A RESEARCH INVESTIGATION OF POSSIBILITIES FOR OBTAINING HOT-HARD ELECTRODEPOSITED CHROMIUM OR CHROMIUM-BASE ALLOYS FOR CANNON
Abstract
A Cr-Fe alloy was successfully electroplated on a 4-ft steel tube simulating the rifled 40-mm smooth-bore gun tube. A 750 deg F heat treatment improved the bond between the alloy deposit and the steel bore surface, but the degree of adhension was not entirely satisfactorily. Cr-Fe alloy plating baths from commercially available trivalent Cr salts reduced the bath cost appreciably. The composition of deposits from a 2.5% Fe bath was not greatly affected by changes in agitation or oxidation of the bath. Saccharin and h3BO3 lowered the cathode current efficiency when added to sulfate baths to increase the leveling power and refine the gran of the plate. Firing tests indicated unsatisfactory adhension of the alloy plate to 3 erosion-gage weapon inserts.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 15, 1952
- Accession Number
- AD0011936
Entities
People
- George M. Scanlon
- J. Edwin Bride
Organizations
- Battelle Memorial Institute