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Effect of uniaxial load on the sintering behaviour of 45S5 Bioglass® powder compacts

Guillon, Olivier and Cao, Shaoyong and Chang, Jaemyung and Wondraczek, Lothar and Boccaccini, Aldo R. (2011):
Effect of uniaxial load on the sintering behaviour of 45S5 Bioglass® powder compacts.
In: Journal of the European Ceramic Society, pp. 999-1007, 31, (6), ISSN 09552219, [Online-Edition: http://dx.doi.org/10.1016/j.jeurceramsoc.2010.12.031],
[Article]

Abstract

The effect of a uniaxial compressive load on the sintering behaviour of 45S5 Bioglass® powder compacts was investigated by means of sinter-forging. In comparison to free sintering, densification kinetics was enhanced and the degree of crystallization was reduced. Significantly lower sintering temperatures, i.e. 610 °C instead of 1050 °C, can be employed to obtain dense Bioglass® parts when sintering is performed under uniaxial load. The effect of mechanical loading on microstructure (pore density, shape and orientation) is discussed. The results of the investigation are relevant in connection with the development of sintered Bioglass® substrates for bone replacement devices, where both porosity and crystallinity of the part require careful control and low densification temperatures are sought.

Item Type: Article
Erschienen: 2011
Creators: Guillon, Olivier and Cao, Shaoyong and Chang, Jaemyung and Wondraczek, Lothar and Boccaccini, Aldo R.
Title: Effect of uniaxial load on the sintering behaviour of 45S5 Bioglass® powder compacts
Language: English
Abstract:

The effect of a uniaxial compressive load on the sintering behaviour of 45S5 Bioglass® powder compacts was investigated by means of sinter-forging. In comparison to free sintering, densification kinetics was enhanced and the degree of crystallization was reduced. Significantly lower sintering temperatures, i.e. 610 °C instead of 1050 °C, can be employed to obtain dense Bioglass® parts when sintering is performed under uniaxial load. The effect of mechanical loading on microstructure (pore density, shape and orientation) is discussed. The results of the investigation are relevant in connection with the development of sintered Bioglass® substrates for bone replacement devices, where both porosity and crystallinity of the part require careful control and low densification temperatures are sought.

Journal or Publication Title: Journal of the European Ceramic Society
Volume: 31
Number: 6
Uncontrolled Keywords: Sintering; Glass; Crystallization; Microstructure-final; Biomedical applications
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 18 May 2011 15:20
Official URL: http://dx.doi.org/10.1016/j.jeurceramsoc.2010.12.031
Identification Number: doi:10.1016/j.jeurceramsoc.2010.12.031
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