Development of High Corrosion-resist Surfaces for Metering Roll

Abstract

We reported corrosive phenomenon of metering roll from an electrochemical standpoint last year. Its result showed a few combinations of top-coat and under-coat may show higher corrosion resistance than conventional coating. So actual corrosion resistance was verified by corrosion test in dynamic condition with test plant size machine. As a result, Cr coating on Ni-W alloy coating showed superior corrosion resistance.