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

A technology of adding elements and oxides, applied in contacts, circuits, electrical switches, etc., can solve the problems of low bonding strength, waste of silver resources, poor surface activity, etc., to improve erosion performance, good economic benefits and social Benefit, effect of enhanced metal transfer resistance

Inactive Publication Date: 2014-04-09
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-copper-based cadmium oxide electrical contact material with a silver content of 35%±1% and its preparation method:

[0044] (1) The mass ratio of the electrical contact material in this example is:

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

[0046] (2) The mass ratio of the elemental components of the electrical contact material in this example is:

[0047] a. Silver cadmium alloy: silver 62.11%, rare earth aluminum alloy 3.1%, cadmium balance. (The mass percentage of silver cadmium oxide alloy after oxidation is: silver 58.82%, aluminum oxide and rare earth oxide 3.53%, cadmium oxide balance).

[0048] b. Conductive ceramics (Ti3SiC2) 3%.

[0049] c. Lanthanum-nickel alloy 1%.

[0050] d. Silver-copper alloy: silver 24.19%, rare earth copper alloy 4.84%, zirconium-yttrium alloy 3.23%, copper balance.

[0051] (3) The preparation method of the electrical contact material in th...

Embodiment 2

[0062] Silver-copper-based zinc oxide electrical contact material with silver content of 40%±1% and its preparation method:

[0063] (1) The mass ratio of the electrical contact material in this example is:

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

[0065] (2) The mass ratio of the elemental components of the electrical contact material in this example is:

[0066] a. Silver-zinc alloy: silver 70.45%, rare earth aluminum alloy 3.29%, zinc balance. (The mass percentage of silver-zinc oxide alloy after oxidation is: silver 58.82%, aluminum oxide and rare earth oxide 3.53%, zinc oxide balance).

[0067] b. Conductive ceramics (Ti 3 SiC 2 )3%.

[0068] c. Lanthanum-nickel alloy 1%.

[0069] d. Silver-copper alloy: silver 26.79%, rare earth copper alloy 5.36%, zirconium-yttrium alloy 3.57%, copper balance.

[0070] (3) The preparation method of the electrical contact material in this example is ...

Embodiment 3

[0074] Silver-copper-based tin oxide electrical contact material with silver content of 45%±1% and its preparation method:

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

[0076] Silver-tin oxide alloy: 42%, conductive ceramics: 3%, lanthanum-nickel alloy: 1%, silver-copper alloy: balance.

[0077] (2) The mass ratio of the elemental components of the electrical contact material in this example is:

[0078] a. The ratio of silver-tin alloy preparation: silver 75.87%, rare earth aluminum alloy 3.37%, molybdenum 0.84, tin balance. (The mass percentage of silver-tin oxide alloy after oxidation is: silver 71.43%, aluminum oxide and rare earth oxide 3.8%, molybdenum oxide 0.95, tin oxide balance).

[0079] b. Conductive ceramics (Ti 3 SiC 2 )3%.

[0080] c. Lanthanum nickel alloy 1%.

[0081] d. The proportion of silver-copper alloy preparation: silver 27.87%, rare earth copper alloy 5.56%, zirconium yttrium alloy 3.7%, copper balance.

[...

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PUM

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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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Patent Type & Authority Patents(China)
IPC IPC(8): H01H1/021H01H11/00
Inventor 张树堂唐艳华郑晓杰
Owner 张树堂
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