X-ray diffraction data for flux-grown calcium hydroxyapatite whiskers

2001-06-01
Tas, AC
Calcium hydroxyapatite (Ca-l10(PO4)(6)(OH)(2)) whiskers were prepared by using the technique of molten salt synthesis with the fluxing agent of potassium sulphate (K2SO4). A tentative x-ray diffraction (XRD) pattern was suggested for the produced whiskers. Phase purity, composition, and morphology of the whiskers were investigated by powder XRD, inductively coupled plasma-atomic emission spectroscopy, Fourier transform infrared spectroscopy, and scanning electron microscopy, respectively. (C) 2001 international Centre for Diffraction Data.
POWDER DIFFRACTION

Suggestions

Molten salt synthesis of calcium hydroxyapatite whiskers
Tas, AC (2001-02-01)
Calcium hydroxyapatite (HA) whiskers and crystals were produced by the route of molten salt synthesis. The effects on whisker morphology of chosen flux, flux-to-HA ratio, synthesis temperature, and reaction time were investigated. The thermal stabilities of the produced whiskers were tested at 1300 degreesC in an air atmosphere. A tentative X-ray diffraction pattern was proposed for the HA whiskers, Molten salt synthesis with a K2SO4 flux was found to be a simple and sturdy technique for manufacturing short...
Synergistic fire retardancy of colemanite, a natural hydrated calcium borate, in high-impact polystyrene containing brominated epoxy and antimony oxide
Kaynak, Cevdet (2011-05-01)
This study explores for the first time the synergistic fire retardant action of natural hydrated calcium borate, namely the mineral colemanite, which partially replaces antimony oxide in brominated flame retardant high-impact polystyrene compounds. Various antimony oxide to hydrated calcium borate ratios were employed keeping the brominated flame retardant additive at a constant loading level. With partial colemanite substitution for antimony oxide, lower heat release rate, total heat evolved and fire growt...
Clean and efficient microwave-solvent-free conversion of homochiral amines, alpha-amino alcohols and alpha-amino acids to their chiral 2-substituted pyrrole derivatives
Aydogan, F; Demir, Ayhan Sıtkı (Elsevier BV, 2005-03-21)
Efficient synthesis of 1,2-disubstituted homochiral pyrroles has been achieved by a two-component coupling of chloroenones and amine compounds on the surface of silica gel without any solvent under microwave irradiation.
Electrochemical decomposition of SiO2 pellets to form silicon in molten salts
Ergul, Emre; Karakaya, İshak; Erdogan, Metehan (Elsevier BV, 2011-01-21)
Direct electrochemical reduction of porous SiO2 pellets in molten CaCl2 salt and CaCl2-NaCl salt mixture was investigated by applying 2.8 V potential. The study focused on the effects of temperature, particle size of SiO2 powder starting material and the behavior of cathode contacting materials during electrochemical reduction process. The starting materials and the electrolysis products were characterized by X-ray diffraction analysis and scanning electron microscopy mainly. The studies showed that smaller...
An investigation of the chemical synthesis and high-temperature sintering behaviour of calcium hydroxyapatite (HA) and tricalcium phosphate (TCP) bioceramics
Tas, AC; Korkusuz, Feza; Timucin, M; Akkas, N (1997-02-01)
The experimental conditions for the synthesis of sub-micrometre, spherical particles of calcium hydroxyapatite [Ca,,(PO,),(OH),] (HA) and tricalcium phosphate [Ca,(PO,),] (TCP) are investigated through chemical coprecipitation from the aqueous solutions of calcium nitrate and di-ammonium hydrogen phosphate salts. The precipitation process employed was also found to be suitable for the production of sub-micrometre HA/TCP composite powders in situ. The synthesized pure HA and TCP powders were found to be stab...
Citation Formats
A. Tas, “X-ray diffraction data for flux-grown calcium hydroxyapatite whiskers,” POWDER DIFFRACTION, pp. 102–106, 2001, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/63728.