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A kind of preparation method and preparation device of au-x nano alloy powder

A technology of powder preparation and nano-alloy, which is applied in nanotechnology, metal processing equipment, transportation and packaging, etc., can solve the problems of high welding material price and complicated process, reduce composition segregation, reduce cost, and facilitate large-scale preparation Effect

Active Publication Date: 2021-03-23
SHANWEI SOURCE ADVANCED MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current preparation of nano-powder welding materials is expensive and the process is complicated, so it is urgent to invent a low-cost, rapid and large-scale preparation of gold-based nano-powder

Method used

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  • A kind of preparation method and preparation device of au-x nano alloy powder
  • A kind of preparation method and preparation device of au-x nano alloy powder

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Alloy vacuum smelting: 1000 g and 200 g of Au and Sn metals with a purity of 99.99% are thinned to a thickness of millimeters by rollers, cut into pieces with scissors, and then mixed and placed evenly into the crucible of the vacuum melting furnace, and then evacuated to make the vacuum degree 10 -3 MPa, to prevent its oxidation, then start to heat up, the heating rate is 3°C / min, after the temperature rises to 550°C, the heating rate is 3°C / min, the smelting holding time is 1 h, after the holding, the alloy is naturally cooled with the furnace, The irregular shape of Au-Sn alloy was obtained. Due to its high brittleness, the alloy block was gently broken with a hammer to obtain a small block of Au-Sn alloy with a size less than about 1 cm.

[0022] (2) Crushing under inert atmosphere protection: put the small Au-Sn alloy with a size less than about 1 cm obtained in step 1 into the material inlet (20) of the crushing device, and adjust the top ceramic left pressure...

Embodiment 2

[0026] (1) Alloy vacuum smelting: 1200g, 150g and 150g of Au, Ge and Si with a purity of 99.99% are thinned to a thickness of millimeters by a roller press, and then cut into pieces with scissors, and then They are mixed evenly and placed in the crucible of the vacuum melting furnace, and then vacuumed to a degree of 10 -4 MPa, to prevent its oxidation, then start to heat up at a rate of 4°C / min. After the temperature rises to 610°C, the smelting holding time is 1.5 h. -Si alloy, due to its high brittleness, use a hammer to gently break the alloy block to obtain a small block of Au-Ge-Si alloy with a size less than about 1 cm.

[0027] (2) Crushing under inert atmosphere protection: Put the small Au-Ge-Si alloys with a size less than about 1 cm obtained in step 1 into the material inlet (20) of the crushing device, and adjust the top ceramic left pressure roller of the crushing device ( The pressure roller distance between 40) and the top ceramic right pressure roller (41) is...

Embodiment 3

[0031] A crushing device for Au-X nano-alloy powder, comprising a frame body (1), a power device (2) mounted on the frame body, a working chamber (3) and a crushing mechanism (4) disposed in the working chamber. The crushing mechanism (4) set in the working chamber (3), the crushing mechanism (4) includes the top ceramic pressure roller composed of the top ceramic left pressure roller (40) and the top ceramic right pressure roller (41) side by side group, and the bottom ceramic pressure roller group consisting of the bottom ceramic left pressure roller (42) and the bottom ceramic right pressure roller (43) arranged side by side under the top ceramic pressure roller group, the top ceramic left pressure roller The pressure roller distance between (40) and the top ceramic right pressure roller (41) is adjustable, and the pressure roller distance between the bottom ceramic left pressure roller (42) and the bottom ceramic right pressure roller (43) is adjustable; A material inlet (...

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Abstract

A method for preparing Au-X nano-alloy powder and its preparation device. The invention includes three processes of alloy vacuum smelting, inert atmosphere protection mechanical crushing and wet high-energy ball milling: the alloy vacuum smelting can ensure the uniformity of the composition of the material and form a common crystal structure to reduce component segregation; mechanical crushing under the protection of inert atmosphere breaks the bulk material after alloy smelting into millimeter size; finally, the alloy powder particles after wet high energy ball milling are nanometer level. The Au-X (Sn, Ge, Si) nano-alloy powder prepared by the invention can be effectively used in welding products in the field of optical / microelectronic packaging, and its product reliability is higher. In addition, the process method has low requirements on equipment, is conducive to realizing large-scale industrialization, and its cost can be greatly reduced.

Description

technical field [0001] The invention relates to the field of welding materials in the field of optics / microelectronics, in particular to a preparation process of Au-X (Sn, Ge, Si, etc.) nano-alloy powder. Background technique [0002] Optical / microelectronic products, including chip, frame and shell package welding, have higher and higher requirements for welding materials, especially for national defense and military industries, which have special use environments for products, including working under harsh conditions such as high temperature, low temperature, and high humidity . In addition, they require a longer service life for products and extremely high reliability requirements. Precious metal solders, especially Au-based solder materials, have the advantages of corrosion resistance, high welding strength, fatigue resistance, and moderate soldering temperature. [0003] At present, solder preforms are mostly used, but for some high-power heating devices and some speci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/04B22F1/00B82Y40/00B02C4/02B02C4/32B02C17/10
CPCB82Y40/00B02C4/02B02C4/32B02C17/10B22F9/04B22F2009/043B22F1/054
Inventor 黄亮林尧伟
Owner SHANWEI SOURCE ADVANCED MATERIALS CORP
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