ERA

Download the full-sized PDF of Effect of crystallinity on crack propagation and mineralization of bioactive glass 45S5Download the full-sized PDF

Analytics

Share

Permanent link (DOI): https://doi.org/10.7939/R3WP63

Download

Export to: EndNote  |  Zotero  |  Mendeley

Communities

This file is in the following communities:

Graduate Studies and Research, Faculty of

Collections

This file is in the following collections:

Theses and Dissertations

Effect of crystallinity on crack propagation and mineralization of bioactive glass 45S5 Open Access

Descriptions

Other title
Subject/Keyword
crack propagation
bioactive glass ceramic
crystallization
mineralization
Avrami kinetics
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Kashyap, Satadru
Supervisor and department
Nychka, John A. (Chemical and Materials Engineering)
Examining committee member and department
Luth, Robert (Earth and Atmospheric Sciences)
Nychka, John A. (Chemical and Materials Engineering)
Gerlich, Adrian (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization

Date accepted
2010-08-30T16:16:43Z
Graduation date
2010-11
Degree
Master of Science
Degree level
Master's
Abstract
Bioactive glasses are a type of ceramic material designed to be used as bioresorbable therapeutic bone implants. Thermal treatment of bioactive glass ceramics dictates many important features such as microstructure, degree of crystallinity, mechanical properties, and mineralization. This study investigates the effects of temperature, time, and heating rates on the crystallization kinetics of melt cast bioactive glass 45S5. Bulk crystallization (three dimensional crystallite formation) was found to always occur in bulk bioactive glass 45S5 irrespective of the processing conditions. A comparative study of crack paths in amorphous and crystalline phases of bioactive glass 45S5 revealed crack deflections and higher fracture resistance in partially crystallized bioactive glass. Such toughening is likely attributed to different crystallographic orientations of crystals or residual thermal mismatch strains. Furthermore, in vitro immersion testing of partially crystalline glass ceramic revealed higher adhesion capabilities of the mineralized layer formed on amorphous regions as compared to its crystalline counterpart.
Language
English
DOI
doi:10.7939/R3WP63
Rights
License granted by Satadru Kashyap (satadru@ualberta.ca) on 2010-08-26T15:41:36Z (GMT): Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
Citation for previous publication

File Details

Date Uploaded
Date Modified
2014-05-02T17:39:59.167+00:00
Audit Status
Audits have not yet been run on this file.
Characterization
File format: pdf (Portable Document Format)
Mime type: application/pdf
File size: 9909417
Last modified: 2015:10:12 20:32:16-06:00
Filename: Kashyap_Satadru_Fall 2010.pdf
Original checksum: 500e3354765fd0f15187324a3f6b910e
Well formed: true
Valid: false
Status message: Invalid destination object offset=9658628
File title: Chapter 1
File author: Hamidreza
Page count: 141
Activity of users you follow
User Activity Date