Standards Development

Scope

This standard specifies the sample preparation, test device, test method, and electrochemical measurement method of metallic materials in the simulated water level fluctuation zone.

This standard is applicable to evaluating the corrosion problems of metallic materials, alloys, nonmetallic materials, etc. in the water level fluctuation zone.

This standard is also applicable to evaluating the corrosion resistance of metal materials in the tidal range zone, but it is not applicable to the splash zone.

Purpose

Purpose:to accurately evaluate the effects of wetting time and salinity on corrosion by developing test devices and methods that simulate the Water level fluctuation zone, and thereby assess the corrosion resistance of materials. Justification: Corrosion in Water level fluctuation zone is a typical failure mode for metallic materials used in marine engineering. It is necessary to test and evaluate the corrosion resistance of materials in Water level fluctuation zone before their application. This standard primarily establishes a simulated test device by partially immersing samples in water and controlling their vertical movement to mimic the seawater level fluctuation zone, which closely resembles real-world conditions. Rectangular samples are used to avoid the influence of other factors such as crevices and welding, while also facilitating control of environmental factors. The test results exhibit good reproducibility, and the experimental device is easy to operate and low in cost.