Short carbon fiber aluminum based composite material and preparation method thereof

A technology of aluminum-based composite materials and short carbon fibers, which is applied in the direction of metal material coating process, liquid chemical plating, coating, etc., can solve the problems of poor performance of metal-based carbon fibers, achieve short sintering time, low sintering temperature, reduce The effect of exposure to opportunities

Active Publication Date: 2018-06-26
CENT SOUTH UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] In view of the above prior art, the present invention provides a short carbon fiber aluminum matrix composite material preparation method to solve the technical problem of poor performance of the metal matrix carbon fiber prepared by the traditional preparation method

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  • Short carbon fiber aluminum based composite material and preparation method thereof
  • Short carbon fiber aluminum based composite material and preparation method thereof
  • Short carbon fiber aluminum based composite material and preparation method thereof

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Embodiment 1

[0029] A short carbon fiber aluminum matrix composite material is pre-prepared, which includes 9wt% copper-coated short carbon fibers and 91wt% aluminum powder, wherein the copper-coated short carbon fibers have a length of 2 to 3 mm, a diameter of less than 20 μm, and the thickness of the copper coating is 1um; aluminum is aluminum powder with a particle size of 20-100um. The preparation method includes the following steps:

[0030] (1) Put the T-700 original short carbon fiber into a box-type resistance furnace, perform high temperature treatment on the carbon fiber at 400 °C, and keep it for 1 h, and then the furnace is cooled to room temperature. Use 250ml of concentrated HNO with a volume fraction of 65% to 68% 3 Acidified 3g degummed short carbon fiber. The temperature was maintained at 60°C, magnetically stirred for 1.5 h, and then washed with deionized water until neutral. The uniformly dispersed short carbon fibers were added to the sensitizing solution for sensiti...

Embodiment 2

[0035] (1) Put the T-700 original short carbon fiber into a box-type resistance furnace, perform high temperature treatment on the carbon fiber under the condition of 480 ° C, and keep it for 50 minutes, and then the furnace is cooled to room temperature. Use 250ml of concentrated HNO with a volume fraction of 65% to 68% 3 Acidified 3g degummed short carbon fiber. The temperature was maintained at 55°C with magnetic stirring for 100 min, followed by washing with deionized water until neutral. The uniformly dispersed short carbon fibers were added to the sensitizing solution for sensitization treatment. The sensitizing solution was composed of 25g / L SnCl. 2 ·2H 2 O solution and 40mL / L HCl solution were mixed in a volume ratio of 2:1, and the sensitization treatment was carried out by the method of "7min ultrasonic vibration-5min magnetic stirring-5min standing at room temperature", and then washed with deionization until neutral. The sensitized short carbon fibers are placed...

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Abstract

The invention discloses a short carbon fiber aluminum based composite material and a preparation method thereof. The preparation method comprises the steps of surface processing, chemical copper plating, mixing, sintering, etc.; the prepared short carbon fiber aluminum based composite material comprises the following components in percentage by mass: 8-10% of copper plating short carbon fibers, and 90-92% of aluminum powder, wherein the length of the copper plating short carbon fibers is 2-3mm, and the diameter is less than 20 microns; the thickness of a copper plating layer is 1 micron; the particle size of the aluminum powder is 20-100 microns; the measurement result shows that the density of the short carbon fiber reinforced aluminum based composite material is 98.5%, the hardness is 92.38Mpa, the tensile strength is 202.05Mpa, and the bending resistance is 376.05Mpa. With the adoption of the method, the technical problem of low dispersity of short carbon fibers in the composite material can be solved; the prepared short carbon fiber aluminum based composite material is outstanding in performances and meets the use demands of special situations.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber composite material preparation, in particular to a short carbon fiber aluminum matrix composite material and a preparation method thereof. Background technique [0002] Today's traditional materials struggle to cope with the performance required by technological advances. In the search for advanced materials, researchers have innovated various material systems, with metal matrix composites being one of the most prominent in recent decades. Due to the unusual combination of stiffness, strength-to-weight ratio, high-temperature properties and hardness, their applications in aircraft technology, the electronics industry and other fields are growing significantly. Among them, the aluminum matrix composite material is considered to be an excellent metal matrix composite material, due to its low density and easy production, the cost is relatively low. The research on aluminum matrix composites be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/04C22C47/14C22C49/06C22C49/14C23C18/40C23C18/18C22C101/10C22C121/02
CPCC22C47/04C22C47/14C22C49/06C22C49/14C23C18/1893C23C18/405
Inventor 雷霆王禹詹振翔
Owner CENT SOUTH UNIV
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