ScholarWorks@경상국립대학교

초록

In this study, the environmental resistance and coating integrity of a surface-coated Al6061-T6 alloy used in multifunctional radar rotary joints were investigated. We subjected specimens to extreme temperature conditions (-32 to +71 °C) to simulate the operational environment of military equipment. Environmental tests, performed according to the MIL-STD-810G standards, included prolonged low- and high-temperature storage to evaluate the durability of the coatings under thermal stress. Following these tests, visual inspections were conducted to identify surface cracks and defects. We then extracted, polished, and examined the cross-sections of the specimens using scanning electron microscopy (SEM) to assess the coating integrity and identify microstructural changes, such as delamination or cracking at the coating substrate interface. The SEM analysis provided detailed insights into the performance of the coatings under extreme conditions. Therefore, this study contributes to the development of durable and effective components for advanced radar systems and other military equipment.

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