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Advances in Materials Science and Engineering
Volume 2017 (2017), Article ID 3247873, 9 pages
Research Article

Investigation on Surface Roughness of Inconel 718 in Photochemical Machining

1Department of Mechanical Engineering, SVERI’s College of Engineering Pandharpur, Maharashtra 413304, India
2Department of Mechanical Engineering, Dr. Babasaheb Ambedkar Technological University, Lonere, Raigad, Maharashtra 402103, India

Correspondence should be addressed to Nitin D. Misal

Received 26 August 2016; Accepted 27 December 2016; Published 29 January 2017

Academic Editor: Patrice Berthod

Copyright © 2017 Nitin D. Misal and Mudigonda Sadaiah. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The present work is focused on estimating the optimal machining parameters required for photochemical machining (PCM) of an Inconel 718 and effects of these parameters on surface topology. An experimental analysis was carried out to identify optimal values of parameters using ferric chloride (FeCl3) as an etchant. The parameters considered in this analysis are concentration of etchant, etching time, and etchant temperature. The experimental analysis shows that etching performance as well as surface topology improved by appropriate selection of etching process parameters. Temperature of the etchant found to be dominant parameter in the PCM of Inconel 718 for surface roughness. At optimal etching conditions, surface roughness was found to be 0.201 μm.