IMAGE-BASED ANALYSIS OF WEAR STATE OF CERAMIC NITRIDE CUTTING TOOLS AFTER MACHINING OF NODULAR CAST IRON
Journal Title: Tribologia - Year 2011, Vol 236, Issue 2
Abstract
This paper presents the results of the wear of nitride ceramic tools, uncoated and coated with CVD-Al2O3/TiN layer, in the machining of pearlitic-ferritic nodular cast iron-EN-GJS-500 grade. Investigations include the tool wear curves and appropriate tool lives, as well as detailed identification of tool wear mechanisms occurring on both the rake and flank faces of the tools. The occurrence of various wear mechanisms depend on the machining conditions, e.g. abrasive wear, diffusive wear and chemical wear (chemical dissolution). Higher wear resistance of coated nitride tools with an additional oxide ceramic layer was confirmed. In particular, such techniques as SEM, BSE and EDX analysis were employed to analyse tool wear.<br/><br/>
Authors and Affiliations
Joanna Małecka, Wit Grzesik, Damian Kowalczyk, Piotr Kiszka
Keywords
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