Page 29 - Demo

Issue 143 August 2024 PCMI Journal 29
PCM of Difficult-to-Etch Metals and Alloys: Nickel- and Cobalt-Based Superalloys
Emeritus Professor David Allen, Cranfield University
Acknowledgements
I wish to thank the following for their various contributions to this paper:
• Chris Bonsell, Tecomet, Woburn, MA, USA
• Dr Paul Campbell, Zapp Precision Metals GmbH, Unna, Germany
• Glenn and Sean Dooley, Northwest Etch Technology, Tacoma, WA, USA
• Julien Duvillet and Damian von Rickenbach, CMT Rickenbach, La Chaux-
de-Fonds, Switzerland
• Peter Engel, Newcut by Fathom, Newark, NY, USA
• Phil Greiner, PEI, Milford, MA, USA
• Steffen Herz, Atztechnik Herz GmbH & Co., Epfendorf, Germany
• Fredrik Ingvarsson, Mikroponent, Värnamo, Sweden
• Dr Peter Jefferies, Heatric division of Parker, Birmingham, UK [PJ now PCM
Advice, UK]
• Eric Kemperman, Etchform BV, Hilversum, The Netherlands
• Ana Lambert, Tech-Etch, Plymouth, MA, USA
• Kirk Lauver, Chemcut Corporation, State College, PA, USA
• Ken and Steven Marino, Orbel Corporation, Easton, PA, USA
• Aurelia Montoya, Elcon Precision, San Jose, CA, USA
• Paul Rea, Photofabrication Ltd., St Neots, UK
• Jimmy Trost, Vaga Industries, South El Monte, CA, USA
and
• Dr Luke Watson, Tecan Ltd., Weymouth, UK.
References
1. A Kracke, Superalloys, the most successful alloy system of modern times -
past, present and future, 7th International Symposium on Superalloy 718 and
Derivatives, The Minerals, Metals and Materials Society, 2010.
2. Introduction to Aerospace Materials, Ed. AP Mouritz, Woodhead Publishing
Ltd., 2012. ISBN 978-1-85573-946-8.
3. DM Allen, The Principles and Practice of Photochemical Machining and
Photoetching, pp. 38-9, 1986. ISBN 0-85274-443-9.
4. PCMI data published in DM Allen, Photochemical Machining and
Photoelectroforming, p. 104, 2015. ISBN 978-1-5262-0188-1.
5. A Visser and D Weissinger, Spray Etching of Stainless Steel, PCMI #4000, 1993.
6. DM Allen and PJ Gillbanks, The photochemical machining of some
difficult-to-etch metals, Proceedings of Technical Program of National