Accession Number : AD0016466

Title :   A RESEARCH INVESTIGATION OF POSSIBILITIES FOR OBTAINING HOT-HARD ELECTRODEPOSITED CHROMIUM OR CHROMIUM-BASE ALLOYS FOR CANNON

Descriptive Note : Interim technical rept.,

Corporate Author : BATTELLE MEMORIAL INST COLUMBUS OHIO

Personal Author(s) : SAFRANEK,WILLIAM H. ; SCANLON,GEORGE M.

Report Date : 09 APR 1953

Pagination or Media Count : 41

Abstract : A hot-hard Cr-Fe alloy deposited on the bore surface of an erosion-gage weapon insert showed no sign of deterioration after 50 rounds of test firing. The rate of plating was about 0.001 in./hr for a cathode current density of 100 amp/sq ft. Cracking, which appeared in plates applied at 150 amp/sq ft or more, indicated a shift from tensile to compressive stress in the plate. (See also AD-11210)

Descriptors :   BORES, CATHODES, COMPRESSIVE PROPERTIES, CRACKS, CURRENT DENSITY, ELECTRIC CURRENT, PLATING, RATES, SURFACES, TENSILE STRESS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE