Session 9: Aerospace/Defense/Military Zinc Nickel Advancements
This presentation will benefit the audience by providing insight into the transition of using advanced brush Zn-Ni and brush sulfuric acid (SAA) anodize processes for selective plating and anodizing, targeted for aircraft applications. At the end of this presentation, the audience will understand that the main benefits of these technologies include significant reduction and possible elimination of Cd for brush plating steels and hexavalent chromium for brush plating aluminum with chromic acid anodize (CAA). The audience will also see cost savings realized by reducing hazardous waste, as well as improved environmental, safety, and health issues associated with legacy brush plating.
ES3 has successfully completed Phase I and II SBIR efforts confirming three (3) low hydrogen embrittlement (LHE) alkaline zinc-nickel brush plating solutions are viable brush Cd alternatives, validating the solutions by testing such as quality, thickness, adhesion, corrosion, and hydrogen embrittlement. Likewise, ES3 successfully completed a Phase I SBIR effort that investigated/developed spot/brush anodize chemistry alternatives for aircraft applications that has now moved straight into Phase III on aircraft component applications for the US Air Force that are in-service. Both efforts developed advanced processing techniques to ensure controlled chemical composition of the as plated coatings. Additionally, these efforts included the design of a cleaner, dripless system that can cover small and large surface areas. The goal of implementing brush Zn-Ni and SAA chemistries and the dripless systems is to reduce or eliminate brush Cd and CAA and to maintain a cleaner environment when doing brush Zn-Ni and brush anodize repairs. ES3 will further validate the brush Zn-Ni and SAA anodize chemistries to ensure they meet requirements with the dripless system on additional substrate types and additional aircraft airworthiness requirements as identified by the US Air Force, Navy and Army.