Page 27 - Demo

Issue 143 August 2024 PCMI Journal 27
PCM of Difficult-to-Etch Metals and Alloys: Nickel- and Cobalt-Based Superalloys
Emeritus Professor David Allen, Cranfield University
some electrolytic photoetching systems with reduced HSE impacts that have
been used to etch nickel- and cobalt-based superalloys successfully.
Figure 2. Polished edge profile fabricated by electrolytic photoetching of 100 μm
thick nickel-titanium shape memory alloy in methanol-sulphuric acid [24].
Figure 3. Duratherm® 600 (41μm thick) miniature H-spring for a prototype
medical device [20].