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Glass-reinforced hydroxyapatite composites: fracture toughness and hardness dependence on microstructural characteristics

Paper ID Volume ID Publish Year Pages File Format Full-Text
13963 982 1999 6 PDF Available
Title
Glass-reinforced hydroxyapatite composites: fracture toughness and hardness dependence on microstructural characteristics
Abstract

Fracture toughness and hardness properties of CaO–P2O5 glass-reinforced hydroxyapatite composites have been assessed using indentation techniques and results calculated according to Laugier and Evans’ equations. Both properties showed to be dependent upon several microstructural characteristics, namely residual porosity and the percentage of secondary β and α tricalcium phosphate phases in the structure of the composites. Composites presented a Palmqvist-type indentation crack system, which is the specific crack system addressed by Laugier's approach. Fracture toughness determinations according to Evan's equation, which is a universal one and adapted to both median and Palmqvist crack systems, did not correlate well with Laugier determinations.

Keywords
Hydroxyapatite–glass composites; Microstructure; Tricalcium phosphate; Fracture toughness; Hardness
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Glass-reinforced hydroxyapatite composites: fracture toughness and hardness dependence on microstructural characteristics
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 20, Issue 21, November 1999, Pages 2085–2090
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us