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High thermal conductivity and damping silver-lithium electric contact alloy

A high thermal conductivity, alloy technology, applied in the field of alloys, can solve the problems that cannot meet the requirements, and achieve the effect of improving lithium yield, good plasticity and viscosity, and good flame retardant effect

Inactive Publication Date: 2018-03-06
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a structural material, it is far from meeting the requirements to only have flame retardancy during smelting and prevent lithium volatilization during smelting. More importantly, the final silver-lithium alloy product must also have satisfactory mechanical properties. performance and electrical conductivity, at least at the level of mechanical properties of commonly used silver alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A 720-degree melting high thermal conductivity and damping Ag-Li-Sn silver lithium electrical contact alloy. In terms of weight percentage, the chemical composition of the alloy is: Li: 2.5wt.%, Sn: 1.2wt.%, Zn: 2.8wt.%, Ba: 0.8wt.%, Sr: 0.9wt.%, Pd: 0.3wt .%, Zr: 0.2wt.%, Th: 0.1wt.%, Ce: 0.6wt.%, B: 0.9wt.%, the balance is silver. The preparation method of the alloy: add the above-mentioned raw materials into the induction furnace under the atmospheric environment, and use a silicon carbide crucible. Induction heating to 720 degrees to form an alloy solution, and use the electromagnetic effect to fully stir for about 10 minutes. The alloy liquid is kept at 720 degrees for 10 minutes and cast into the equipment at the same level as the hot top for semi-continuous casting, and the ingot moving speed is 8m / min. The ingots were deformed at room temperature with a rolling reduction of 8% in each pass. Every 3 passes of rolling requires an intermediate heat treatment to ...

Embodiment 2

[0019]A 750-degree melting high thermal conductivity and damping Ag-Li-Sn silver lithium electrical contact alloy. In terms of weight percentage, the chemical composition of the alloy is: Li: 2.1wt.%, Sn: 1.2wt.%, Zn: 2.3wt.%, Ba: 0.9wt.%, Sr: 1.0wt.%, Pd: 0.3wt .%, Zr: 0.2wt.%, Th: 0.1wt.%, Ce: 0.6wt.%, B: 0.9wt.%, the balance is silver. The preparation method of the alloy: add the above-mentioned raw materials into the induction furnace under the atmospheric environment, and use a silicon carbide crucible. Induction heating to 750 degrees to form an alloy solution, and use the electromagnetic effect to fully stir for about 10 minutes. The alloy liquid is kept at 750 degrees for 10 minutes and cast into the equipment at the same level as the hot top for semi-continuous casting, and the ingot moving speed is 9m / min. The ingot was deformed at room temperature with a rolling reduction of 6% in each pass. Every 3 passes of rolling requires an intermediate heat treatment to eli...

Embodiment 3

[0021] A 760-degree melting high thermal conductivity and damping Ag-Li-Sn silver lithium electrical contact alloy. In terms of weight percentage, the chemical composition of the alloy is: Li: 1.8wt.%, Sn: 1.3wt.%, Zn3.2wt.%, Ba: 0.7wt.%, Sr: 0.9wt.%, Pd: 0.2wt. %, Zr: 0.2wt.%, Th: 0.1wt.%, Ce: 0.6wt.%, B: 0.8wt.%, the balance is silver. The preparation method of the alloy: add the above-mentioned raw materials into the induction furnace under the atmospheric environment, and use a silicon carbide crucible. Induction heating to 760 degrees to form an alloy solution, and use the electromagnetic effect to fully stir for about 10 minutes. The alloy liquid is kept at 760 degrees for 10 minutes and cast into the equipment at the same level as the hot top for semi-continuous casting, and the ingot moving speed is 9m / min. The ingots were deformed at room temperature with a rolling reduction of 8% in each pass. Every 3 passes of rolling requires an intermediate heat treatment to el...

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Abstract

The invention discloses an Ag-Li-Sn silver lithium electrical contact alloy with high thermal conductivity and damping and a processing technology thereof. By weight percentage, the chemical composition of the alloy is: Li:0.5‑3.0wt.%, Sn:1.0‑1.5wt.%, Zn:2.0‑4.0wt.%, Ba:0.5‑1.5wt.%, Sr:0.5‑ 1.2wt.%, Pd: 0.2‑0.4wt.%, Zr: 0.2‑0.3wt.%, Th: 0.1‑0.2wt.%, Ce: 0.5‑0.8wt.%, B: 0.5‑1.0wt.%, The balance is silver. Compared with silver alloys used in traditional electrical contact materials, this material has excellent mechanical properties, high electrical conductivity and high damping coefficient.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a silver-lithium alloy. Background technique [0002] Silver has good electrical and thermal conductivity, adding other alloying elements to silver can improve the properties of silver. There are many types of silver alloys, the most important of which are: silver-copper alloy, silver-magnesium alloy, silver-nickel alloy, silver-tungsten alloy, silver-iron alloy and silver-cerium alloy. Products made of silver alloys are used in the largest amount and have a wide range of applications. These silver alloys have a series of characteristics: (1) Excellent physical and chemical properties. Silver alloys have good electrical and thermal conductivity. (2) Good processing performance. Good plasticity, easy cold and hot forming. Cast silver alloys have good casting properties. (3) Has some special mechanical properties. Such as excellent anti-friction and wear resistance, high elas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C5/06C22C1/02C22F1/14
CPCC22C5/06C22C1/02C22F1/14
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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