Microstructural study of tungsten influence on Co-Cr alloys
Identifieur interne : 000184 ( PascalFrancis/Checkpoint ); précédent : 000183; suivant : 000185Microstructural study of tungsten influence on Co-Cr alloys
Auteurs : A. Karaali [Algérie] ; K. Mirouh [Algérie] ; S. Hamamda [Algérie] ; P. Guiraldenq [France]Source :
- Materials science & engineering. A, Structural materials : properties, microstructure and processing [ 0921-5093 ] ; 2005.
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- Pascal (Inist)
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Abstract
Alloying elements, such as W, Mo, Mn, ..., are of a great importance in the preoxidation of dental alloys and, consequently, on the ceramic/metal bond quality. This study deals with the effect of tungsten addition on the microstructural state of Co-Cr dental alloys, before the ceramisation process. These materials were prepared by unidirectional solidification. Their characterization has been carried out, using transmission electron microscopy (TEM) and X-ray diffraction. It shows that the addition of tungsten up to 8 wt.% induces structural transformations, which are believed to be linked to the added amount of tungsten.
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