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Multi-component novel silver-based contact material and preparation method thereof

A contact material, multi-component technology, applied in the direction of contacts, electrical components, metal processing equipment, etc., can solve the problems of surface temperature rise, affecting the stability and service life of electrical appliances, poor wettability, etc., to reduce Effects of splash loss, excellent arc extinguishing performance, low material transfer

Pending Publication Date: 2022-06-28
江苏智昂新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional AgCdO contact material has good arc erosion resistance, excellent welding resistance, low and stable contact resistance, but its wide application is limited due to the impact of cadmium toxicity on human health and ecological environment.
Although AgSnO 2 The performance of the contact material is equivalent to that of the AgCdO contact material, but during service, Ag and SnO 2 The poor wettability between them will easily lead to the separation of two phases during service, and the formation of non-conductive ceramic SnO on the contact surface 2 The aggregation of particles, which in turn causes the problem of increased contact resistance and surface temperature, which seriously affects the stability and service life of electrical appliances

Method used

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  • Multi-component novel silver-based contact material and preparation method thereof

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Embodiment 1

[0044] The invention provides a new type of silver-based contact material with multiple components, which includes:

[0045] Ag: 80.0~95.0wt.%;

[0046] ZrB 2 : 2.0~5.0wt.%;

[0047] ZrO 2 : 3.0~15.0wt.%;

[0048] The sum of the mass percentages of the above components is 100%.

[0049] Since borides have both metal bonds and covalent bonds, they have the dual nature of ceramics and metals. Boride ceramics have excellent comprehensive properties such as high hardness, high modulus, good thermal conductivity and high chemical stability. Ideal reinforcement phase for silver-based contact materials. The multi-component new silver-based contacts made in the above proportions have excellent arc extinguishing performance, arc erosion resistance, low material transfer and mass loss. ZrB 2 The main role in the arc erosion process is ZrB 2 The easy decomposition characteristics improve the arc extinguishing ability of the material, and the boron is oxidized to B in the air 2 O...

Embodiment 2

[0051] The invention provides a new type of silver-based contact material with multiple components, which includes:

[0052] Ag: 92.0wt.%;

[0053] ZrB 2 : 5.0wt.%;

[0054] ZrO 2 : 3.0wt.%.

Embodiment 3

[0056] The invention provides a new type of silver-based contact material with multiple components, which includes:

[0057] Ag: 91.0wt.%;

[0058] ZrB 2 : 4.0wt.%;

[0059] ZrO 2 : 5.0wt.%.

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Abstract

The invention discloses a multi-component novel silver-based contact material and a preparation method thereof, boride in the material simultaneously has metallic bonds and covalent bonds and has duality of ceramic and metal, boride ceramic has excellent comprehensive characteristics such as high hardness, high modulus, good thermal conductivity and electrical conductivity, high chemical stability and the like, and the material has excellent comprehensive properties such as high temperature resistance and high temperature resistance. Therefore, the silver-based contact material becomes an ideal reinforcing phase. The novel multi-component silver-based contact prepared according to the proportion has excellent arc extinguishing performance and arc erosion resistance, and low material transfer and mass loss. ZrB2 is mainly used for improving the arc extinguishing capacity of the material due to the characteristic that ZrB2 is easy to decompose in the arc erosion process, and boron is oxidized into B2O3 in air and has certain deslagging capacity. And meanwhile, oxygen generated by decomposition of ZrO2 under the action of an electric arc also has an arc extinguishing effect, and Zr and Ag can form a solid solution, so that the splashing loss is reduced.

Description

technical field [0001] The invention relates to the technical field of silver-based electrical contacts, in particular to a multi-component novel silver-based contact material and a preparation method thereof. Background technique [0002] As the core components of switchgear such as contactors, circuit breakers, relays, instruments, current limiting switches, motor protectors, micro switches, leakage protection switches, and automotive electrical appliances, electrical contacts are mainly responsible for making and breaking circuits and loads. The current task, its performance directly affects the reliability, stability and service life of the electrical system. Therefore, the electrical contact material is required to have good electrical and thermal conductivity, superior breaking, welding resistance, electrical wear resistance, low and stable contact resistance, good oxidation resistance, corrosion resistance, chemical stability , mechanical properties and machinability...

Claims

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Application Information

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IPC IPC(8): H01H1/0237H01H11/04C22C5/06C22C32/00B22F1/12B22F1/14B22F3/04B22F3/10B22F9/04
CPCH01H1/0237H01H11/048C22C5/06C22C32/0005C22C32/0047B22F9/04B22F3/04B22F3/1007B22F2009/043
Inventor 王献辉张涛
Owner 江苏智昂新能源科技有限公司