Sodium Hydroxide Etching Detection

Metals and alloys: carbon steel, stainless steel, aluminum alloy, copper alloy, titanium alloy, nickel based alloy, etc
Polymer materials: PP, PE, PTFE, PVC, epoxy resin, rubber, etc.
Building materials: concrete, mortar, aggregates, ceramic tiles, glass, etc.
Surface treatment and coating: anti-corrosion coating, enamel layer, electroplating layer, etc.
Composite materials: carbon fiber/glass fiber reinforced composite materials, sealing materials, etc.
Chemical equipment: components such as storage tanks, pipelines, reaction vessels, heat exchangers, etc. that come into contact with NaOH medium.
Pressure equipment: boilers, pressure vessels, and their welded joints.
Building components: basement walls, swimming pool inner walls, concrete structures.
Electronic and medical devices: components that require alkali resistant cleaning or disinfection.

Uniform corrosion assessment: quality loss rate, corrosion rate, surface morphology observation
Electrochemical testing: open circuit potential, polarization curve, electrochemical impedance spectroscopy (EIS), to evaluate corrosion kinetics parameters.
Corrosion product analysis: EDS composition determination, XRD phase identification, to clarify the corrosion mechanism.
Comparison of mechanical properties: changes in tensile strength, yield, and hardness before and after corrosion to evaluate structural integrity
Coating and surface layer: adhesion changes, blistering/peeling rating, corrosion diffusion area
Localized corrosion detection: pitting density and depth, crevice corrosion sensitivity, intergranular corrosion tendency
Stress Corrosion Cracking (SCC): Determination of Stress Corrosion Threshold, Crack Propagation Rate, Alkali Brittle Sensitivity Test