Sintering effects on the strength of hydroxyapatite

Ruys, AJ; Wei, M; Sorrell, CC; Dickson, MR; Brandwood, A; Milthorpe, BK

Sintering effects on the strength of hydroxyapatite

Ruys, AJ Wei, M Sorrell, CC Dickson, MR Brandwood, A Milthorpe, BK

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Publication Type:: Journal Article
Citation:: Biomaterials, 1995, 16 (5), pp. 409 - 415
Issue Date:: 1995-01-01

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Field	Value	Language
dc.contributor.author	Ruys, AJ	en_US
dc.contributor.author	Wei, M	en_US
dc.contributor.author	Sorrell, CC	en_US
dc.contributor.author	Dickson, MR	en_US
dc.contributor.author	Brandwood, A	en_US
dc.contributor.author	Milthorpe, BK https://orcid.org/0000-0002-0867-9586	en_US
dc.date.issued	1995-01-01	en_US
dc.identifier.citation	Biomaterials, 1995, 16 (5), pp. 409 - 415	en_US
dc.identifier.issn	0142-9612	en_US
dc.identifier.uri	http://hdl.handle.net/10453/9641
dc.description.abstract	Mechanisms underlying temperature-strength interrelations for dense (> 95% dense, pores closed) hydroxyapatite (HAp) were investigated by comparative assessment of temperature effects on tensile strength, Weibull modulus, apparent density, decomposition (HAp:tricalcium phosphate ratio), dehydroxylation and microstructure. Significant dehydroxylation occurred above ~800 °C. Strength peaked at ~80 MPa just before the attainment of closed porosity (~95% dense). For higher temperatures (closed porosity), the strength dropped sharply to ~60 MPa due to the closure of dehydroxylation pathways, and then stabilized at ~60 MPa. At very high temperatures (> 1350 °C), the strength dropped catastrophically to ~10 MPa corresponding to the decomposition of HAp to tricalcium phosphate and the associated sudden release of the remaining bonded water. © 1995.	en_US
dc.relation.ispartof	Biomaterials	en_US
dc.relation.isbasedon	10.1016/0142-9612(95)98859-C	en_US
dc.subject.classification	Biomedical Engineering	en_US
dc.subject.mesh	Durapatite	en_US
dc.subject.mesh	Heating	en_US
dc.subject.mesh	Hydroxylation	en_US
dc.subject.mesh	Chemistry, Physical	en_US
dc.subject.mesh	Tensile Strength	en_US
dc.title	Sintering effects on the strength of hydroxyapatite	en_US
dc.type	Journal Article
utslib.citation.volume	5	en_US
utslib.citation.volume	16	en_US
utslib.for	090302 Biomechanical Engineering	en_US
utslib.for	090301 Biomaterials	en_US
utslib.for	110304 Dermatology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - CHT - Health Technologies
utslib.copyright.status	closed_access
pubs.issue	5	en_US
pubs.publication-status	Published	en_US
pubs.volume	16	en_US

Abstract:

Mechanisms underlying temperature-strength interrelations for dense (> 95% dense, pores closed) hydroxyapatite (HAp) were investigated by comparative assessment of temperature effects on tensile strength, Weibull modulus, apparent density, decomposition (HAp:tricalcium phosphate ratio), dehydroxylation and microstructure. Significant dehydroxylation occurred above ~800 °C. Strength peaked at ~80 MPa just before the attainment of closed porosity (~95% dense). For higher temperatures (closed porosity), the strength dropped sharply to ~60 MPa due to the closure of dehydroxylation pathways, and then stabilized at ~60 MPa. At very high temperatures (> 1350 °C), the strength dropped catastrophically to ~10 MPa corresponding to the decomposition of HAp to tricalcium phosphate and the associated sudden release of the remaining bonded water. © 1995.

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http://hdl.handle.net/10453/9641