Activation of Superalloys and Stainless Steels for Chromium Plating

Abstract

the adhesion of electrodeposited chromium on cobalt, nickel and iron- nickel based superalloys such as CG-27, Haynes alloy 25, and Udimet 700, as well as stainless steels was investigated. A number of pretreatments were used to activate these alloys. The results show that a hydrofluoric-sulfuric acid pretreatment used anodically produces excellent adhesion. A qualitative adhesion test, named the 'Groove Test' was developed to evaluate the adhesion of thick deposits of chromium on metallic substrates. The development of this test is described.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1981
Accession Number
ADA104313

Entities

People

  • E. S. Chen
  • W. Baldauf

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Adhesion
  • Alloys
  • Chromic Acid
  • Chromium
  • Classification
  • Coatings
  • Electrodeposition
  • Electroplating
  • Hydrofluoric Acid
  • Iron
  • Iron Alloys
  • Metals
  • Military Research
  • Stainless Steel
  • Steel
  • Substrates
  • Surface Properties

Fields of Study

  • Materials science

Readers

  • Metallurgy
  • Surface Engineering/Surface Coating Technology.