Lubricated Wear of Machinable Lithium Disilicate Glass Ceramic

An experimental investigation was performed to study the wear of a promising dental ceramic, i.e., machinable lithium disilicate glass ceramic, under lubrication conditions, in particular, to examine effects of the surface finish and applied load on wear. Our previous work has shown that a fine fini...

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Bibliographic Details
Published in:Key engineering materials 2017-06, Vol.739, p.18-22
Main Authors: Elbourne-Binns, Laura, Yin, Ling, Peng, Zhong Xiao, Baena, Juan Carlos
Format: Article
Language:English
Subjects:
Aluminum oxide
Ceramics
Dental materials
Distilled water
Drying
Glass
Lithium
Lubrication
Reciprocation
Sliding friction
Surface finish
Surface preparation
Surface roughness
Wear mechanisms
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Summary:An experimental investigation was performed to study the wear of a promising dental ceramic, i.e., machinable lithium disilicate glass ceramic, under lubrication conditions, in particular, to examine effects of the surface finish and applied load on wear. Our previous work has shown that a fine finish in a dry condition did not necessarily translate to the lowest wear volume due to changes in the dominant wear mechanisms. This study tested the ceramic specimens with four average surface roughness values of Sa = 143 nm, 217 nm, 353 nm, and 692 nm on a reciprocating sliding friction rig against alumina balls with two applied forces of 5 N and 25 N in a bath of distilled water. Comparing with the results obtained in the dry conditions, this study shows that surface roughness of approximately 200 nm may be suitable for surface preparation of crowns made from the material in the wet and dry wear conditions in the oral environment.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.739.18