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Preparation method of silver tin oxide or silver tin oxide and indium oxide material

A technology of silver tin oxide and tin oxide, which is applied in the field of preparation of silver tin oxide or silver tin oxide indium oxide materials, can solve the problems of limited service life, toxicity, melting point of silver cadmium oxide, low hardness, etc., and achieve high thermal stability , The effect of reducing the size of the contact

Active Publication Date: 2012-08-15
东莞市中一合金科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Most of the traditional contact materials use silver cadmium oxide, which is widely used in medium and large capacity relays, contactors, AC and DC switches and small and medium capacity circuit breakers, but due to the low melting point and hardness of silver cadmium oxide, it cannot be used In large-capacity switch devices, the service life is limited; at the same time, silver cadmium oxide is a heavy metal alloy with certain toxicity, which brings health risks to operators during production and processing

Method used

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  • Preparation method of silver tin oxide or silver tin oxide and indium oxide material

Examples

Experimental program
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Embodiment 1

[0057] A preparation method of silver tin oxide material:

[0058] 1) Preparation of complexes; take silver nitrate and dissolve it in water and pour it into a complexation tank, add high-purity ammonia water until the liquid surface is clarified, form a complex and then add water to dilute; the silver content in the complex after dilution is 0.2 Kg / L;

[0059] 2) Equipped with hydrazine hydrate solution; take the hydrazine hydrate compound and dilute it with water; the concentration is 10%;

[0060] 3) Reaction: Put tin oxide fine powder, hydrazine hydrate solution, and the complex into a container for reaction, wherein the ratio of substances is:

[0061] Tin oxide powder (Kg): hydrazine hydrate solution (L): complex (L) = 0.15: 1: 2;

[0062]4) Filtration; the reacted mixture is filtered using a cloth bag filter; solids are obtained;

[0063] 5) Cleaning; the solid matter is cleaned until the pH of the cleaning solution after cleaning is 7.4;

[0064] 6) Drying: dry th...

Embodiment 2

[0076] 1) Preparation of complexes; take silver nitrate and dissolve it in water and pour it into a complexation tank, add high-purity ammonia water until the liquid surface is clarified, form a complex and then add water to dilute; the silver content in the complex after dilution is 0.21Kg / L;

[0077] 2) Equipped with hydrazine hydrate solution; take the hydrazine hydrate compound and dilute it with water; the concentration is 12%;

[0078] 3) Reaction: Put tin oxide fine powder, hydrazine hydrate solution, and the complex into a container for reaction, wherein the ratio of substances is:

[0079] Tin oxide powder (Kg): hydrazine hydrate solution (L): complex (L) = 0.2:1:2;

[0080] 4) Filtration; the reacted mixture is filtered using a cloth bag filter; solids are obtained;

[0081] 5) Cleaning: Clean the solid matter until the pH of the cleaning solution is 7.3 after cleaning;

[0082] 6) Drying: dry the cleaned solids; dry at 100°C for 1.2 hours in a baking method;

...

Embodiment 3

[0094] 1) Preparation of complexes; dissolving silver nitrate in water and pouring it into a complexation tank, adding high-purity ammonia water until the liquid surface is clarified, forming complexes and then adding water to dilute; the silver content in the complexes after dilution is 0.23Kg / L;

[0095] 2) Equipped with hydrazine hydrate solution; take the hydrazine hydrate compound and dilute it with water; the concentration is 15%;

[0096] 3) Reaction: Put tin oxide fine powder, hydrazine hydrate solution, and the complex into a container for reaction, wherein the ratio of substances is:

[0097] Tin oxide powder (Kg): hydrazine hydrate solution (L): complex (L) = 0.4:1:2;

[0098] 4) Filtration; the reacted mixture is filtered using a cloth bag filter; solids are obtained;

[0099] 5) Cleaning; the solid matter is cleaned until the pH of the cleaning solution after cleaning is 7.2;

[0100] 6) Drying: dry the cleaned solids; dry at 150°C for 2 hours in a baking met...

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Abstract

The invention relates to a preparation method of metal alloy materials, in particular to a preparation method of a silver tin oxide or silver tin oxide and indium oxide material. The preparation method mainly comprises the following steps of: ball-milling and refining; complex preparation; hydrazine hydrate solution preparation; ultrasonic reaction; filtering; cleaning; drying; calcining; ball-milling and refining; sieving; annealing treatment; isostatic pressing treatment; calcining; and extrusion moulding. A silver tin oxide wire which is prepared by the method disclosed in the invention and used as the main substitute for a silver cadmium oxide wire has the comprehensive advantages of no toxicity, high heat stability, fusion welding resistance, reduction of contact size and the like. The product is widely applied to fields such as a household appliance, a lighting switch, a protection switch, a contactor and a power relay.

Description

technical field [0001] The invention relates to a method for preparing a metal alloy material, in particular to a method for preparing a silver tin oxide or silver tin oxide indium oxide material. Background technique [0002] Most of the traditional contact materials use silver cadmium oxide, which is widely used in medium and large capacity relays, contactors, AC and DC switches and small and medium capacity circuit breakers, but due to the low melting point and hardness of silver cadmium oxide, it cannot be used In large-capacity switching devices, the service life is limited; at the same time, silver cadmium oxide is a heavy metal alloy with certain toxicity, which brings health risks to operators during production and processing. Contents of the invention [0003] The object of the present invention is to solve the deficiencies of the prior art and provide a silver tin oxide material or silver tin oxide indium oxide material with good high temperature resistance, high...

Claims

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Application Information

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IPC IPC(8): C04B35/453C04B35/457C04B35/622
Inventor 陈添乾
Owner 东莞市中一合金科技有限公司
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