Influence of the sintering temperature on Young's modulus and the shear modulus of tricalcium phosphate – fluorapatite composites evaluated by ultrasound techniques

Autor:	Jamel Bouaziz, Foued Ben Ayed, Nadhem Bouslama, Yvon Chevalier
Rok vydání:	2013
Předmět:	Materials science Fluorapatite Modulus chemistry.chemical_element Sintering Young's modulus Calcium Condensed Matter Physics Ultrasound techniques Shear modulus symbols.namesake chemistry symbols General Materials Science Composite material Porosity
Zdroj:	Materials Chemistry and Physics. 141:289-297
ISSN:	0254-0584
DOI:	10.1016/j.matchemphys.2013.05.013
Popis:	The mechanical properties of the tricalcium phosphate sintered between 1100 °C and 1450 °C for 1 h with different percentages of fluorapatite (13.26 wt%; 19.9 wt%; 26.52 wt%; 33.16 wt% and 40 wt%) have been characterized and evaluated using the ultrasound techniques. Young's modulus and the shear modulus were calculated from the point of the longitudinal and the transversal ultrasonic velocities. Young's modulus and the shear modulus of tricalcium phosphate increased with the sintering temperature and with the addition of the fluorapatite additive into the tricalcium phosphate matrix. At 1300 °C, the shear modulus and Young's modulus of the tricalcium phosphate – 40 wt% fluorapatite composites registered optimum values: 26 GPa and 66.2 GPa, respectively. Above 1300 °C, the mechanical properties of the tricalcium phosphate – fluorapatite composites were hindered by the tricalcium phosphate allotropic transformation and the formation of both the intragranular porosity and the cracks.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::862a768fb9f7d8f7b54570897d991ba8 https://doi.org/10.1016/j.matchemphys.2013.05.013 Zobrazit plný text záznamu Full Text from ScienceDirect