Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : July 13, 2022 - July 14, 2022
Flow Accelerated Corrosion (FAC) is one of the causes of pipe wall thinning in power plants. It is widely known that FAC is usually experienced between 90 ℃ and 230 ℃, and that the maximum FAC rate is shown at about 150 ℃. Low-temperature FAC (< 90 ℃) has been also reported, however, knowledge of the effects of material and environmental factors on FAC rate at low-temperature is very limited. In this study, effects dissolved oxygen (DO, up to 20 ppb) on FAC rate of carbon steels with different Cr content (up to 1 wt.%) at low temperature (30 ℃ and 50 ℃) were investigated. The results indicate that the amount of DO require to suppress FAC depends on the Cr content of the steel and the temperature.
