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An X-ray diffraction study of the effects of heat treatment on bone mineral microstructure

Paper ID Volume ID Publish Year Pages File Format Full-Text
13451 856 2002 9 PDF Available
Title
An X-ray diffraction study of the effects of heat treatment on bone mineral microstructure
Abstract

A series of human cortical bone specimens has been heated to temperatures up to 1200°C and the mineral content examined in detail by X-ray diffraction. Line profile analysis of the diffraction data has been undertaken to characterise the microstructural (crystallite size and microstrain) features of the mineral at each temperature. Individual profile fitting of several maxima from each diffractogram has also provided precise lattice parameters of the apatite at each temperature.The apatite did not show any significant decomposition over the temperature range although CaO was increasingly formed at temperatures above 600°C. Both finite crystallite size and microstrain contributed significantly to the diffraction peak broadening below 600°C. When heated to >800°C, the small, rod-like mineral crystallites changed from a highly anisotropically strained state to one with significantly larger equidimensional crystals possessing little microstrain.The findings are discussed in the context of graft bone substitutes and surgical heating of bone.

Keywords
Bone mineral; X-ray diffraction; Microstructure; Thermal effects
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An X-ray diffraction study of the effects of heat treatment on bone mineral microstructure
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 23, Issue 12, June 2002, Pages 2577–2585
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
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Price was $35.95
You save - $31
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