Additive manufacturing method and product of high-entropy alloy using noble metal material

A high-entropy alloy and additive manufacturing technology, applied in the field of additive manufacturing of parts with special service conditions in the aerospace field, can solve the problem that the performance of precious metals has not been fully exploited, hinder the development of aerospace technology, and increase aerospace budget costs, etc. problems, to achieve high thermal stability and anti-oxidation ability, improve material utilization, low scrap rate

Inactive Publication Date: 2020-04-10
深圳市翠绿贵金属材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current application of precious metals in the aerospace field generally uses simple materials, or simple precious metal alloy materials, or only uses precious metal powder to spray on the surface of products to improve performance, and traditional processing methods are also used when manufacturing products, so The performance of precious metals has not been fully explored. At the same time, traditional processing methods have serious consumables and low precision, resulting in great waste, increasing the budgetary cost of aerospace, and indirectly hindering the further development of aerospace technology.
[0004] In recent years, multi-principal high-entropy alloys have become one of the research hotspots in the field of material science and technology due to their excellent properties such as high strength, high hardness, and high stability, which cannot be possessed by traditional alloys at the same time. According to literature records, currently high-entropy alloys are commonly used The main elements are Al, Ti, Cr, Fe, Co, Ni, Cu, etc., and sometimes B, Si and other elements are added as supplementary elements. However, there are few reports on the preparation of high-entropy alloys and their related applications using noble metals.

Method used

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  • Additive manufacturing method and product of high-entropy alloy using noble metal material
  • Additive manufacturing method and product of high-entropy alloy using noble metal material
  • Additive manufacturing method and product of high-entropy alloy using noble metal material

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Example 1 Prepare a high temperature resistant component for aerospace, the size is 10X10X5mm

[0022] The first step is to select the material. The basic principal component precious metal materials selected in this embodiment are gold and silver in turn, and the added sub-principal components are copper, titanium and aluminum;

[0023] In the second step, alloy smelting, the gold, silver, copper, titanium, and aluminum of the metal are mixed in a certain proportion (Au 20 Ag 25 Cu 10 Ti 35 al 10 ) into a special crucible or mold of a vacuum furnace, heating and melting, not only extracting a vacuum, so that its vacuum degree is (0.2Pa), the crucible or mold is preferably a detachable or assembled airtight container, filled with helium for protection, Keep it warm until it is completely melted, and then cool it with liquid nitrogen to obtain a massive noble metal high-entropy alloy. The heating temperature is 1800-2000°C, preferably 1900°C, and the holding time is ...

Embodiment 2

[0029] Embodiment 2 uses additive manufacturing technology to collect high-entropy precious metals, and the product is a functional part of a decommissioned spacecraft instrument panel.

[0030] The first step is blank preparation, collecting functional parts of a decommissioned spacecraft instrument panel, made of high-entropy alloys of precious metals, cleaning the surface with ultrasonic waves, and then polishing the surface to remove impurities;

[0031] In the second step, powder making, the processed noble metal high-entropy alloy is melted at high temperature, cooled, and then purged with an inert gas to form a powder with a particle size of 20-50 microns;

[0032] The third step, additive remanufacturing, this process is basically the same as the steps of the embodiment;

[0033] The fourth step, product inspection, this process is basically the same as the steps in the embodiment.

Embodiment 3

[0034] Example 3 uses additive manufacturing technology for thermal spraying to obtain a high temperature resistant surface coating.

[0035] The first step is to use the method of this invention to prepare a new noble metal high-entropy alloy. The basic principal noble metal materials are iridium and platinum in turn, and the added sub-principal components are copper, titanium and aluminum. The mass percentage of each component is: Iridium is 20.50-40.33%, platinum is 20.11-30.23%, copper is 7.75-9.88%, titanium is 5.55-665%, and the rest is aluminum and unavoidable impurities;

[0036] In the second step, the high-entropy alloy prepared in the first step is made into powder, and then the surface of the product is thermally sprayed using additive equipment. The heating temperature is above 4000°C, and the temperature of the flame center is above 10,000°C. According to the specified trajectory, high-temperature melting and deposition of iridium-platinum-copper-titanium-aluminu...

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Abstract

The invention provides an additive manufacturing method and product of a high-entropy alloy using noble metal materials. Noble metal is smelted and synthesized by using a preparation method of the high-entropy alloy, so that the performance of the noble metal is sufficiently improved and improved; meanwhile, the high-entropy alloy synthesized from the noble metal is personalized and manufacturedby using an additive manufacturing technology, so that high-precision and high-performance aerospace relevant parts are obtained; and meanwhile, the additive manufacturing technology can also recyclethe noble metal materials in parts and components after service, so that the cost is reduced.

Description

technical field [0001] The present application relates to the technical field of additive manufacturing of new materials, and in particular to an additive manufacturing method and product of components with special service conditions in the aerospace field. Background technique [0002] Since the moment when human beings stepped into the moon, the remote space is no longer a scene in science fiction for human beings. The range of human activities continues to touch space, and the rapid development of aerospace technology is accompanied by it. Due to the complex environment and harsh working conditions in the aerospace field, the performance requirements for the materials of parts are very strict. Usually, materials are required to have high temperature corrosion resistance, high stability, high precision and long service life, so the stability is relatively high. Good precious metals often become indispensable alloy materials for the manufacture of special parts in the aeros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/02C22C1/02C22C1/04C23C4/08B22F3/105B33Y10/00B33Y70/00
CPCC22C30/02C22C1/02C22C1/0466C23C4/08B33Y10/00B33Y70/00B22F10/00B22F10/28Y02P10/25B22F10/20
Inventor 周俊
Owner 深圳市翠绿贵金属材料科技有限公司
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