MEASUREMENT OF RESIDUAL STRESSES IN THE COATING DEPOSITED BY BRUSH-PLATING ON A THIN-WALLED SHORT CYLINDER

摘要

Determination of residual stresses was studied in brush-plated nickel coatings deposited from sulphate electrolyte on the outer surface of a short thin-walled cylindrical steel substrate. Residual stresses throughout coating thickness were calculated according to the change of circumferential deformation on inner surface, measured during depositing process. The value of residual stresses was 705 N/mm~2, which is comparable the result 807 N/mm~2 obtained previously with the use of a strip brass substrate, and is approximately three times higher than for the coatings deposited from similar sulphate electrolytes in the bath.