Numéro
J. Phys. IV France
Volume 02, Numéro C2, Septembre 1991
Proceedings of the Eighth European Conference on Chemical Vapour Deposition / Actes de la 8ème Confèrence Européenne sur les Dépôts Chimiques en Phase Gazeuse
Page(s) C2-549 - C2-556
DOI http://dx.doi.org/10.1051/jp4:1991265
Proceedings of the Eighth European Conference on Chemical Vapour Deposition / Actes de la 8ème Confèrence Européenne sur les Dépôts Chimiques en Phase Gazeuse

J. Phys. IV France 02 (1991) C2-549-C2-556

DOI: 10.1051/jp4:1991265

CVD COATING OF CERAMIC LAYERS ON CERAMIC CUTTING TOOL MATERIALS

R. PORAT

ISCAR LTD., P.O. Box 11, IL-Tefen 24959, Israël


Abstract
When forming cutting tool materials based on ceramic components, one must take into considration the combination of wear resistance and mechanical properties which can withstand unfavorable cutting conditions at the same time maintaining high strength and fracture toughness. Ceramic cutting tools which are designed for machining at high cutting speeds and which have high strength and fracture toughness can be formed by applying a thin layer of ceramic materials on the substrate in order to increase tool life. The good adhesion of the C.V.D. layer and the good mechanical properties of the combined coating cutting tools enable the same increase in efficiency by cemented carbide coated cutting tools. In this paper we show results for the mechanical properties, the machining results and metallographic microstructures for C.V.D coatings of aluminum oxide on different ceramic materials such as Si3N4 base materials and Al2O3 base material.



© EDP Sciences 1991