Effect of alloyed target vis-à-vis pure target on machining performance of TiAlN coating

Mandal, Paranjayee and Paul, Soumitra (2013) Effect of alloyed target vis-à-vis pure target on machining performance of TiAlN coating. International Journal of Advanced Manufacturing Technology, 66 (5-6). pp. 721-731. ISSN 0268-3768

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    Abstract

    Typically closed-field unbalanced magnetron sputtering (CFUBMS) and controlled cathodic arc deposition techniques having four or six pure or alloyed targets are employed for commercial titanium aluminium nitride (TiAlN) coating of cutting tools. The role of the use of alloyed target vis-à-vis pure target on the coating characteristics and the machining performance of TiAlN-coated tools has not been studied in detail. In the present work, TiAlN coating has been deposited on cutting tools using a pulsed DC, dual-cathode CFUBMS system to capture the role of the type of target on machining performance. The deposition rate in the case of the alloyed target has been found to be much higher as compared to the pure target. Such coatings deposited from alloyed targets also provided significantly better machining performance in dry turning of low-carbon and high-carbon steel. Dry turning of SAE 1070 high-carbon steel at 160 m/min did not yield more than 100 μm of average flank wear on the same insert coated using alloyed targets for a machining time of more than 3 min.

    ORCID iDs

    Mandal, Paranjayee ORCID logoORCID: https://orcid.org/0000-0002-8440-703X and Paul, Soumitra;