Engineering Department, Istanbul Technical University, Istanbul, Turkey.
authors.forename: Hasan
authors.initials: H
authors.lastname: Gokce
authors.affiliation: Department of Dental Technology, School of Health Related Professions, Marmara University, Istanbul, Turkey.
authors.forename: Sevgi
authors.initials: S
authors.lastname: Ozyegin
authors.affiliation: Mechanical Engineering Department, Faculty of Engineering and Architecture, Mehmet Akif Ersoy University, Burdur, Turkey.
authors.forename: Serdar
authors.initials: S
authors.lastname: Salman
mesh_terms: D000818:Animals; D002130:Calcium Phosphates / Q000737:chemistry; D004055:Differential Thermal Analysis; D017886:Durapatite / Q000737:chemistry* / Q000302:isolation & purification; D005269:Femur / Q000737:chemistry*; D006244:Hardness; D008855:Microscopy, Electron, Scanning; D016062:Porosity; D033362:Powder Diffraction; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D013818:Thermogravimetry; D014422:Turkeys / Q000378:metabolism; D014961:X-Ray Diffraction
chemical_list: D002130:Calcium Phosphates; D017886:Durapatite; C018392:tricalcium phosphate
keywords: Meleagris gallopova; hydroxyapatite; sintering