2009QRF0012_Industrial Implementation of Environmentally Friendly Nanometal Electroplating Process for Cadmium and Chromium Replacement using Low Cost Pulse Current Power Supplies
Abstract
Nanostructured Co-based and Zn-based alloys are emerging as viable alternatives to hazardous Chromium and Cadmium plating processes, respectively. While the fundamental process operating windows, related material properties and demonstration/validation testing for the nanostructured coatings are being addressed in various development projects (SERDP and ESTCP projects), a key consideration that is not being addressed in these projects that will help ensure the widespread adoption and implementation of the technology in the DoD and general industry is access to high power output, low-cost pulse plating power supplies. The main objective of the proposed effort is to develop 100kW and 200kW power supplies capable of producing direct current and low frequency pulse and pulse reverse current and to demonstrate that the nanostructured cobalt and Zn-based plating processes are not affected by the new design of these power supplies. The successful completion of the proposed effort is expected to result in alternative technologies for cadmium and hard chrome coatings that provide enhanced material performance and eliminate the need for the toxic and hazardous Cd and Cr6+ electroplating baths. The nanocrystalline coatings would allow for the retention of numerous benefits associated with Cd and Cr coating technologies (i.e., non-line-ofsight application, excellent adhesion, dimensional consistency and superior surface finish) and allow for the use of existing DoD plating infrastructure. This will significantly reduce the time and cost to practical implementation. Implementation of these coating on aircraft and defense related components should lead to improved performance and lower life-cycle costs thereby improving the overall effectiveness of the war-fighter.
Document Details
- Document Type
- Accomplishment
- Publication Date
- Oct 01, 2011
- Source ID
- 77b39b95478027292e5bb4fdab898a26