Oxide Surface layers obtained in Ceramic Carbides through Laser treatment. | [Proceedings 6th International Bhurban Conference on Applied Sciences and Technology • 2009]

Author(s):

1. F. Kiani: Department of Materials Engineering, School of Chemical and Materials Engineering, National University of Sciences and Technology, Islamabad, Pakistan

2. A. A. Khan: Department of Materials Engineering, School of Chemical and Materials Engineering, National University of Sciences and Technology, Islamabad, Pakistan

3. N. Glandut: Science des Procedes Ceramiques et Traitements de Surface (SPCTS), Universite de Limoges, 123 Av. Albert Thomas, Limoges, CEDEX, France

4. J. C. Labbe: Science des Procedes Ceramiques et Traitements de Surface (SPCTS), Universite de Limoges, 123 Av. Albert Thomas, Limoges, CEDEX, France

Abstract:

Ceramic carbides pose a continuous challenge to the ceramic engineers and scientists due to their very high melting points, low diffusion coefficient and possibility of interaction with the ambient atmosphere at high temperatures. Special techniques are therefore required to densify these carbides to near theoretical density. Additives may help in lowering their sintering temperature but at the same time these additives are responsible in degrading the mechanical and thermal properties of these ceramics. In the present work Ytterbium fiber laser was exposed on ZrC, TiC and TiC+TiB2 (composite) samples under various experimental conditions to study the formation of oxide layers and surface morphologies. Compared to previous works done on the same materials, a controlled oxygen environment was used rather than an inert environment. Results have shown the presence of dense amorphous layers as a result of this treatment.

Page(s): 1-7

DOI: DOI not available

Published: Journal: Proceedings 6th International Bhurban Conference on Applied Sciences and Technology , Volume: 1, Issue: 0, Year: 2009

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