Insulation resistance test device of ceramic coating under high pressure state

Abstract

The invention belongs to the field of resistance test technology of ceramic insulation coatings, and specifically relates to an insulation resistance test device of the ceramic coating under a high pressure state. The device provided by the invention comprises an insulation pedestal, a coating surface resistance shielding device, a pressure transmission device, conductive electrodes and an insulation resistance test system. A specimen with the upper surface of the device coated by the ceramic coating is disposed above the insulation pedestal; the coating surface resistance shielding device covers on the specimen; the pressure transmission device is contacted with the coating surface resistance shielding device and is used for applying pressure to the ceramic coating; two conductive electrodes pass through the coating surface resistance shielding device and are disposed above the coating surface; and the conductive electrodes are accessed into the insulation resistance test system. The device provided by the invention can accurately reflect the resistance size of the ceramic insulation coating under a specific pressure state, and can reflect relationships of the resistance size and the load, thereby preventing influences of the applied high pressure to the ceramic coating electrical insulation performance.

Description

technical field [0001] The invention belongs to the technical field of resistance testing of ceramic insulating coatings, and in particular relates to an insulation resistance testing device of ceramic coatings under strong pressure. Background technique [0002] In fusion reactors, ceramic insulating coatings are generally used to prevent annular eddy currents between metal materials. This coating is thin, only 0.3~0.5mm, and it needs to work for a long time under relatively large and complex stress conditions, while insulating ceramics The coating is brittle, and the long-term complex force has a great influence on the insulation resistance of the ceramic coating. Therefore, the fusion reactor requires the ceramic insulating coating not only to have good insulation performance, but also to be able to work for a long time under complex stress conditions, so Testing the resistance of ceramic insulating coatings under strong stress has become an essential requirement. [000...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is: the existing test device cannot accurately test the resistance of the ceramic insulating coating under the state of strong pressure

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