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Preparation of calcium manganese phosphate by mechanochemical synthesis of manganese and hydroxyapatite

Preparation of calcium manganese phosphate by mechanochemical synthesis of manganese and... Biocompatible hydroxyapatite (HA), with chemical formula Ca5(PO4)3(OH), is widely used in dentistry and orthopedics. Inorganic additions of metal ions into HA structure can significantly influence physicochemical properties of HA-based ceramics. Calcium manganese phosphate (Ca19Mn2(PO4)14) was successfully synthesized by mechanochemical method where the manganese was added to HA with 5, 10, 15, and 20 wt%. The mechanochemical process was investigated by using Fourier-transform infrared spectrometer (FT-IR), X-ray diffraction (XRD), and differential thermal analysis (DTA). The compacted circular disc samples heat-treated at 1200 °C were also investigated using field emission scanning electron microscopy (FE-SEM) where fine agglomerates with small grain size were found. Sample densification improved with increasing sintering temperature. Calcium manganese phosphate (Ca19Mn2(PO4)14), beta-tricalcium phosphate (β-Ca3(PO4)2), and manganese oxide (Mn2O3) phases were formed and increases with increasing sintering temperature. The electrochemical behaviors and corrosion rate were investigated by potentiodynamic polarization, which confirms low corrosion rate that calculated by weight loss test of HA/Mn sample in Hank’s solution. With increasing Mn content, Vicker’s hardness and contact angle of the 1200-°C sintered materials decrease. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Australian Ceramic Society Springer Journals

Preparation of calcium manganese phosphate by mechanochemical synthesis of manganese and hydroxyapatite

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References (45)

Publisher
Springer Journals
Copyright
Copyright © 2019 by Australian Ceramic Society
Subject
Materials Science; Ceramics, Glass, Composites, Natural Materials; Materials Engineering; Inorganic Chemistry
ISSN
2510-1560
eISSN
2510-1579
DOI
10.1007/s41779-018-00293-4
Publisher site
See Article on Publisher Site

Abstract

Biocompatible hydroxyapatite (HA), with chemical formula Ca5(PO4)3(OH), is widely used in dentistry and orthopedics. Inorganic additions of metal ions into HA structure can significantly influence physicochemical properties of HA-based ceramics. Calcium manganese phosphate (Ca19Mn2(PO4)14) was successfully synthesized by mechanochemical method where the manganese was added to HA with 5, 10, 15, and 20 wt%. The mechanochemical process was investigated by using Fourier-transform infrared spectrometer (FT-IR), X-ray diffraction (XRD), and differential thermal analysis (DTA). The compacted circular disc samples heat-treated at 1200 °C were also investigated using field emission scanning electron microscopy (FE-SEM) where fine agglomerates with small grain size were found. Sample densification improved with increasing sintering temperature. Calcium manganese phosphate (Ca19Mn2(PO4)14), beta-tricalcium phosphate (β-Ca3(PO4)2), and manganese oxide (Mn2O3) phases were formed and increases with increasing sintering temperature. The electrochemical behaviors and corrosion rate were investigated by potentiodynamic polarization, which confirms low corrosion rate that calculated by weight loss test of HA/Mn sample in Hank’s solution. With increasing Mn content, Vicker’s hardness and contact angle of the 1200-°C sintered materials decrease.

Journal

Journal of the Australian Ceramic SocietySpringer Journals

Published: Jan 3, 2019

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