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A kind of graphene-zinc oxide whisker-tin-based composite material and preparation method thereof

A technology of zinc oxide whiskers and composite materials, which is applied in the direction of welding/cutting media/materials, manufacturing tools, welding equipment, etc., can solve the problems of not developing lead-free solder, etc., and achieve suitable for large-scale production, good density, and improved Dispersion effect

Inactive Publication Date: 2018-01-30
XIAMEN HOLY ISLAND OF METAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, so far, still haven't developed a kind of lead-free solder that can completely replace traditional tin-lead solder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Under a nitrogen environment, ultrasonically atomize tin with a purity of 99.9% into 200-mesh tin powder;

[0023] 2) Weigh the obtained tin powder, graphene and zinc oxide whiskers at a weight ratio of 95.5:4:0.5, and mix them in a V-type powder mixer for 2 hours at a mixing speed of 10r / min;

[0024] 3) Put the mixed powder obtained in step 2) into a VC high-efficiency mixer and mix for 10 minutes at a mixing speed of 100r / min;

[0025] 4) Put the mixed powder obtained in step 3) and the high-carbon chromium bearing steel grinding balls in the stirring ball mill at the same time, the weight ratio of the balls is 5:1, and then fill it with liquid nitrogen until the grinding balls are completely submerged. Ball milling 2h;

[0026] 5) Take out the ball-milled powder, put it in an inert gas protective box to cool to room temperature, and then put it into a mold for hot pressing and sintering. The sintering pressure is 50MPa, the temperature is 600°C, and the sinterin...

Embodiment 2

[0029] 1) Under a nitrogen environment, ultrasonically atomize tin with a purity of 99.9% into 200-mesh tin powder;

[0030] 2) Weigh the obtained tin powder, graphene and zinc oxide whiskers at a weight ratio of 95:4:1, and mix them in a V-type powder mixer for 2 hours at a mixing speed of 10r / min;

[0031] 3) Put the mixed powder obtained in step 2) into a VC high-efficiency mixer and mix for 10 minutes at a mixing speed of 100r / min;

[0032] 4) Put the mixed powder obtained in step 3) and the high-carbon chromium bearing steel grinding balls in the stirring ball mill at the same time, the weight ratio of the balls is 5:1, and then fill it with liquid nitrogen until the grinding balls are completely submerged. Ball milling 2h;

[0033] 5) Take out the ball-milled powder, put it in an inert gas protective box to cool to room temperature, and then put it into a mold for hot pressing and sintering. The sintering pressure is 50MPa, the temperature is 600°C, and the sintering ti...

Embodiment 3

[0036] 1) Under a nitrogen environment, ultrasonically atomize tin with a purity of 99.9% into 200-mesh tin powder;

[0037] 2) Weigh the obtained tin powder, graphene, and zinc oxide whiskers according to the weight ratio of 94.5:4:1.5, and mix them in a V-type powder mixer for 2 hours at a mixing speed of 10r / min;

[0038] 3) Put the mixed powder obtained in step 2) into a VC high-efficiency mixer and mix for 10 minutes at a mixing speed of 100r / min;

[0039] 4) Put the mixed powder obtained in step 3) and the high-carbon chromium bearing steel grinding balls in the stirring ball mill at the same time, the weight ratio of the balls is 5:1, and then fill it with liquid nitrogen until the grinding balls are completely submerged. Ball milling 2h;

[0040] 5) Take out the ball-milled powder, put it in an inert gas protective box to cool to room temperature, and then put it into a mold for hot pressing and sintering. The sintering pressure is 50MPa, the temperature is 600°C, and...

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Abstract

The invention discloses a grapheme, zinc oxide crystal whisker and tin base composite material and a preparation method thereof. The grapheme, zinc oxide crystal whisker and tin base composite material comprises, by weight, 1-4 parts of grapheme, 0.5-1.5 parts of zinc oxide crystal whiskers and 94.5-98.5 parts of tin. The grapheme, zinc oxide crystal whisker and tin base composite material can replace traditional tin-lead solder to serve as a connection material for an integrated circuit of a super-large scale, overcomes the defect that the lead element in the traditional tin-lead solder pollutes the environment and is harmful to health, has the higher and more reliable mechanical property compared with existing lead-free solder, and meets the development tendency of the modern electronic industry.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a graphene-zinc oxide whisker-tin-based composite material and a preparation method thereof. Background technique [0002] With the advent of the information age, the electronic industry has developed rapidly, and the rapid popularization of products such as computers and mobile phones has made the electronic industry one of the most eye-catching and promising industries. The prosperity of the electronics industry has also led to the development of the closely related electronics manufacturing industry. As a key link in the electronics manufacturing process, the importance of electronic packaging has become increasingly significant. Soldering is an ideal technique for ensuring conductive interconnections between electronic package components. As a connecting material, solder is responsible for the functions of mechanical connection, electrical connection an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/26B23K35/40
CPCB23K35/262B23K35/40
Inventor 刘乐光
Owner XIAMEN HOLY ISLAND OF METAL TECH CO LTD