On the Erosion- and Arc-Resistance when Tested with DC- and AC-Stress by the Example of Silicone Elastomers

The paper provides inclined-plane-test results that were collected with modified upper electrodes made from tungsten, gold-plated tungsten and a platinum-iridium-alloy. Tungsten- as well as gold-plated tungsten electrodes show corrosion effects like those that are found with steel in the standardized test. The platinum-iridium-alloy does neither show corrosion effects nor weight loss even after a total test time of 40 hours. It can be considered corrosion resistant under the applied conditions in the inclined-plane-test. Nevertheless, a comparative evaluation of the erosion depth and the weight loss of the specimens doesn't show a significant influence of the electrode-material in the deterioration of the tested material. Further investigations with the high voltage arc-test with AC and DC…