Damping brazing alloy and preparation method thereof

A brazing filler metal and alloy technology, which is applied in the field of shock-absorbing filler metal alloy and its preparation, can solve the problems that the shock absorbing performance of the filler metal alloy cannot meet expectations, hinder the application of the filler metal alloy, etc., so as to improve the stability and usability. , The effect of improving long-term reliability and reducing internal defects

Inactive Publication Date: 2013-07-17
PERFECTION SCI & TECH DONGGUAN
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the damping performance of solder alloys is far from the expected level, w

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Damping brazing alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: magnesium foam 1.0%,

[0024] Copper 0.7%,

[0025] Lanthanum cerium mixed rare earth 1.5%,

[0026] Tin 96.8%.

[0027] Preparation steps: (1) Mechanical alloying of metal powder: First, 96.8% tin powder (powder diameter is 25 microns to 63 microns), 0.7% copper powder (powder diameter is 25 microns to 63 microns), 1.5% lanthanum cerium powder Mixed rare earth powder (powder diameter of 25 microns to 63 microns) and 1.0% foamed magnesium powder (powder diameter of 25 microns to 63 microns) were added to the ball mill filled with argon, in order to prevent the metal powder from being mixed with the metal during the mechanical alloying process For cold welding of steel balls and steel tanks, 1.0% tetrahydrofuran solution should be added to the total weight of the metal powder. The ball-to-material ratio is 7:1, the rotation speed is 300 rpm, and the ball milling time is 8 hours, that is, the mechanical alloying of metal elements is completed. , to obtain...

Embodiment 2

[0028] Embodiment 2: foamed magnesium 10.0%,

[0029] Silver 0.3%,

[0030] Bismuth 58.0%,

[0031] Nickel 0.03%,

[0032] Lanthanum cerium mixed rare earth 0.25%,

[0033] Tin 31.42%.

[0034] Preparation steps: (1) Mechanical alloying of metal powder: First, 31.42% tin powder (powder diameter is 25 microns to 63 microns), 0.3% silver powder (powder diameter is 25 microns to 63 microns), 58.0% bismuth powder ( Powder diameter is 25 microns to 63 microns), 0.03% nickel powder (powder diameter is 25 microns to 63 microns), 0.25% lanthanum cerium mixed rare earth powder (powder diameter is 25 microns to 63 microns) and 10.0% foamed magnesium powder (powder The diameter is 25 microns ~ 63 microns) into the ball mill filled with argon, in order to prevent the metal powder from cold welding with the steel ball and the steel tank during the mechanical alloying process, it is necessary to add 3.0% tetrahydrofuran solution accounting for the total weight of the metal powder, The ...

Embodiment 3

[0035] Embodiment 3: foam magnesium 20.0%,

[0036] Copper 0.5%,

[0037] Silver 3.0%,

[0038] Bismuth 0.05%,

[0039] Nickel 0.05%,

[0040] Lanthanum cerium mixed rare earth 0.1%,

[0041] Tin 76.3%.

[0042] Preparation steps: (1) Mechanical alloying of metal powder: First, 76.3% tin powder (powder diameter is 25 microns to 63 microns), 0.5% copper powder (powder diameter is 25 microns to 63 microns), 3.0% silver powder ( Powder diameter is 25 microns ~ 63 microns), 0.05% bismuth powder (powder diameter is 25 microns ~ 63 microns), 0.05% nickel powder (powder diameter is 25 microns ~ 63 microns), 0.1% lanthanum cerium mixed rare earth powder (powder diameter 25 microns ~ 63 microns) and 20.0% foamed magnesium powder (powder diameter 25 microns ~ 63 microns) are added to the ball mill filled with argon, in order to prevent metal powder from occurring with steel balls and steel tanks during mechanical alloying Cold welding needs to add tetrahydrofuran solution accounti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the technical field of electronic brazing alloy, belongs to an improvement on the prior art and particularly relates to a damping brazing alloy and a preparation method thereof. The damping brazing alloy is composed of the components including tin, foamed magnesium and other alloy elements and prepared by using a two-step method. Compared with the prior art, the damping brazing alloy and the preparation method thereof have the following advantages: firstly, due to the addition of the foamed magnesium, damping performance of the brazing alloy is remarkably improved, the long-term reliability of a brazing point can be favorably improved, and the stability and usability of an electronic product can be improved; and secondly, due to the application of the two-step method, the foamed magnesium and other metal powders are sufficiently and uniformly mixed, so that the sintered brazing alloy is more uniform in component, remarkably reduced in inside defect and improved on performance. The damping brazing alloy is practical and high in industrial application value.

Description

technical field [0001] The invention relates to the technical field of electronic solder alloys, is an improvement on the prior art, and in particular relates to a shock-absorbing solder alloy and a preparation method thereof. Background technique [0002] Electronic solder alloys are essential basic materials for the modern electronics industry. In order to replace the toxic traditional tin-lead solder, the world has conducted extensive research on electronic solder alloys, including: tin-copper series, tin-silver-copper series, tin-bismuth series, tin-indium series, tin-zinc series, etc. Electronic solder with dozens of alloy components. With the continuous improvement of modern science and technology and people's living standards, electronic products are constantly developing towards high integration, multi-function and high performance. As an important material for the assembly and connection of electronic products, the performance of solder alloys is also placed high...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22C13/00C22C1/04B23K35/26
Inventor 徐安莲邓小安黄云波
Owner PERFECTION SCI & TECH DONGGUAN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap