Micom laboratories is pleased to announce that it now offers the ISO 11997-1 standard as part of its corrosion testing services. This method evaluates the resistance of a sample that is subjected to a corrosive environment through the use of a corrosive cyclic test. Indeed, this practice details four corrosive cycles as a means to simulate the characteristics of various corroding environments. Contrary to other corrosive cyclic standards which resort to UV testing , this method only relies on the adjustment of the temperature, moisture and on the application of the salt spray solution in order to generate the corrosive environment. Lastly, this test protocol does not provide acceptance criteria because they are established by the interested parties.
ISO 11997-1 test
The goal of ISO 11997-1 is to assess, through the use of a corrosive cyclic test, the resistance of coatings that are subject to corroding conditions. In fact, a corrosive cyclic test reproduces the characteristics of an outdoor corrosive environment in order to simulate, on an accelerated basis, an exposure to those conditions. Actually, those exposure cycles are based on three phases which are: the salt spray application, the wet stage and the dry stage. The latter two replicate the natural cyclic conditions of an outdoor exposure while the salt spray application introduces the corroding agent that assesses the performance of the sample by stressing it. It is important to mention that some corrosive cyclic tests include a UV exposure sequence into their cycle as a means to investigate the effect of UV radiations in the performance of the specimen. In addition, the methods which incorporate UV exposure into their sequence tend to lead to better results, because they take into account the influence of solar radiation on the performance of the coating. Lastly, this standard does not provide a correlation that can be used to foresee the performance of the specimen onto the field, but it may serve as a comparative tool to measure the relative performance of several coatings.
Micom offers polymer testing services for a wide selection of material and products. For more information about the ISO 11997-1 test, we invite you to contact our material testing laboratory today. It will be our pleasure to answer your questions about either of those tests.
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