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Preparation method of layered aluminum matrix composite without residual pyrolytic carbon

A technology of aluminum-based composite materials and pyrolytic carbon, which is applied in the direction of metal layered products, chemical instruments and methods, lamination, etc., can solve the problem of weak interfacial bonding performance of layered composite materials, complicated thickness control methods, and inaccurate thickness control and other problems, to achieve the effect of simple thickness control method, shortened warm-up time and accurate thickness

Active Publication Date: 2019-07-02
HARBIN INST OF TECH
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  • Abstract
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Problems solved by technology

[0005] The invention aims to solve the problems of complex thickness control method, inaccurate thickness control, weak interfacial bonding performance of layered composite materials, easy collapse of prefabricated body during the preparation process of the existing layered aluminum matrix composite material and the prepared layered aluminum matrix composite material. The problem of residual pyrolytic carbon in aluminum matrix composites, a method for the preparation of layered aluminum matrix composites without residual pyrolytic carbon is proposed

Method used

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  • Preparation method of layered aluminum matrix composite without residual pyrolytic carbon
  • Preparation method of layered aluminum matrix composite without residual pyrolytic carbon

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specific Embodiment approach 1

[0053] Specific embodiment 1: The preparation method of the layered aluminum-based composite material without residual pyrolytic carbon in this implementation is carried out in the following steps:

[0054] 1. Weighing:

[0055] Weigh 5 to 35 parts of SiC powder, 20 to 40 parts of solvent, 0.01 to 0.5 parts of dispersant, 5 to 20 parts of plasticizer, 4.5 to 69.9 parts of binder and 65 to 65 parts by mass. 95 parts of aluminum metal as raw material;

[0056] The solvent is a mixture of absolute ethanol and n-butanol in a mass ratio (0.5-1):1;

[0057] The dispersant is fish oil;

[0058] The plasticizer is tributyl phosphate;

[0059] The binder is polyvinyl butyral resin powder;

[0060] 2. SiC slurry preparation:

[0061] Mix the SiC powder, solvent, and dispersant weighed in step 1 to obtain a mixed slurry, perform ultrasonic dispersion on the mixed slurry, and then place the ultrasonically dispersed mixed slurry in a ball mill, and add a diameter of 5mm-30mm to the ball mill The alum...

specific Embodiment approach 2

[0078] Specific embodiment two: this embodiment is different from specific embodiment one in that the SiC powder in step one is one or a combination of 3C, 2H, 4H and 6H in any ratio; the average particle size of the SiC powder is 0.3~50μm. The other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0079] Specific embodiment three: this embodiment is different from specific embodiment one or two in that: the aluminum metal in step one is pure aluminum or aluminum alloy block; the aluminum alloy is Al-Si alloy, Al-Cu alloy, Al -Mg alloy, Al-Si-Cu alloy, Al-Si-Mg alloy, Al-Cu-Mg alloy, Al-Zn-Cu alloy, Al-Zn-Mg-Cu alloy, Al-Be alloy, Al-Li alloy , Al-Si-Cu-Mg alloy one or a mixture of several; the mass fraction of Si in the Al-Si alloy is 0.5%-25%; the mass fraction of Cu in the Al-Cu alloy is 0.5 %~53%; the mass fraction of Mg in the Al-Mg alloy is 0.5%~38%; the mass fraction of Si in the Al-Si-Cu alloy is 0.5%~25%, and the mass fraction of Cu is 0.5%~53 %; the mass fraction of Si in Al-Si-Mg alloy is 0.5%-25%, the mass fraction of Mg is 0.5%-38%; the mass fraction of Cu in Al-Cu-Mg alloy is 0.5%-53%, Mg The mass fraction of Zn in Al-Zn-Cu alloy is 0.5% to 55%, and the mass fraction of Cu is 0.5% to 53%; the mass fraction of Zn in Al-Zn-Mg-Cu alloy is 0.5% to 38%; The mas...

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Abstract

The invention relates to a preparation method for a laminated aluminum matrix composite material without residual pyrolytic carbon. The preparation method for the laminated aluminum matrix composite material without residual pyrolytic carbon disclosed by the invention aims at solving the problems that in an existing laminated aluminum matrix composite material preparation process, a thickness control method is complex, thickness control is inaccurate, cost is high, interface combination performance of the laminated composition material is weak, a prefabricated body is prone to collapsing in acomposite material preparation process, and the prepared laminated aluminum matrix composite material has residual pyrolytic carbon. The preparation method comprises the steps: 1, weighing materials;2, preparing SiC slurry; 3, tape casting SiC nanowire raw sheets; 4, preparing the prefabricated body; 5, degreasing, preheating and removing residual pyrolytic carbon; 6, impregnating molten aluminum. According to the preparation method disclosed by the invention, oxidizing and removing the pyrolytic carbon is achieved, preheating time is shortened, the thickness control method is simple, the thickness is accurate, a technology is simple, aluminum foils can separate SiC nanowire layers and further can ensure integrity of a laminated structure of the composite material, and interface combination of the composite material is excellent.

Description

Technical field [0001] The invention relates to a preparation method of a layered aluminum-based composite material without residual pyrolysis carbon. Background technique [0002] Inhomogeneous composite materials are expected to break through the performance limits of existing metal matrix composites due to their higher damage tolerance and good strength matching. Therefore, they have been extensively studied in recent years. Among them, the layered metal matrix composite with imitating shell structure Materials research is the most in-depth. [0003] At present, the methods for preparing layered structured metal matrix composite materials mainly include powder layering method and rolling method. The powder layup method first mixes the ceramic powder with the metal powder according to the set ratio, and then lays it according to the composition ratio, and sinters it at a temperature lower than the melting point of the metal. Since the price of aluminum powder is more than 10 ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/00B32B9/04B32B7/08B32B15/20B32B15/04B32B37/06B32B37/08B32B37/10B32B38/16B32B38/00B22D23/04
CPCB22D23/04B32B7/08B32B9/005B32B9/041B32B15/043B32B15/20B32B37/06B32B37/08B32B37/10B32B38/00B32B38/164B32B2038/0052B32B2038/168B32B2307/714B32B2311/24B32B2315/02
Inventor 杨文澍赵旗旗武高辉乔菁姜龙涛陈国钦张强康鹏超修子扬芶华松
Owner HARBIN INST OF TECH
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