ຕິດຕໍ່ພົວພັນໄຟຟ້າ are difficult for a single pure metal to meet all the requirements of the contact. With the development of vacuum switchgear to large capacity, contact materials have experienced the development process from single metal to binary and then to multicomponent composites. In different application occasions, the requirements for contact materials also have different degrees of emphasis. There are many contradictions between the physical properties of contact materials;
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