Evaluation of Argon-Gas-Injected Solvothermal Synthesis of Hydroxyapatite Crystals Followed by High-Frequency Induction Heat Sintering

• DOI: 10.1021/acs.cgd.0c00048
• Publication Date: 2020-04-15T16:53:35Z
• Authors: Hassan Nosrati; Rasoul Sarraf-Mam...; Dang Quang Svend Le; Maria Canillas Perez; Cody Eric Bünger
• Keywords: Diethylene glycol

In this study, the two-state solvothermal method (180 °C) was used for synthesis of hydroxyapatite nanoparticles. The former is traditional (2, 4 h), and latter, with argon gas injection (10 bar). To synthesize powders, a solvent containing dimethylformamide, anhydrous ethanol, diethylene glycol, water used. Calcium nitrate tetrahydrate diammonium hydrogen phosphate were as calcium precursors, respectively. synthesized powders consolidated by high-frequency induction heat sintering method. sintered samples then evaluated using X-ray diffraction, Raman spectroscopy, high-resolution transmission electron microscopy, Vickers microindentation technique. results study showed that in way are nanometer-sized. increased crystallinity, crystallite size, particles size. addition, powder phase changed mechanical properties samples. increase pressure hardness elastic modulus. Also, achieved high relative density.