What is the Spar Spray test?

Sleeping spray test is an accelerated corrosion test performed on materials and products to see how well they can handle salt damage. The material to be tested is usually placed in the chamber and a sodium chloride solution is sprayed onto its surface. The test can help scientists and product designers develop colors, coatings or film that is more resistant to salt damage. However, salt damage is very rare in most product types; The salt spray test is generally unreliable because it may not take into account many natural variables that cause corrosion. The sample is usually placed in a container controlled by temperature and a sodium chloride solution is scattered on it. The sample is wet during the test and the temperature is kept constant. The duration of the test can be anywhere between 24 and 1,000 hours. At regular intervals, the samples rotate to allow even the salt of the solutation salt.

The result of the test is rusting the surface. The number of hours until the first rust mark is recorded. BetweenOther methods include recording the number of hours until 5% of the surface rust. The criteria differ in laboratory.

is one of the best ways to prevent rust on steel is to coat steel with zinc or aluminum. Galvanized steel is coated with zinc and generally lasts about 10 hours during a salt spray test. The best powerful steel is usually covered with aluminum and zinc. It takes about 50 hours before the rust is covered with 5% of the surface.

This coating is important for applications that are exposed to weather such as roofing material. Before applying the color layer, it is recommended that the roof material is coated with zinc. This reduces corrosion associated with rain or surf.

Salt Spream test does not take up the exposure to ultraviolet rays, which are primarily responsible for degradation of painted materials. Another dubious aspect of the test is the fact that the sample is continuously exposed to wet conditions. To may not apply to most products when they are actually used. The test also creates irregularities between identical samples during testing. For example, one sample may take 5 hours to form a rust, while the same sample can take 10 hours.