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Laser induced nanometer brazing method of silicon carbide particle reinforced aluminum matrix composite with high volume fraction

A silicon carbide particle, high volume fraction technology, applied in laser welding equipment, welding/cutting media/materials, welding media, etc., can solve problems such as poor welding quality, and achieve improved wettability, high density, and high bonding intensity effect

Active Publication Date: 2012-10-03
TIGER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem that the welding of the existing high volume fraction particle reinforced aluminum matrix composite material needs to be carried out at a relatively high temperature, and the welding quality is poor, and provides a high volume fraction silicon carbide particle reinforced aluminum matrix composite material. Laser Induced Nano Brazing Method

Method used

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  • Laser induced nanometer brazing method of silicon carbide particle reinforced aluminum matrix composite with high volume fraction
  • Laser induced nanometer brazing method of silicon carbide particle reinforced aluminum matrix composite with high volume fraction
  • Laser induced nanometer brazing method of silicon carbide particle reinforced aluminum matrix composite with high volume fraction

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specific Embodiment approach 1

[0034] Specific Embodiment 1: In this embodiment, the laser-induced nano-brazing method of high volume fraction silicon carbide particles reinforced aluminum matrix composite material is carried out according to the following steps:

[0035] 1. Nanoization of the welded surface of the aluminum matrix composite matrix with high volume fraction silicon carbide particles:

[0036] A nano-grain layer is prepared on the welded surface of the upper substrate and the lower substrate; the materials of the upper substrate and the lower substrate are both high volume fraction silicon carbide particles reinforced aluminum matrix composite materials;

[0037] 2. Preparation of solder:

[0038] Prepare silver-based, aluminum-based or zinc-based solder; wherein the silver-based solder consists of 40-50 parts of Ag, 20-25 parts of Cu, 9-12 parts of In, 16-20 parts of Sn and 2-5 parts of Mg; the aluminum-based brazing filler metal consists of 20-25 parts of Cu, 3-8 parts of Si, 1-3 parts of ...

specific Embodiment approach 2

[0044] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the volume fraction of the SiC particle-reinforced phase in the high-volume SiC particle-reinforced aluminum-based composite material is 50% to 70%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0045] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that: the method of preparing the nano-grain layer on the welded surface of the upper substrate and the lower substrate is mechanical grinding method, high-speed projectile jet method or pulsed laser shock method . Others are the same as in the first or second embodiment.

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Abstract

The invention provides a laser induced nanometer brazing method of a silicon carbide particle reinforced aluminum matrix composite with high volume fraction, which relates to a brazing method of the silicon carbide particle reinforced aluminum matrix composite with high volume fraction. The method comprises the following steps of: (1) preparing nano-crystal particle layers at brazed surfaces of an upper matrix and a lower matrix; (2) preparing a silver matrix, aluminum matrix or zinc matrix brazing filler metal; (3) assembling a piece to be brazed, to be specific, placing the brazing filler metal prepared in the step (2) between the brazed surfaces of the upper matrix and the lower matrix, which are treated in the step (1), so as to form the piece to be brazed; and (4) under the protection of argon, carrying out double-beam laser brazing on the piece to be brazed, so as to achieve laser induced nanometer brazing of the composite. According to the invention, high temperature cannot be generated in the welding process; the shear strength of an obtained joint can reach about 260 MPa, so as to completely satisfy electronic packaging requirements or welding requirements of other materials, which contain a large quantity of ceramic phases and for which high brazing temperature is not allowed, and products thereof. The brazing method provided by the invention is used for brazing the silicon carbide particle reinforced aluminum matrix composite with high volume fraction.

Description

technical field [0001] The invention relates to a brazing method for high volume fraction silicon carbide particle reinforced aluminum matrix composite materials. Background technique [0002] Silicon carbide particle-reinforced aluminum matrix composites have high specific strength, specific stiffness, dimensional stability, designability, wear resistance, corrosion resistance, and radiation resistance, especially because of sufficient raw material sources, low manufacturing costs, and easy access to the market. Accepted, it is a new structural material with the widest application potential among metal matrix composite materials, and can be widely used in aerospace, automobile manufacturing, instrumentation, electronic information, precision machinery and other industrial fields. The high volume fraction (50% to 70%) silicon carbide particle-reinforced aluminum matrix composite has its own uniqueness in electronic packaging and key aerospace components because of its low ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/005B23K1/19B23K1/20B23K35/28B23K35/30B23K103/16
CPCB23K1/0056B23K2203/16B23K1/005B23K1/19B23K1/20B23K26/0604B23K26/356B23K35/0222B23K35/28B23K35/282B23K35/286B23K35/30B23K35/3006B23K35/38B23K35/383B23K2103/16C22C5/02C22C5/06C22C18/00C22C21/14C22C21/16
Inventor 牛济泰王西涛高增李强张宝庆木二珍陈思杰线恒泽曾岗
Owner TIGER TECH CO LTD
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