Pretreatment of Superalloys and Stainless Steels for Electroplating.
Abstract
Process for activating surfaces of superalloys and stainless steels prior to electroplating a metal such as chromium thereon, whereby a metal deposit having excellent adhesion to the substrate is obtained. The article is activated by anodic etching in a novel activation solution containing about 55% to 80% by volume of H2SO4 and about 1% to 10% by volume of commercial 52% hydrofluoric acid, preferably an aqueous bath containing 65% by volume of 95-98% H2SO4 and 5% by volume of 52% hydrofluoric acid at 30 A/dm to the second power and 20 degrees C for one minute. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 13, 1981
- Accession Number
- ADD008991
Entities
People
- Edward S. Chen
- William Baldauf
Organizations
- United States Army