Salt Spray Test
Simulating corrosive environments such as coastal conditions, road‑deicing salt spray, and in‑vehicle condensation containing saline mist, this test evaluates the corrosion‑resistance of product housings, coatings, solder joints, connectors, PCBs, and metallic structures. It is used to reproduce failures like metal rusting, pin corrosion, poor contact, and leakage or short circuits, enabling assessment of whether plating, conformal coating, sealing, and anti‑corrosion processes meet specified standards. Within the test chamber, sodium chloride solution is atomized to generate fine saline droplets that adhere to the sample surface, creating an electrochemical corrosion environment that accelerates metal oxidation and coating degradation, thereby rapidly exposing weak points in corrosion protection.
Test Method
1. Prepare the test sample, ensuring that its surface is clean and free of oil or other contaminants.
2. Use a standard salt solution, typically a 5% sodium chloride solution.
3. Set the temperature, humidity, and the frequency and duration of the spray in the salt spray chamber according to the standard requirements.
4. Inspect the samples at the prescribed intervals and assess their corrosion condition.
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