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The equivalent salt deposit density (ESDD) is one of the appropriate parameters to describe the level of contamination on the surface of insulator. Because of the unique properties of silicone rubber, some contamination on the surface of silicone rubber is difficult to be dissolved, which is not related to the pollution flashover. This paper proposes the equivalent dissolved salt deposit density (EDSDD)...
RTV (Room Temperature Vulcanizing silicone rubber) is widely applied in power grids in China to prevent serious pollution flashover accident on the porcelain and glass insulators. The aging of RTV coating inclines to decrease anti-pollution flashover performance of the coating insulators, so the RTV coating need to be repaired after a period of operation time. The mechanical properties of RTV (such...
Closely related to the flashover performance of insulators, the conductivity of partial surface is a new parameter to present the contamination without damaging the contamination on the surface of the insulators. This paper introduces a special probe, which is newly designed for measuring the conductivity of partial surface. Using this probe, we studied the effect of soluble salt component on the...
GaN thin film grown on sapphire substrate of 50 mm*50 mm in size are successfully bonded and transferred onto Si substrate using Au-Sn wafer bonding followed by grinding, chemical mechanical polishing (CMP) and dry etching. The GaN/sapphire structures are integrated to receptor Si substrate by thermal pressure bonding process. The bonding medium comprises Au-Sn multilayer composite deposited directly...
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