Abstract
Methodical principles of applying optical computer scanners to a highly productive examination of corroded surfaces are outlined. The scanned digital optical images of corroded metal surfaces allow studying their morphology and distribution of the corrosion film thickness over the surface. The proposed method was tested in a nondestructive control of corrosion film on a X18H10T type chromium steel surface upon one-hour corrosion tests in air at temperatures from 140 to 950°C. The method is highly sensitive to thin films. It allows concurrently investigating a great number of samples and, hence, comprehensively monitoring the development of corrosion.
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