Sn-Bi alloy material and preparation method and application thereof

An alloy material, sn-bi technology, applied in the direction of additive manufacturing, additive processing, etc., can solve the problems of affecting processing performance, plasticity reduction, and small ductility, so as to improve thermal fatigue strength, improve wettability, and increase ductility sexual effect

Active Publication Date: 2022-07-29
カン州晨光希土新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Bi is inherently brittle, which makes the Sn-Bi alloy show the characteristics of high brittleness and low ductility, which leads to a decrease in the plasticity of the Sn-Bi alloy. In severe cases, brittle failure will occur, which seriously affects the processing performance.

Method used

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  • Sn-Bi alloy material and preparation method and application thereof

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preparation example Construction

[0021] The present invention provides the preparation method of the Sn-Bi alloy material described in the above technical solution, comprising the following steps:

[0022] The Sn-Bi alloy, the Al-Cu-Me alloy and the covering agent are mixed and smelted to obtain an alloy liquid; the ratio of the Sn-Bi alloy and the Al-Cu-Me alloy is the same as that of the Sn-Bi system described in the above technical solution. The composition of the alloy material is the same;

[0023] The alloy liquid was cast to obtain a Sn-Bi-based alloy material.

[0024] In the present invention, the Sn-Bi alloy, the Al-Cu-Me alloy and the covering agent are mixed and smelted to obtain the alloy liquid. In the present invention, the preparation method of the Sn-Bi alloy preferably includes: placing tin and bismuth in a graphite crucible, melting, and cooling to obtain the Sn-Bi alloy. In the present invention, the mass ratio of tin and bismuth is 40:58. In the present invention, the melting temperatu...

Embodiment 1

[0034] Weigh 400 g of metallic tin and 580 g of metallic bismuth, put them into a graphite crucible, place them in a resistance furnace and heat up to 300 ° C to melt, keep warm for 1 hour under the protection of an inert gas argon gas, mechanically stir 3 times during this period, and naturally cool to obtain a Sn-Bi alloy. .

[0035] Weigh 50 g of Al-10wt% La alloy, 1 g of copper powder, and 12 g of 48wt% NaCl-52wt% KCl covering agent, put them into a graphite crucible, put them in a resistance furnace and heat up to 850 ℃ to melt, keep the temperature for 1 hour, and mechanically stir for 3 Second, natural cooling to obtain Al-2wt%Cu-10wt%La alloy.

[0036] Mix 500g of the Sn-Bi alloy, 10g of the Al-2wt%Cu-10wt%La alloy and 100g of the 48wt%NaCl-52wt%KCl covering agent, melt each component at 750℃ for 30min, reduce the temperature to 350℃ and keep warm During 1 hour, mechanical stirring was performed twice, poured into a mold, and cast to obtain a 40wt% Sn-58wt%Bi-0.04wt%C...

Embodiment 2

[0039] Weigh 400 g of metallic tin and 580 g of metallic bismuth, put them into a graphite crucible, place them in a resistance furnace and heat up to 300 ° C to melt, keep warm for 1 hour under the protection of an inert gas argon gas, mechanically stir 3 times during this period, and naturally cool to obtain a Sn-Bi alloy. .

[0040] Weigh 50 g of Al-10wt% Ce alloy, 1 g of copper powder, and 12 g of 48wt% NaCl-52wt% KCl covering agent, put them into a graphite crucible, place them in a resistance furnace and heat up to 850 ℃ to melt, keep the temperature for 1 hour, and mechanically stir for 3 Second, natural cooling to obtain Al-2wt%Cu-10wt%Ce alloy.

[0041] Mix 500g of the Sn-Bi alloy, 10g of the Al-2wt%Cu-10wt%Ce alloy and 100g of a 48wt%NaCl-52wt%KCl covering agent, melt each component at 750°C for 30min, and reduce the temperature to 350°C for heat preservation During 1 hour, mechanical stirring was performed twice, poured into a mold, and cast to obtain a 40wt% Sn-58...

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Abstract

The invention provides a Sn-Bi alloy material and a preparation method and application thereof, and relates to the technical field of alloy materials. The Sn-Bi alloy material provided by the invention comprises the following components in percentage by mass: 40% of Sn, 58% of Bi, 0.04% of Cu, 1.76% of Al and 0.2% of Me, and Me is one or more of La, Ce and Sr. By adding Cu, Al and Me into the Sn-Bi alloy, coarsening and brittleness of Bi can be relieved, and the alloy performance is improved; a proper amount of Al can improve the alloy strength of the solder, improve the plasticity of the solder and improve the thermal fatigue strength; a proper amount of La, Ce and Sr can improve the physical and chemical properties of the alloy, improve the room-temperature and high-temperature mechanical properties of the alloy, increase the ductility, improve the wettability and improve the impact strength, and can meet the requirements of a low-melting-point alloy material for 3D printing.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a Sn-Bi alloy material and a preparation method and application thereof. Background technique [0002] 3D printing (3DP) is a kind of rapid prototyping technology, also known as additive manufacturing. It is a digital model file based, using powder metal or plastic and other adhesive materials, through layer-by-layer printing to construct. object technology. 3D printing is usually realized by using digital technology material printers. It is often used to make models in the fields of mold making, industrial design, etc., and then it is gradually used for the direct manufacture of some products. The technology has applications in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and more. [0003] Fused deposi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C12/00C22C1/03B22F10/20B33Y70/00
CPCC22C12/00C22C1/03B22F10/20B33Y70/00Y02P10/25
Inventor 杨少华黄平李慧何芳颂谢耀吴广东谢康伟黄国文欧阳森林
Owner カン州晨光希土新材料有限公司
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