$Dependence of the fracture toughness on the sintering time of dense hydroxyapatite bioceramics$

Dependence of the fracture toughness on the sintering time of dense hydroxyapatite bioceramics

Fracture toughness dependence of sintered hydroxyapatite (HA) bioceramics on the sintering time was studied. The nanocrystalline and highly pure Hydroxyapatite powders produced by wet chemical precipitation method were used as starting material. After uniaxial and cold isostatic pressing, the green...

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Main Authors:	Tolouei, Ranna, Singh, Ramesh, Sopyan, Iis, Yong, Tan Chou, Amiriyan, Mahdi, Dung, Teng Wan
Format:	Article
Language:	English
Published:	Trans Tech Publications 2011
Subjects:	TA401 Materials of engineering and construction
Online Access:	http://irep.iium.edu.my/4606/ http://irep.iium.edu.my/4606/ http://irep.iium.edu.my/4606/ http://irep.iium.edu.my/4606/1/MSF_694_391.gif

id	iium-4606
recordtype	eprints
spelling	iium-46062013-06-27T02:51:20Z http://irep.iium.edu.my/4606/ Dependence of the fracture toughness on the sintering time of dense hydroxyapatite bioceramics Tolouei, Ranna Singh, Ramesh Sopyan, Iis Yong, Tan Chou Amiriyan, Mahdi Dung, Teng Wan TA401 Materials of engineering and construction Fracture toughness dependence of sintered hydroxyapatite (HA) bioceramics on the sintering time was studied. The nanocrystalline and highly pure Hydroxyapatite powders produced by wet chemical precipitation method were used as starting material. After uniaxial and cold isostatic pressing, the green HA samples sintered at temperatures ranging from 1000 °C to 1300 °C with different sintering time. Dense compacts with grain sizes in the nanometer to micrometer range were processed. The average grain size of HA compact sintered at 1000 °C was around 500 nm. Grain size increased to 3 μm when the compacts were sintered at higher temperature. The average microhardness value of sintered HA decreased with an increased in grain size. Indentation fracture toughness for HA compacts of 700 nm grain size was 1.41±0.4 MPa.m1/2 which is similar to fracture toughness of human cortical bone. Trans Tech Publications 2011-07-27 Article PeerReviewed application/pdf en http://irep.iium.edu.my/4606/1/MSF_694_391.gif Tolouei, Ranna and Singh, Ramesh and Sopyan, Iis and Yong, Tan Chou and Amiriyan, Mahdi and Dung, Teng Wan (2011) Dependence of the fracture toughness on the sintering time of dense hydroxyapatite bioceramics. Materials Science Forum, 694. pp. 391-395. ISSN 0255-5476 http://www.scientific.net/MSF.694.391 10.4028/www.scientific.net/MSF.694.391
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TA401 Materials of engineering and construction
spellingShingle	TA401 Materials of engineering and construction Tolouei, Ranna Singh, Ramesh Sopyan, Iis Yong, Tan Chou Amiriyan, Mahdi Dung, Teng Wan Dependence of the fracture toughness on the sintering time of dense hydroxyapatite bioceramics
description	Fracture toughness dependence of sintered hydroxyapatite (HA) bioceramics on the sintering time was studied. The nanocrystalline and highly pure Hydroxyapatite powders produced by wet chemical precipitation method were used as starting material. After uniaxial and cold isostatic pressing, the green HA samples sintered at temperatures ranging from 1000 °C to 1300 °C with different sintering time. Dense compacts with grain sizes in the nanometer to micrometer range were processed. The average grain size of HA compact sintered at 1000 °C was around 500 nm. Grain size increased to 3 μm when the compacts were sintered at higher temperature. The average microhardness value of sintered HA decreased with an increased in grain size. Indentation fracture toughness for HA compacts of 700 nm grain size was 1.41±0.4 MPa.m1/2 which is similar to fracture toughness of human cortical bone.
format	Article
author	Tolouei, Ranna Singh, Ramesh Sopyan, Iis Yong, Tan Chou Amiriyan, Mahdi Dung, Teng Wan
author_facet	Tolouei, Ranna Singh, Ramesh Sopyan, Iis Yong, Tan Chou Amiriyan, Mahdi Dung, Teng Wan
author_sort	Tolouei, Ranna
title	Dependence of the fracture toughness on the sintering time of dense hydroxyapatite bioceramics
title_short	Dependence of the fracture toughness on the sintering time of dense hydroxyapatite bioceramics
title_full	Dependence of the fracture toughness on the sintering time of dense hydroxyapatite bioceramics
title_fullStr	Dependence of the fracture toughness on the sintering time of dense hydroxyapatite bioceramics
title_full_unstemmed	Dependence of the fracture toughness on the sintering time of dense hydroxyapatite bioceramics
title_sort	dependence of the fracture toughness on the sintering time of dense hydroxyapatite bioceramics
publisher	Trans Tech Publications
publishDate	2011
url	http://irep.iium.edu.my/4606/ http://irep.iium.edu.my/4606/ http://irep.iium.edu.my/4606/ http://irep.iium.edu.my/4606/1/MSF_694_391.gif
first_indexed	2023-09-18T20:12:53Z
last_indexed	2023-09-18T20:12:53Z
_version_	1777407595308384256

Dependence of the fracture toughness on the sintering time of dense hydroxyapatite bioceramics

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