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A processing method of silver tin oxide electrical contact material containing indium stannate

An electrical contact material, silver tin oxide technology, applied in the manufacture of circuits, electrical components, cables/conductors, etc., can solve problems such as temperature rise, large contact resistance, affecting electrical performance of electrical appliances, etc. Reduce resistivity and temperature rise, improve the effect of uneven distribution of additives

Active Publication Date: 2016-08-17
桂林金格电工电子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silver tin oxide contact material has excellent wear resistance, welding resistance and arc erosion resistance, but it has disadvantages such as large contact resistance and temperature rise, which seriously affect the electrical performance of electrical appliances
At present, there is no relevant report on silver tin oxide electrical contact materials doped with indium stannate

Method used

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  • A processing method of silver tin oxide electrical contact material containing indium stannate
  • A processing method of silver tin oxide electrical contact material containing indium stannate
  • A processing method of silver tin oxide electrical contact material containing indium stannate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) First prepare 10kgAg-SnO according to 2 (11.5)-In 4 sn 3 o 12 (0.5) Calculate the amount of tin oxide powder, indium nitrate and silver nitrate required for material ratio calculation. Weigh 1.172 kg of tin oxide powder (average particle size is 2 to 3 μm), 0.06 kg of indium nitrate and 13.852 kg of silver nitrate, and then calculate the amount according to indium nitrate Weigh 0.026 kg of sodium hydroxide A according to the amount of silver nitrate, and weigh 3.585 kg of sodium hydroxide B according to the amount of silver nitrate, and set aside; dissolve silver nitrate in water to make a 30w / w% silver nitrate solution, and dissolve indium nitrate in water to prepare into a 30w / w% indium nitrate solution; dissolving sodium hydroxide A in water to form a 20w / w% solution to obtain a sodium hydroxide A solution; dissolving sodium hydroxide B in water to form a 20w / w% solution to obtain Sodium hydroxide B solution; The tin oxide powder that weighs is divided into two...

Embodiment 2

[0040] 1) First prepare 10kg Ag-SnO according to 2 (8)-In 4 sn 3 o 12 (4) Calculate the amount of tin oxide powder, indium nitrate and silver nitrate required for material ratio calculation. Weigh 0.98 kg of tin oxide powder (average particle size is 2 to 3 μm), 0.477 kg of indium nitrate and 13.852 kg of silver nitrate, and then calculate according to the amount of indium nitrate Weigh 0.209 kg of sodium hydroxide A according to the amount of silver nitrate, and weigh 3.585 kg of sodium hydroxide B according to the amount of silver nitrate, and set aside; dissolve silver nitrate in water to make a 40w / w% silver nitrate solution, and dissolve indium nitrate in water to prepare into a 20w / w% indium nitrate solution; dissolving sodium hydroxide A in water to form a 10w / w% solution to obtain a sodium hydroxide A solution; dissolving sodium hydroxide B in water to form a 30w / w% solution to obtain Sodium hydroxide B solution; The tin oxide powder that weighs is divided into two ...

Embodiment 3

[0049] 1) First prepare 10kg Ag-SnO according to 2 (15)-In 4 sn 3 o 12 (2) Calculate the amount of tin oxide powder, indium nitrate and silver nitrate required for material ratio calculation. Weigh 1.59 kg of tin oxide powder (average particle size is 2 to 3 μm), 0.238 kg of indium nitrate and 13.065 kg of silver nitrate, and then calculate according to the amount of indium nitrate Weigh 0.105 kg of sodium hydroxide A according to the amount of silver nitrate, and weigh 3.382 kg of sodium hydroxide B according to the amount of silver nitrate, and set aside; dissolve silver nitrate in water to make a 30w / w% silver nitrate solution, and dissolve indium nitrate in water to prepare into a 25w / w% indium nitrate solution; dissolving sodium hydroxide A in water to form a 20w / w% solution to obtain a sodium hydroxide A solution; dissolving sodium hydroxide B in water to form a 25w / w% solution to obtain Sodium hydroxide B solution; The tin oxide powder that weighs is divided into two...

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Abstract

The invention discloses a processing method of a silver tin oxide electrical contact material containing indium tin oxide. The processing method specifically comprises the steps that the amount of needed putty powder, the amount of needed indium nitrate and the amount of silver nitrate are calculated according to the material ratio of a to-be-prepared silver tin oxide electrical contact containing the indium tin oxide, and the amount of sodium hydroxide A is calculated according to the amount of indium nitrate; the amount of sodium hydroxide B is calculated according to the amount of silver nitrate; the materials are weighted for use later; the weighted materials are prepared into solutions, the putty powder is divided into two parts including putty powder A and putty powder B; the sodium hydroxide A and the indium nitrate suspension liquid containing the putty powder A are reacted to obtain indium hydroxide and tin oxide composite powder, the composite powder is subjected to calcining and ball-milling to obtain indium tin oxide powder, the indium tin oxide powder is added to suspension liquid formed by the putty powder B and the silver nitrate solution to conduct a reaction with the sodium hydroxide B to obtain silver oxide, tin oxide and indium tin oxide composite powder; the composite powder is washed, dried and roasted and enters the forming, sintering and extruding procedures, and then the silver tin oxide electrical contact material containing the indium tin oxide is obtained.

Description

technical field [0001] The invention relates to a processing method of a silver tin oxide electric contact material containing indium stannate, belonging to the field of metal matrix composite materials. Background technique [0002] In recent years, silver tin oxide contacts have been widely used in various low-voltage electrical appliances as the best substitute for toxic silver cadmium oxide contacts. Silver tin oxide contact material has excellent wear resistance, welding resistance and arc erosion resistance, but it has disadvantages such as large contact resistance and temperature rise, which seriously affect the electrical performance of electrical appliances. [0003] Previous studies have found that silver tin oxide electrical contact materials added with one or more oxides of bismuth oxide, copper oxide and indium oxide not only have good wear resistance, welding resistance and arc erosion resistance , which greatly improves the electrical performance of electrica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00
Inventor 张天锦叶凡王振宇陈光明李耀林
Owner 桂林金格电工电子材料科技有限公司
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