Coating Characterization of Tartaric Sulfuric Acid Anodizing Compared with Chromic Acid Anodizing

Abstract

Hexavalent chromium, Cr(VI), is a confirmed human carcinogen that is increasingly regulated; therefore, an urgency to find performance-meeting alternatives has emerged. A program between the US Army Combat Capabilities Development Command Army Research Laboratory and the US Army Missile and Aviation Command Logistics Directorate (G-4) aims to optimize, qualify, and demonstrate Sikorsky's Tartaric Sulfuric Acid Anodizing (TSAA) as an alternative to Chromic Acid Anodizing (CAA). Thus far, a majority of laboratory testing is complete and reported in this interim report. The majority of the data shows promising results. However, bendability results as well as axial fatigue show that TSAA is not meeting the standard of CAA. Additional results will be forthcoming in a future report; this report provides results and gathers guidance.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2022
Accession Number
AD1172738

Entities

People

  • Jack Kelley
  • Lindsey Blohm
  • Scott Howison
  • Scott M. Grendahl

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Cyber
  • Human Systems
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Aluminum Alloys
  • Anodic Coatings
  • Anodizing
  • Army Aviation
  • Chemistry
  • Chromic Acid
  • Corrosion
  • Corrosion Resistance
  • Failure Mode And Effect Analysis
  • Films
  • Materials
  • Mathematical Analysis
  • Metals
  • Military Research
  • Standards
  • Surface Finishing
  • Tensile Properties
  • Tensile Strength
  • Tensile Testing
  • Test Methods
  • Three Dimensional

Readers

  • Surface Engineering/Surface Coating Technology.
  • Technical Research and Report Writing.