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A kind of preparation method of silver tin oxide indium oxide contact material

A silver tin oxide, contact material technology, applied in electrical components, electrical switches, circuits, etc., can solve the problems of low starting voltage, non-conduction failure of LED lamps, etc., to improve electrical conductivity, low body resistance, and reduce oxidation. energy barrier effect

Active Publication Date: 2018-09-21
ZHEJIANG FUDA ALLOY MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: Household small power relays were previously required to be used in a fluorescent lamp environment, but with the development of the times, they gradually need to meet higher life requirements under the load of LED lamps. Conduction failure and other defects

Method used

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  • A kind of preparation method of silver tin oxide indium oxide contact material
  • A kind of preparation method of silver tin oxide indium oxide contact material
  • A kind of preparation method of silver tin oxide indium oxide contact material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The ingredients were dosed at the levels specified in Table 1 below. After alloying tin, indium, cerium, germanium and lanthanum in an intermediate frequency furnace, it is atomized into tin-indium alloy powder by 30MPa hydraulic pressure, passed through a 100-mesh sieve, and the under-sieve is reduced for 1 hour at 300°C in a hydrogen atmosphere. Oxidize tin-indium alloy powder at 450°C for 2 hours, then oxidize at 600°C-750°C for 3-6 hours to obtain tin oxide indium oxide composite powder, crush tin oxide indium oxide composite powder through a crusher, and pass through 100 mesh Sieve, the undersieve flows into the next process for use. Mix tin oxide indium oxide composite powder with 200 mesh-300 mesh silver powder, lithium carbonate, copper oxide, and bismuth oxide with a Fibonacci particle diameter of ≤1.5 microns in a mechanical powder mixing machine for 2-3 hours. The prepared mixed powder is pressed in an isostatic press at 180Ma for 30s to obtain an ingot with...

Embodiment 2

[0039] The method of Example 1 was repeated according to the content of each component specified in Table 1 below.

Embodiment 3

[0041] The method of Example 1 was repeated according to the content of each component specified in Table 1 below.

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Abstract

The invention specifically relates to a method for preparing a silver tin oxide indium oxide contact material, comprising the following steps: (1) batching; (2) atomizing tin, indium, and germanium with water to prepare tin-indium alloy powder; (3) The tin-indium alloy powder is oxidized into tin oxide indium oxide composite powder under a certain oxygen pressure and temperature, and the oxidized powder is granulated; (4) The prepared composite powder is mechanically mixed with 200‑300 mesh silver powder , mixed evenly; (5) The mixed silver tin oxide indium oxide composite powder is isostatically pressed, sintered, extruded, and drawn to the required finished product specification wire. The silver tin oxide material prepared by the method has the advantages of low bulk resistance, low hardness, good processability, good welding resistance and the like.

Description

technical field [0001] The invention belongs to the field of metal matrix composite materials, and in particular relates to a preparation method of a silver tin oxide indium oxide contact material. Background technique [0002] Silver tin oxide electrical contact materials are mainly used in electrical switches such as relays, contactors, motors, switches, etc. With the continuous improvement of the function and use environment of electrical equipment, the requirements for electrical switchgear are becoming more and more stringent. Some relays may be used in high-temperature steam, and the use conditions of their relays must reach more than 100,000 in very sealed high-temperature conditions. Some relays and contactors are no longer simple resistive loads, but also complex loads such as inductive and capacitive loads. The rated current is large, and electrical equipment also needs environmental protection and low energy consumption. [0003] In order to ensure the requiremen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H11/04B22F1/00
CPCB22F1/0003H01H11/048
Inventor 颜小芳柏小平周龙李杰张秀芳杨昌麟林万焕
Owner ZHEJIANG FUDA ALLOY MATERIALS TECH CO LTD