About: Kinetics of Thermal-Decomposition of Hydroxyapatite Bioceramics

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The mechanism and kinetics of thermal decomposition of injection moulded hydroxyapatite ceramics were studied over the temperature range of 1473 to 1758 K. At temperatures below 1473 K the sintering and transformation of hydroxyapatite to hydroxyoxyapatite proceeded to a conversion degree of 0.4 to 0.5. At temperatures between 1473 K and 1758 K the hydroxyapatite was decomposed to TCP, H2O and CaO. The decomposition of HOA started on the surface of the HOA ceramics. The rate of increase in the thickness of the reaction products (TCP) was described by the parabolic law. The kinetic analysis of the time dependence of HOA conversion to TCP by means of the J-M-A-J-K equation also showed that the thermal decomposition of HOA ceramics was controlled by diffusion of water from the reaction zone to the surface of the ceramic sample. The activation energy of the thermal decomposition of HOA ceramics amounted to 283.5 kJ/mol. The mechanism and kinetics of thermal decomposition of injection moulded hydroxyapatite ceramics were studied over the temperature range of 1473 to 1758 K. At temperatures below 1473 K the sintering and transformation of hydroxyapatite to hydroxyoxyapatite proceeded to a conversion degree of 0.4 to 0.5. At temperatures between 1473 K and 1758 K the hydroxyapatite was decomposed to TCP, H2O and CaO. The decomposition of HOA started on the surface of the HOA ceramics. The rate of increase in the thickness of the reaction products (TCP) was described by the parabolic law. The kinetic analysis of the time dependence of HOA conversion to TCP by means of the J-M-A-J-K equation also showed that the thermal decomposition of HOA ceramics was controlled by diffusion of water from the reaction zone to the surface of the ceramic sample. The activation energy of the thermal decomposition of HOA ceramics amounted to 283.5 kJ/mol. (en)
Title	Kinetics of Thermal-Decomposition of Hydroxyapatite Bioceramics Kinetics of Thermal-Decomposition of Hydroxyapatite Bioceramics (en)
skos:prefLabel	Kinetics of Thermal-Decomposition of Hydroxyapatite Bioceramics Kinetics of Thermal-Decomposition of Hydroxyapatite Bioceramics (en)
skos:notation	RIV/00216305:26210/99:00000010!RIV/2000/MSM/262100
http://linked.open.../vavai/riv/strany	6121
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(FB-CV/64), P(OC 523.10), P(VS96121), Z(MSM 262100002)
http://linked.open...iv/cisloPeriodika	24
http://linked.open...vai/riv/dodaniDat	2000
http://linked.open...aciTvurceVysledku	Cihlář, Jaroslav Buchal, Antonín
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoké učení technické v Brně / Fakulta strojního inženýrství
http://linked.open...dnocenehoVysledku	743913
http://linked.open...ai/riv/idVysledku	RIV/00216305:26210/99:00000010
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	kinetics; thermal-decomposition; hydroxyapatite; bioceramics (en)
http://linked.open.../riv/klicoveSlovo	bioceramics hydroxyapatite kinetics thermal-decomposition
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[BB0509E9ADDF]
http://linked.open...i/riv/nazevZdroje	Journal of Material Science
http://linked.open...in/vavai/riv/obor	JH
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Research laboratory of Advanced Ceramic Materials Implants of the Human Skeletal System made of bioinert and bioactive materials of the new age. http://linked.opendata.cz/resource/domain/vavai/projekt/OC%20523.10
http://linked.open...UplatneniVysledku	1999
http://linked.open...v/svazekPeriodika	34
http://linked.open...iv/tvurceVysledku	Cihlář, Jaroslav Buchal, Antonín
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20262100002
issn	0022-2461
number of pages	11 (xsd:int)
http://localhost/t...ganizacniJednotka	26210

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