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Silver-copper-based metal oxide electrical contact material containing additive elements and preparation method thereof

A technology of adding elements and contact materials, applied to contacts, circuits, electric switches, etc., can solve the problems of low bonding strength, waste of silver resources, poor wettability, etc., and achieve improved erosion performance and good economic benefits and social benefits, and improve the effect of welding resistance

Inactive Publication Date: 2011-12-21
张树堂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this patented process method is that the tin oxide powder has not undergone surface modification treatment, has poor wettability, poor surface activity, and is directly mixed and pressed with other components to form a contact material, so that the tin oxide powder can be mixed with other components. The bonding strength between component powder grains is not high, and the bonding force is very low
And wasted a lot of silver resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Silver -containing silver -copper cadmium oxide electro -tentacles and preparation methods:

[0044] (1) The quality ratio of the electrical contact material of this case is:

[0045] Silver cadmium oxide alloy: 34%, conductive ceramics: 3%, nickel alloy: 1%, silver copper alloy: balance.

[0046] (2) The quality ratio of the single -quality group element of the electrical contact material of this example is:

[0047] A, silver cadmium alloy: 62.11%silver, 3.1%of rare earth aluminum alloy, and cadmium waste.(The quality percentage of cadmium oxide alloy after oxidation is 58.82%silver, 3.53%of aluminum and aluminum and rare earth oxides, and the balance of cadmium oxide).

[0048] B. Conductive ceramics (TI3SIC2) 3%.

[0049] C. Nickel alloy 1%.

[0050] D. Silver copper alloy: 24.19%silver, 4.84%of rare earth copper alloys, 3.23%alloy, and copper balance.

[0051] (3) The preparation method of the electrical contact material of this case is:

[0052] A. According to the co...

Embodiment 2

[0062] The silver content of 40%± 1%containing the adding element silver -copper -based zinc oxide electro -tentacles and preparation methods:

[0063] (1) The quality ratio of the electrical contact material of this case is:

[0064] Silver oxide alloy: 38%, conductive ceramics: 3%, nickel alloy: 1%, silver copper alloy: balance.

[0065] (2) The quality ratio of the single -quality group element of the electrical contact material of this example is:

[0066] A, silver -zinc alloy: 70.45%silver, 3.29%of rare earth aluminum alloy, and zinc.(The mass percentage of the silver oxide alloy after oxidation is 58.82%silver, 3.53%of alumina and rare earth oxides, and zinc oxide margin).

[0067] B. conductive ceramics (TI 3 SIC 2 ) 3%.

[0068] C. Nickel alloy 1%.

[0069] D. Silver copper alloy: 26.79%silver, 5.36%of rare earth copper alloys, 3.57%alloy, and copper balance.

[0070] (3) The preparation method of the electrical contact material of this case is:

[0071] A. According to t...

Embodiment 3

[0074] The silver content of 45%± 1%containing the adding element silver, copper -based tin oxide electrical contact material and its preparation method:

[0075] (1) The quality ratio of the electrical contact material in this case is:

[0076] Silver oxygen alloy: 42%, conductive ceramics: 3%, nickel alloy: 1%, silver copper alloy: balance.

[0077] (2) The quality ratio of the single -quality group element of the electrical contact material of this example is:

[0078] A. The proportion of silver tin alloys: 75.87%silver, 3.37%of rare earth aluminum alloy, 0.84 molybdenum, and tin waste.(The mass percentage of the quality of silver oxide alloy after oxidation is: 71.43%silver, 3.8%of alumina and rare earth oxide, 0.95 molybdenum oxide, and the balance of tin oxide).

[0079] B. conductive ceramics (TI 3 SIC 2 ) 3%.

[0080] C. Nickel alloy 1%.

[0081] D. The proportion of silver and copper alloys: 27.87%silver, 5.56%of the rare earth copper alloy, 3.7%alloy, and the amount of ...

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Abstract

The invention discloses a silver copper based metal oxide electrical contact material containing adding elements and a preparation method thereof. The electrical contact material is characterized by comprising the following components in percentage by weight: (20-50)% of silver metal oxide alloy, (0.3-9)% of electric conductive ceramics, (0.7-1.8)% of lanthanum nickel alloy, (0.7-4.9)% of adding elements, and the balance of silver copper alloy; and the contact material provided by the invention comprises the following simple substance elements in percentage by weight: (15-63)% of silver, (4-25)% of metal oxide, (0.3-9)% of electric conductive ceramics, (0.01-5)% of rear earth, (0.7-4.9)% of adding elements, and the balance of copper. The preparation method is characterized by comprising the following steps: smelting, pulverizing and milling (silver metal alloy power, and silver copper alloy powder) in proportion for optimization performances of the material, cladding electric conductive ceramic micro powder by silver, mixing powder of the adding elements in a certain mass ratio, pressing an ingot blank, sintering and extruding, rolling or drawing, thus obtaining the contact material. The electrical contact material provided by the invention has the advantages of low cost and excellent overall performance.

Description

Technical field [0001] The invention of silver -copper -based electrical contact materials involved in the field of electrical alloys specifically refers to a silver -copper fund -owned oxide electrical contact material and its preparation methods containing the addition of elements. Background technique [0002] The core components of relays, contactors, and circuit breakers are electrical contacts (points). It undertakes the heavy task of connecting the segments.It is an important guarantee for electrical safety. [0003] At present, the contact materials for marketing are basically two types of contact materials: silver and copper -based.The copper -based contact material is partially used in the circuit breaker and switch. Although the copper -based contact material is low in price, the copper -based contact has poor antioxidant resistance. After the installation, the length of the commercial use is different.The surface of the contact will form oxide film. If there is then u...

Claims

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Application Information

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IPC IPC(8): H01H1/021H01H11/00
Inventor 郑晓杰张树堂
Owner 张树堂
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