How to evaluate and test the corrosion resistance of high-purity white molybdenum wire? Are there some common standards or testing methods?

There are a series of standardized test methods and experimental procedures for evaluating and testing the corrosion resistance of high-purity white molybdenum wire. Common evaluation and testing methods and corresponding standards are:

Salt spray testing is a common method used to evaluate the corrosion resistance of metallic materials. Expose the sample to a salt spray environment and observe surface corrosion to evaluate the material's corrosion resistance. Relevant standards refer to ASTM B117.

Electrochemical corrosion testing can evaluate the corrosion behavior of materials in electrochemical environments. General testing methods include polarization curve testing and electrochemical impedance spectroscopy analysis. Relevant standards include ASTM G5 and ASTM G61.

The accelerated corrosion test method is to simulate the corrosion process in the actual living environment to accelerate the test of the corrosion resistance of the material. Common accelerated corrosion tests include wet corrosion test and corrosion shower test. Relevant standards include ASTM G85.

Environmental exposure testing exposes samples to conditions that simulate actual environments, such as humidity, temperature, and concentrations of chemical substances, to ultimately evaluate the corrosion resistance of materials in actual use environments. Relevant standards vary depending on test conditions.

Microstructural analysis can indirectly evaluate the corrosion resistance of materials by observing the microstructural changes of materials, such as grain size, grain boundaries, phase distribution, etc.