Toyota Laboratory Accelerated Cyclic Corrosion Test
This test procedure serves as a general purpose atmospheric corrosion test and can be applied to a wide variety of materials, coatings and interactions of materials. It has been developed to allow the uation of the corrosion resistance of metals used in vehicle bodies where there is a significant influence of chloride ions, mainly as sodium chloride from winter road de-icing salt. This test is cyclic in nature, i.e.; test specimens are exposed to changing climates over time. Test specimens are placed in an enclosed chamber and exposed to a changing climate. The test comprises 3 alternative 24 hour single cycles, methods A, B and C. Method A comprises 17 hours saltwater spraying, 3 hours forced drying, 2 hours saltwater dipping and finally 2 hours natural drying.
The number of cycle repeats and therefore the test duration is variable. This test is also referred to as a Cyclic Corrosion Test, often abbreviated to CCT.
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