Corrosion under Heat Transfer: Service Failures and Laboratory Testing*

Abstract

Corrosion resistance of metals under conditions of heat transfer can be different from that under conditions where there is no heat transfer. In order to provide additional data to aid material selection for chemical plant, etc., a laboratory test has been developed in which specimens under applied heat flux are exposed to process 1iquids. The equipment used is described and details are given of results obtained in a wide range of applications including one in which anodic passivation has been used to eliminate crevice corrosion of titanium. In conclusion methods are suggested for reducing the detrimental effect of heat transfer.