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Magnesium-containing high-conductive and high-temperature-resistant palladium magnesium alloy used for electrical contact material

An electrical contact material and high electrical conductivity technology, applied in the field of alloys, can solve the problems such as the inability to meet the requirements of combustion resistance, and achieve the effect of solving the problem of large hot cracking tendency, low liquid-solid solidification temperature range, and reducing the amount of use.

Inactive Publication Date: 2018-03-23
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-Zr palladium-magnesium alloy for 1600-degree smelting magnesium-containing high-conductivity and high-temperature-resistant electrical contact materials. By weight percentage, the chemical composition of the alloy is: Mg: 1.8wt.%, Zr: 0.6wt.%, W: 0.4wt.%, Ti: 1.2wt.%, Sb: 2.4wt.%, Ni: 0.3wt %, Sn: 0.2wt.%, Bi: 0.2wt.%, Ga: 0.1wt.%, B: 0.4wt.%, 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. Inductively heated to 1600 degrees to form an alloy solution, and fully stirred by electromagnetic effect for about 10 minutes. The alloy liquid was kept at 1600 degrees for 10 minutes and poured into the hot top level equipment for semi-continuous casting, and the moving speed of the ingot was 12m / min. The ingots were deformed at room temperature with a rolling reduction of 9% per pass. Every 3 passes of rolling re...

Embodiment 2

[0019]A Pd-Mg-Zr palladium-magnesium alloy for smelting magnesium-containing high-conductivity and high-temperature-resistant electrical contact materials at 1620 degrees. By weight percentage, the chemical composition of the alloy is: Mg: 1.6wt.%, Zr: 0.8wt.%, W: 0.4wt.%, Ti: 1.2wt.%, Sb: 2.3wt.%, Ni: 0.3wt %, Sn: 0.4wt.%, Bi: 0.2wt.%, Ga: 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 12m / min. The ingot is deformed at room temperature, and the rolling reduction per pass is 6%. Every 3 passes of r...

Embodiment 3

[0021] A Pd-Mg-Zr palladium-magnesium alloy for smelting magnesium-containing high-conductivity and high-temperature-resistant electrical contact materials at 1650 degrees. By weight percentage, the chemical composition of the alloy is: Mg: 1.9wt.%, Zr: 0.8wt.%, W: 0.6wt.%, Ti: 1.2wt.%, Sb: 2.2wt.%, Ni: 0.3wt %, Sn: 0.3 wt. %, Bi: 0.2 wt. %, Ga: 0.1 wt. %, B: 0.4 wt. %, 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 14m / min. The ingot is deformed at room temperature, and the rolling reduction per pass is 6%. Every 3 passes of...

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Abstract

The invention discloses a palladium-magnesium alloy for a magnesium-containing high-conductivity and high-temperature-resistant electrical contact material. In terms of weight percentage, the chemical composition of the alloy is: Mg: 1.0‑2.5wt.%, Zr: 0.5‑1.5wt.%, W: 0.2‑1.0wt.%, Ti: 1.0‑1.4wt.%, Sb: 2.0‑ 2.5wt.%, Ni: 0.2‑0.5wt.%, Sn: 0.2‑0.6wt.%, Bi: 0.2‑0.3wt.%, Ga: 0.1‑0.2wt.%, B: 0.2‑0.6wt.%, The balance is palladium. Compared with the traditional electrical contact palladium alloy, the material has excellent mechanical properties, high electrical conductivity and excellent high temperature performance.

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 the key materials for the preparation of on-off control and load current electrical appliances (such as switches, relays, starters and instruments, etc.) in electric power and electrical circuits. Mainly used for disconnectable current-carrying connection contacts between two conductors. The performance of these electrical contact elements directly affects the reliability, stability, accuracy and service life of the electrical conversion device 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: excelle...

Claims

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Application Information

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