The connection between salt spray test and natural environmental exposure test

pThe Salt Spray Test and Natural Environmental Exposure Test/pZDeTextile Testing Instruments, Testing Equipment Manufacturer
p1, if a product sample is tested in a natural exposure environment, corrosion may take up to one year. However, if tested under artificially simulated salt spray environment conditions, similar results can be obtained within 24 hours. Salt spray test is an environmental test that mainly uses the artificial simulated salt spray environmental conditions created by salt spray testing equipment to assess the corrosion resistance of products or metal materials. It is divided into two categories, one is natural environment exposure test, and the other is artificial accelerated simulated salt spray environment test. The artificial simulation of salt spray environment test is conducted using a testing equipment with a certain volume spaceamp; Flash; The salt spray test chamber is used to artificially create a salt spray environment within its volumetric space to assess the quality of the products salt spray corrosion resistance. Compared with the natural environment, the salt concentration of chloride in its salt spray environment can be several times or tens of times higher than that in general natural environments, greatly improving the corrosion rate. Conducting salt spray tests on products also greatly shortens the time required to obtain results.ZDeTextile Testing Instruments, Testing Equipment Manufacturer
2、 Salt spray corrosion and atmospheric corrosion. Salt spray corrosion is a common and destructive atmospheric corrosion. The salt spray referred to here refers to the atmosphere of chlorides, whose main corrosive component is chloride salts in the oceanamp; Flash; Sodium chloride, which mainly comes from the ocean and inland saline alkali areas. Corrosion is the damage or deterioration of a material or its properties under the influence of the environment. Most corrosion occurs in the atmospheric environment, which contains corrosive components and factors such as oxygen, humidity, temperature changes, and pollutants. The corrosion of metal materials by salt spray is caused by the electrochemical reaction between the chloride ions that penetrate the oxide and protective layers on the metal surface and the internal metal. At the same time, chloride ions contain a certain amount of hydration energy and are easily adsorbed on the pores and cracks on the metal surface to displace and replace oxygen in the chloride layer, transforming insoluble oxides into soluble chlorides, making passive surfaces active and causing extremely adverse reactions to the product/ p p/pZDeTextile Testing Instruments, Testing Equipment Manufacturer