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A preparation method of corrosion-resistant silicon carbide particle reinforced magnesium-based composite plate

A technology of silicon carbide particles and composite plates, which is applied in metal rolling and other directions, can solve the problems of easy edge cracking, poor corrosion resistance, and low bonding strength, and achieve increased interface bonding strength, strong corrosion resistance, and reduced interface oxidation. Effect

Active Publication Date: 2020-10-13
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problem that the existing magnesium-based composite plates have poor corrosion resistance, are prone to edge cracks, are difficult to form, are difficult to find suitable solders, have low bonding strength, and consume large amounts of energy. Mold, the technical problem of the limited size of the composite plate produced, and provide a preparation method of corrosion-resistant silicon carbide particle reinforced magnesium-based composite plate

Method used

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  • A preparation method of corrosion-resistant silicon carbide particle reinforced magnesium-based composite plate
  • A preparation method of corrosion-resistant silicon carbide particle reinforced magnesium-based composite plate
  • A preparation method of corrosion-resistant silicon carbide particle reinforced magnesium-based composite plate

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specific Embodiment approach 1

[0022] Specific implementation mode 1: This implementation mode is a method for preparing a corrosion-resistant silicon carbide particle reinforced magnesium-based composite plate, which is specifically carried out according to the following steps:

[0023] 1. Preparation of micron silicon carbide particle-reinforced magnesium-based composite material: heat the AZ91D magnesium alloy ingot to 750°C to 760°C to melt, preheat the micron silicon carbide particles to 600°C to 610°C, and then cool the molten magnesium alloy to half Solid state, the stirring speed is 25r / min~30r / min and rotate clockwise to form a vortex, then add micron silicon carbide particles preheated at a temperature of 600°C~610°C, and continue along the Rotate and stir in a clockwise direction for 25min to 30min, change the direction of rotation of the propeller, rotate and stir in a counterclockwise direction at a semi-solid temperature and a stirring speed of 25r / min to 30r / min for 15min to 20min, then rotate...

specific Embodiment approach 2

[0028] Embodiment 2: This embodiment differs from Embodiment 1 in that: the particle size of the micron silicon carbide particles described in Step 1 is ≤10 μm. Others are the same as the first embodiment.

specific Embodiment approach 3

[0029] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that in step two, the surface of the magnesium plate and the aluminum plate is cleaned according to the following steps: the magnesium plate is mechanically cleaned and ultrasonically cleaned in sequence; The aluminum plates are cleaned mechanically, chemically and ultrasonically in sequence. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of a corrosion-resistant silicon carbide particle reinforced magnesium-based composite board, and relates to a preparation method of the magnesium-based composite board. The method aims to solve the problems that an existing magnesium-based composite board is poor in corrosion resistance, easy to crack and difficult to form, the bonding strength is low,the energy consumption is large, a certain risk exists, a specific mold is needed, and the size of the produced composite board is limited. The preparation method comprises the following steps of 1,preparing a micron silicon carbide particle reinforced magnesium-based composite material; 2, a Mg plate an Al plate grading variable-temperature variable-load hot-pressing. According to the method, the aluminum-magnesium composite board is subjected to grading variable-temperature variable-load hot pressing under the protection of gas, the processing and deformation of the silicon carbide particle reinforced AZ91D magnesium-based composite material can be ensured on the premise of ensuring that the silicon carbide particle reinforced AZ91D magnesium-based composite material is not cracked, and is in metallurgical bonding with the aluminum plate, and the corrosion resistance of the prepared corrosion-resistant magnesium-aluminum composite board is relatively high.

Description

technical field [0001] The invention relates to a preparation method of a magnesium-based composite plate. Background technique [0002] Silicon carbide particle reinforced AZ91D magnesium matrix composites (Particle Reinforced Magnesium Matrix Composites), as a structural material with light weight, high strength and high modulus, has been widely favored by researchers. [0003] Compared with magnesium, aluminum and aluminum alloys have good corrosion resistance and can be used as a surface material; at the same time, an intermediate phase can be formed between magnesium and aluminum, making the combination of magnesium and aluminum possible. The use of aluminum alloys to coat magnesium-based composites can improve the corrosion resistance of magnesium-based composites while retaining the excellent properties of magnesium-based composites to the greatest extent, and expand the application fields of materials. [0004] The commonly used methods for preparing composite plate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/00C22C32/00C22C1/02C22C1/10B21B1/38
Inventor 邓坤坤王宏伟王翠菊聂凯波史权新梁伟
Owner TAIYUAN UNIV OF TECH