Journal article
(Invited) Electrodeposition of Graded Compositional Coatings: Correlating Process Parameters with Structural Features
Meeting abstracts (Electrochemical Society), v MA2026-01(26), pp 1342-1342
07 Jul 2026
Abstract
When considering applications of graded compositional coatings, shock physics is not one that readily comes to mind. However, developing processes to fabricate materials with graded compositions/densities has been a long-standing challenge in the shock physics community to understand material behavior under extreme conditions. Ideally, samples for testing must be compositionally graded over a thickness of a few millimeters with grain sizes on the micron scale. Electrodeposition is a promising fabrication technique to reliably produce graded coatings that meet these requirements. We present key findings learned using gold-silver compositional gradients as an exemplary system. The impact of applied current pulse parameters, temperature, and electrolyte composition on the compositional gradient will be discussed. Characterization techniques (SEM, EBSD, XPS) and inferential electrochemical measurements (chronoamperometry) are used to correlate deposition parameters with structural features. The more challenging system of rhenium-cobalt will also be discussed from the perspective of developing a suitable electrolyte to produce a thick pure Re film and subsequent compositional gradient. Successful plating of rhenium-cobalt gradients was observed using crowded solvents and pulse electrodeposition. However, mitigating electrolyte stability and decomposition remains an ongoing challenge. Finally, we will present findings on electroplating onto additively manufactured plastic and ceramic templates to produce gradient structures. Throughout this presentation, we will discuss the many lessons learned from scaling rhenium electrodeposition that are applicable to metal systems in crowded solvents or non-aqueous electrolytes. Emphasis will be placed on the role of substrate selection and mitigating undesirable anodic reactions.
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Details
- Title
- (Invited) Electrodeposition of Graded Compositional Coatings: Correlating Process Parameters with Structural Features
- Creators
- Michael McBride - Los Alamos National LaboratoryIris Denmark - Los Alamos National LaboratoryNathan Brown - Los Alamos National LaboratoryAmanda Rutledge - Los Alamos National LaboratoryAlex J Mirabal - Los Alamos National LaboratoryCourtney L Clark - Los Alamos National LaboratoryJordyn Nevada Janusz - Los Alamos National LaboratoryJamie A Stull - Los Alamos National LaboratoryNicholas B. Watkins - Los Alamos National LaboratoryDaniel E Hooks - Los Alamos National Laboratory
- Publication Details
- Meeting abstracts (Electrochemical Society), v MA2026-01(26), pp 1342-1342
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- A.J. Drexel Nanomaterials Institute
- Other Identifier
- 991022207076804721