Thermal analysis on dehydroxylation of sol-gel derived zinc doped calcium phosphate powders

Sopyan, Iis and Gunawan, Syauqi (2015) Thermal analysis on dehydroxylation of sol-gel derived zinc doped calcium phosphate powders. Advanced Materials Research, 1115. pp. 353-356. ISSN 1662-8985

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Abstract

The dehydroxylation of Zn free and 4 mol% Zn CaP powder was investigated using thermogravimetric analysis over the range of room temperature to 1200 °C. The kinetic result of dehydroxylation of Zn free and 4 mol% Zn CaP was calculated by means of the Ozawa–Flynn–Wall method. The XRD result indicated that the amount of Zn incorporated in HA lattice influences the phase stability of HA as it decreases with an increase in Zn concentration. According to calculated activation energy and conversion degree, the kinetics of HA dehydroxylation was identified, which included four successive conversion stages kinetically controlled by different rate-controlling processes. The dehydroxylation analysis of TG/DTG data show that Zn incorporation in HA lattice influences the phase stability of HA.

Item Type:	Article (Journal)
Additional Information:	4809/46929
Uncontrolled Keywords:	Calcium Phosphate, Dehydroxylation, Sol-Gel Method, Thermogravimetric, Zinc Doped
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	PROF. DR. IIS SOPYAN
Date Deposited:	28 Mar 2018 15:34
Last Modified:	25 Jun 2018 08:10
URI:	http://irep.iium.edu.my/id/eprint/46929

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