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Al-base amorphous/nanocrystalline composite solder and preparing method thereof

A nanocrystalline composite and nanocrystalline technology, which is applied in welding/cutting media/materials, manufacturing tools, welding equipment, etc., can solve the problems of difficult clamping of powdered solder, difficult wetting of foil-packed solder, and poor uniformity , to achieve the effect of solving the difficulty of clamping, improving the compactness and joint strength, and increasing the diffusion rate

Active Publication Date: 2015-09-09
HENAN POLYTECHNIC UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of difficult wetting, high melting point, difficult clamping and poor uniformity of the existing foil-packed solder, and provides an Al-based amorphous / nanocrystalline composite solder and its preparation method

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  • Al-base amorphous/nanocrystalline composite solder and preparing method thereof
  • Al-base amorphous/nanocrystalline composite solder and preparing method thereof
  • Al-base amorphous/nanocrystalline composite solder and preparing method thereof

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specific Embodiment approach 1

[0022] Specific embodiment one: the present embodiment is an Al-based amorphous / nanocrystalline composite solder, the atomic percentages of Al element, Cu element and Ti element in the Al-based amorphous / nanocrystalline composite solder are (70~ 77):20:(3~10); the Al-based amorphous / nanocrystalline composite solder is an amorphous / nanocrystalline composite structure, wherein the integral fraction of amorphous is 20%~35%, and the integral fraction of nanocrystal is 65% %~80%.

[0023] The Al-based amorphous / nanocrystalline composite solder prepared by rapid solidification by the single-roll method in this embodiment has the following advantages: ① With the reduction of the particle size of the nanoparticles, the specific surface area increases, the number of surface atoms increases, and the surface atoms coordinate Unsaturation leads to a large number of dangling bonds and unsaturated bonds, which increases the chemical activity of nanoparticles, thereby improving the wettabili...

specific Embodiment approach 2

[0024] Embodiment 2: This embodiment differs from Embodiment 1 in that: the atomic percentages of Al element, Cu element and Ti element in the Al-based amorphous / nanocrystalline composite solder are 75:20:5 in sequence. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0025] Specific embodiment three: this embodiment is different from specific embodiment one or two in that: the atomic percentages of Al element, Cu element and Ti element in the Al-based amorphous / nanocrystalline composite solder are 72:20:8 in sequence . Others are the same as in the first or second embodiment.

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Abstract

The invention relates to Al-base amorphous / nanocrystalline composite solder and a preparing method thereof and solves the problems that the existing foiled solder is difficult to wet and high in melting point and the powdered solder is difficult to clamp and poor in uniformity. Atomic percent of Al, Cu and Ti in the al-base amorphous / nanocrystalline composite solder are (70-77):20:(3-10). The preparing method includes: smelting alloy, and performing rapid solidification by means of a single-roller method to obtain foil strips 0.08mm to 0.15mm in thickness. The al-base amorphous / nanocrystalline composite solder is mainly applied to soldering of aluminum alloys and Al-based composites.

Description

technical field [0001] The invention relates to an Al-based amorphous / nanocrystalline composite solder and a preparation method thereof. Background technique [0002] From the end of the 1980s to the beginning of the 1990s, nanotechnology has emerged in the world. People have used the small size effect, surface and interface effect, quantum size effect and macroscopic quantum tunneling effect of nanometers to cause an industrial revolution in many fields. It has attracted the attention of welding workers. For welding, the small size effect of nanometers and surface and interface effects are mainly used. Since 2000, foreign countries have appeared to spray nano-TiO on the surface of welding wire. 2 Coating to replace the new technology of traditional copper-plated welding wire; in 2007, someone proposed the possibility of applying nanomaterials and nanotechnology in welding rods, welding protection, thermal spraying and flux by using the special surface effects and small si...

Claims

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Application Information

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IPC IPC(8): B23K35/40B23K35/28
CPCB23K35/286B23K35/40
Inventor 程东锋牛济泰陶星空高增王鹏
Owner HENAN POLYTECHNIC UNIV
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