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Three-dimensional shell ceramic skeleton-metal matrix composite and preparation method thereof

A technology of ceramic skeleton and composite materials, which is applied in processing and manufacturing, additive processing, etc., can solve the problems of difficult impregnation of molten metal and ceramic preforms, poor plasticity and toughness of ceramic-metal composite materials, and ceramic preforms are easy to fall apart. Achieve the effects of good molding effect, low production cost and high production efficiency

Active Publication Date: 2018-08-14
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Another object of the present invention is to provide a preparation method of a three-dimensional shell ceramic skeleton-metal matrix composite material, which mainly solves the difficulty of impregnating the molten metal and the ceramic preform, the poor plasticity and toughness of the ceramic-metal composite material, and the easy disintegration of the ceramic preform problem, including the following steps:

Method used

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  • Three-dimensional shell ceramic skeleton-metal matrix composite and preparation method thereof
  • Three-dimensional shell ceramic skeleton-metal matrix composite and preparation method thereof

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Embodiment 1

[0026] The structure of the three-dimensional shell ceramic skeleton-metal matrix composite material in this embodiment is: the inside and outside of the three-dimensional shell ceramic skeleton are filled with a metal matrix, wherein the three-dimensional shell ceramic skeleton has a column interpenetrating structure, and the skeleton itself has a certain A hollow structure with a thick wall, the nodes of the interpenetrating columns are spherical, and the outer diameter of the spherical nodes is 5mm; the outer diameter of the interpenetrating columns is 3mm, and the length is 6mm; the wall thickness of the three-dimensional shell ceramic skeleton is 1mm.

[0027] The preparation method of the three-dimensional shell ceramic skeleton-metal matrix composite material described in this embodiment specifically includes the following steps:

[0028] (1) The skeleton model was designed in combination with CAD, and the model was sliced ​​by 3D printing slicing software. The thickness...

Embodiment 2

[0034] The structure of the three-dimensional shell ceramic skeleton-metal matrix composite material in this embodiment is: the inside and outside of the three-dimensional shell ceramic skeleton are filled with a metal matrix, wherein the three-dimensional shell ceramic skeleton has a column interpenetrating structure, and the skeleton itself has a certain The hollow structure of the wall thickness, the joints of the interpenetrating columns are cylindrical, in which the height of the cylindrical joints is 6mm, the outer diameter is 6mm; the outer diameter of the interpenetrating columns is 4mm, and the length is 8mm; the wall thickness of the three-dimensional shell ceramic skeleton is 2mm .

[0035] The preparation method of the three-dimensional shell ceramic skeleton-metal matrix composite material described in this embodiment specifically includes the following steps:

[0036] (1) The skeleton model was designed in combination with CAD, and the model was sliced ​​by 3D pr...

Embodiment 3

[0042] The structure of the three-dimensional shell ceramic skeleton-metal matrix composite material in this embodiment is: a metal matrix is ​​filled inside and outside the three-dimensional shell ceramic skeleton, wherein the three-dimensional shell ceramic skeleton is a column interpenetrating structure, and the skeleton itself is a hollow structure , the joints of the interpenetrating columns are cube-shaped, and the side length of the cube-shaped nodes is 6mm, the outer diameter of the interpenetrating columns is 5mm, and the column length is 10mm; the wall thickness of the three-dimensional shell ceramic skeleton is 3mm.

[0043] The preparation method of the three-dimensional shell ceramic skeleton-metal matrix composite material described in this embodiment specifically includes the following steps:

[0044] (1) The skeleton model was designed in combination with CAD, and the model was sliced ​​by 3D printing slicing software. The printing layer thickness was 0.2 mm, an...

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Abstract

The invention discloses a three-dimensional shell ceramic skeleton-metal matrix composite and a preparation method thereof, and belongs to the field of metal matrix composites. According to the structure of the three-dimensional shell ceramic skeleton-metal matrix composite, the inside and outside of a three-dimensional shell ceramic skeleton is filled with a metal matrix, the whole three-dimensional shell ceramic skeleton is of a hollow shell structure, interpenetrating column pitch points are in a spherical, cylindrical or square shape, and the wall thickness of the three-dimensional shell ceramic skeleton is 0.5-3mm. According to the preparation method, the difficulty of infiltration of metal liquid and ceramic reinforcement is improved effectively, the inside and outside of the shell is wrapped with a pure matrix, and the plastic toughness of the composite is not lost while good wear resistance is achieved. The shape of the pitch points of the skeleton is in a spherical, cylindrical and square shape, the pitch points of the skeleton are distributed periodically, certain connection strength during sintering can be provided, and the synergistic effect of the skeleton structure and the matrix is brought maximally. The three-dimensional shell ceramic skeleton-metal matrix composite is expected to be used in the field of friction and abrasion working conditions.

Description

technical field [0001] The invention relates to a three-dimensional shell ceramic skeleton-metal matrix composite material and a preparation method thereof, belonging to the field of metal matrix composite materials. Background technique [0002] Metal matrix composites reinforced with ceramic particles exhibit various excellent properties, and the composite materials in which ceramic particles are uniformly distributed in the metal matrix are not suitable for special working conditions. The development of metal matrix composites reinforced with ceramic preforms with a specific structure is a general need, which can maximize the synergistic effect of ceramics and metal matrix. However, for a long time, problems such as difficult impregnation of molten metal and ceramic preforms, poor plasticity and toughness of ceramic-metal matrix composites, and design and preparation of complex ceramic structures have been the heart problems of researchers engaged in metal matrix composit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10B29C64/10B33Y10/00B33Y80/00
CPCC22C1/1015C22C1/1036B29C64/10B33Y10/00B33Y80/00
Inventor 卢德宏何光宇
Owner KUNMING UNIV OF SCI & TECH
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