A kind of silver-metal oxide composite material and its preparation method and application as electric contact material
A composite material and oxide technology, applied in the direction of contacts, circuits, electrical switches, etc., can solve the problems of uneven distribution of core and edge structures, shortened production process, long production process, etc., to avoid recrystallization and growth, Shorten production processes and improve organizational effectiveness
Active Publication Date: 2022-05-31
CENT SOUTH UNIV
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Problems solved by technology
[0005] The purpose of the present invention is to solve the problems of uneven distribution of core and edge tissue, difficult follow-up processing and long production process of Ag-MeO material due to inconsistent deformation degree of material core and edge during the extrusion process, and make the oxide The particles are dispersed and distributed on the silver matrix, and at the same time, the bond between the dispersed oxide and the silver matrix is guaranteed to improve the overall performance of the product, shorten the production process, and reduce the production cost
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Abstract
The invention discloses a method for preparing a silver-metal oxide composite material. First, a silver-metal oxide sintered body is prepared by powder metallurgy, and then the sintered body is prepared into a silver-metal oxide material by an extrusion on-line quenching process. . The silver-metal oxide material prepared by the present invention has oxide particles dispersedly distributed on the silver matrix, and has a uniform structure; it has excellent welding resistance, good arc erosion resistance and low and stable contact resistance, and is easy to use. It is weldable and has no harm to human body and environment, is suitable for industrial production, and can replace toxic silver-cadmium oxide electrical contacts.
Description
A kind of silver-metal oxide composite material and preparation method thereof and as electrical contact material material application technical field [0001] The invention belongs to the field of electrical functional materials, and is a manufacturing method of a silver-based composite material. technical background Electrical contacts are important components of electrical equipment such as relays, low-voltage circuit breakers and contactors, which are responsible for When the pneumatic system is working, it maintains the closing and breaking functions of the circuit and bears the load current. Its performance directly affects the electrical equipment. reliability, stability and service life. Electrical contact materials will undergo a series of physical and chemical reactions during the working process. Therefore, the performance requirements are more stringent. The ideal electrical contact material needs to have good resistance to welding and arc erosion prope...
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IPC IPC(8): C22C5/06C22C32/00C22C1/05C22F1/14H01H1/0237H01H11/04
Inventor 吴春萍徐国富
Owner CENT SOUTH UNIV