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Cathodic arc TiAlN PVD coatings for machining applications

Author(s): Ch.Shoba, D.Siva Prasad

This paper is concerned with the variations in the specific cutting pressure with TiAlNCathodic-arc PhysicalVapor deposition (CAPVD) coated inserts while machiningAISI 1040 carbon steel. To reduce the cost and to make the process environmentally safe, dry cutting is chosen. Coated and uncoated carbide tools and different cutting conditions were tested in dry condition. Cutting forces were recorded at different conditions and specific cutting pressure is calculated. The adhesion bond of the coatings is analyzed using ScanningElectronMicroscopy (SEM).Comparisonwasmade between coated and uncoated carbide tools under the same conditions of machining.

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