Heat Treatment of Chromium Plate on Steel.
Abstract
The object of this research is to determine maximum effects of very high temperature heat treatment of chromium plated steel. Chromium plate on steel is hard, brittle, and full of cracks which reach to the base metal. Corrosion resistance is poor. Heat treatment of the chromium plate causes (1) formation of alloys of iron and chromium at the interface, and (2) elimination of cracks with resultant tremendous increase in corrosion resistance of the plated surface, and (3) softening of the plate with increase in its ductility. During heat treatment the oxidation of the chromium surface results in its being hardened skin-deep. Etching with FeCl3 is necessary to reveal the structure of the Cr plate and alloy formation. The presence of high trivalent Cr content in plating bath inhibits building up thick plates of Cr on steel.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 12, 1936
- Accession Number
- ADA953889
Entities
People
- P. R. Kosting