Oxidization-resisting strontium-containing aluminum alloy with working temperature of 300 to 400 DEG C for storing energy

A technology of working temperature and oxidation resistance, which is applied in the field of alloys, can solve serious problems, rapid changes in alloy composition, and reduction of thermal properties of alloys, and achieve excellent corrosion resistance, good chemical compatibility, and reduced melting latent heat.

Inactive Publication Date: 2019-01-18
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when active elements are added to the heat storage alloy, the burning loss is serious when used at high temperature
Not only the composition of the alloy changes rapidly, but also the thermal properties of the alloy are greatly reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] An oxidation-resistant strontium-containing aluminum alloy for energy storage at a working temperature of 300-400 degrees. In terms of weight percentage, the composition of the alloy is Zn: 18.0wt.%, Sr: 0.8wt.%, Ge: 4.0wt.%, In: 0.4wt.%, S: 0.1wt.%, Co: 1.4wt.% , and the balance is aluminum. The above-mentioned oxidation-resistant strontium-containing aluminum alloy for energy storage at a working temperature of 300-400 degrees includes the following smelting steps (under protective conditions): melting the above-mentioned raw materials in a crucible resistance furnace, wherein the active elements are in the form of master alloys join in. In the smelting process, graphite crucible is used, carnallite is used as covering agent, and siderstone is used as refining agent. The crucible is heated to 720-800 degrees to form an alloy melt, and the electromagnetic stirring effect is used to fully stir for about 15 minutes. The alloy melt is kept at 700°C for 15 minutes and t...

Embodiment 2

[0020]An oxidation-resistant strontium-containing aluminum alloy for energy storage at a working temperature of 300-400 degrees. In terms of weight percentage, the composition of the alloy is Zn: 19.0wt.%, Sr: 1.2wt.%, Ge: 5.0wt.%, In: 0.6wt.%, S: 0.2wt.%, Co: 1.6wt.% , and the balance is aluminum. The above-mentioned oxidation-resistant strontium-containing aluminum alloy for energy storage at a working temperature of 300-400 degrees includes the following smelting steps (under protective conditions): melting the above-mentioned raw materials in a crucible resistance furnace, wherein the active elements are in the form of master alloys join in. In the smelting process, graphite crucible is used, carnallite is used as covering agent, and siderstone is used as refining agent. The crucible is heated to 720-800 degrees to form an alloy melt, and the electromagnetic stirring effect is used to fully stir for about 15 minutes. The alloy melt is kept at 700°C for 15 minutes and th...

Embodiment 3

[0023] An oxidation-resistant strontium-containing aluminum alloy for energy storage at a working temperature of 300-400 degrees. In terms of weight percentage, the composition of the alloy is Zn: 18.5wt.%, Sr: 0.9wt.%, Ge: 4.2wt.%, In: 0.5wt.%, S: 0.1wt.%, Co: 1.5wt.% , and the balance is aluminum. The above-mentioned oxidation-resistant strontium-containing aluminum alloy for energy storage at a working temperature of 300-400 degrees includes the following smelting steps (under protective conditions): melting the above-mentioned raw materials in a crucible resistance furnace, wherein the active elements are in the form of master alloys join in. In the smelting process, graphite crucible is used, carnallite is used as covering agent, and siderstone is used as refining agent. The crucible is heated to 720-800 degrees to form an alloy melt, and the electromagnetic stirring effect is used to fully stir for about 15 minutes. The alloy melt is kept at 700°C for 15 minutes and t...

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Abstract

The invention discloses an oxidization-resisting strontium-containing aluminum alloy with working temperature of 300 to 400 DEG C for storing energy. The alloy is prepared from the following components in percentage by weight: 18.0 to 19.0 weight percent of Zn, 0.8 to 1.2 weight percent of Sr, 4.0 to 5.0 weight percent of Ge, 0.4 to 0.6 weight percent of In, 0.1 to 0.2 weight percent of S, 1.4 to1.6 weight percent of Co and the balance of aluminum. The material provided by the invention provides a strontium-containing multi-element near-eutectic alloy solution for the field of energy storageof alloys; an alloy melt has excellent oxidization-resisting performance, thermal cycling performance and thermophysical performance. The current situation that the related performance of current Al-Zn binary eutectic alloys is not enough at present can be effectively overcome, and extremely great market value can be obtained while industrial problems in the field of heat storage are solved.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to an aluminum alloy. Background technique [0002] Energy is the material basis of human activities, so the development of human society is inseparable from high-quality energy and its use. In today's world, the development of energy is a topic of common concern throughout the world, and it is also a major issue that my country's social and economic development needs to face. Energy exists in various forms, such as mechanical energy, sound energy, chemical energy, electromagnetic energy, light energy, heat energy and nuclear energy. But most of the energy needs to be converted and utilized in the form of heat energy. The use of heat storage technology can alleviate the contradiction between thermal energy supply and demand in terms of time, intensity and space, and is an important means of optimizing the operation of thermal energy systems. Heat storage mainly includes sensible h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C1/03
CPCC22C21/10C22C1/026C22C1/03
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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