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Palladium magnesium alloy for magnesium-contained highly-conductive high strength electric contact material

An electrical contact material and high electrical conductivity technology, applied in the field of alloys, can solve the problems that the anti-combustion performance cannot meet the requirements, etc., and achieve the effect of solving the problem of large hot cracking tendency, good plasticity and viscosity, and low liquid-solid solidification temperature range.

Inactive Publication Date: 2018-03-13
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 being able to meet the requirements only with the anti-combustion performance during smelting. More importantly, the final palladium-magnesium alloy product must also have satisfactory mechanical strength, at least reaching the level commonly used Mechanical properties and electrical conductivity levels of palladium-magnesium alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A Pd-Mg-Hf palladium-magnesium alloy for 1600-degree smelting magnesium-containing high-conductivity and high-strength electrical contact materials. In terms of weight percentage, the chemical composition of the alloy is: Mg:1.9wt.%, Hf:0.6wt.%, Re:0.8wt.%, Sn:1.3wt.%, Al:1.2wt.%, Co:0.4wt .%, Ag: 0.6wt.%, Si: 0.3wt.%, Ge: 0.1wt.%, B: 0.3wt.%, and the balance is palladium. 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 1600 degrees to form an alloy solution, and use the electromagnetic effect to fully stir for about 10 minutes. The alloy liquid is kept at 1600 degrees for 10 minutes and cast into the same level equipment as the hot top for semi-continuous casting, and the ingot moving speed is 8m / min. The ingot was deformed at room temperature with a rolling reduction of 9% per pass. Every 3 passes of rolling requires an i...

Embodiment 2

[0019]A Pd-Mg-Hf palladium-magnesium alloy for smelting magnesium-containing high-conductivity and high-strength electrical contact materials at 1620 degrees. By weight percentage, the chemical composition of the alloy is: Mg: 2.5wt.%, Hf: 0.4wt.%, Re: 0.8wt.%, Sn: 1.2wt.%, Al: 1.2wt.%, Co: 0.4wt% .%, Ag: 0.6wt.%, Si: 0.2wt.%, Ge: 0.1wt.%, B: 0.3wt.%, and the balance is palladium. The preparation method of the alloy: the above-mentioned raw materials are added into an induction furnace in an atmospheric environment, and a silicon carbide crucible is used. Induction heating to 1620 degrees to form an alloy solution, and fully stirring for about 10 minutes using the electromagnetic effect. The alloy liquid was kept at 1620 degrees for 10 minutes and poured into the hot top level equipment for semi-continuous casting, and the moving speed of the ingot was 10m / min. The ingot is deformed at room temperature, and the rolling reduction per pass is 6%. Every 3 passes of rolling req...

Embodiment 3

[0021] A Pd-Mg-Hf palladium-magnesium alloy for smelting magnesium-containing high-conductivity and high-strength electrical contact materials at 1650 degrees. By weight percentage, the chemical composition of the alloy is: Mg: 2.6wt.%, Hf: 0.5wt.%, Re: 1.2wt.%, Sn: 1.3wt.%, Al: 1.2wt.%, Co: 0.4wt% .%, Ag: 0.6wt.%, Si: 0.2wt.%, Ge: 0.1wt.%, B: 0.2wt.%, and the balance is palladium. The preparation method of the alloy: the above-mentioned raw materials are added into an induction furnace in an atmospheric environment, and a silicon carbide crucible is used. Induction heating to 1650 degrees to form an alloy solution, and fully stirring for about 10 minutes by electromagnetic effect. The alloy liquid was kept at 1650 degrees for 10 minutes and poured into the hot top level equipment for semi-continuous casting, and the moving speed of the ingot was 9m / min. The ingot is deformed at room temperature, and the rolling reduction per pass is 10%. Every 3 passes of rolling requires ...

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Abstract

The invention discloses a palladium-magnesium alloy for a magnesium-containing high-conductivity and high-strength electrical contact material. In terms of weight percentage, the chemical composition of the alloy is: Mg: 1.5‑3.0wt.%, Hf: 0.2‑0.8wt.%, Re: 0.2‑1.4wt.%, Sn: 1.2‑1.4wt.%, Al: 1.0‑ 1.5wt.%, Co: 0.4‑0.5wt.%, Ag: 0.2‑0.8wt.%, Si: 0.2‑0.4wt.%, Ge: 0.1‑0.2wt.%, B: 0.2‑0.5wt.%, The balance is palladium. Compared with the traditional electrical contact palladium alloy, the material has excellent mechanical properties and high electrical conductivity.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a palladium-magnesium alloy. Background technique [0002] Electrical contact materials are one of the important materials in the process of current transmission and conversion. Electrical contact materials are key materials for the preparation of electric power, electrical circuit on-off control and load current electrical appliances (such as switches, relays, starters, instruments, etc.). Mainly used for breakable current-carrying connection contacts between two conductors. The performance of these electrical contact elements directly affects the reliability, stability, precision and service life of electrical conversion devices and the entire instrumentation. Therefore, the development of electronic instruments and meters towards high precision and miniaturization puts forward higher requirements for the performance of electrical contact elements: excellent electrical conduct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C5/04C22C1/02C22F1/14C22F1/02
CPCC22C5/04C22C1/02C22F1/02C22F1/14
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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