A metal-toughened ceramic matrix composite for 3D printing

A technology for toughening ceramics and composite materials, applied in the field of 3D printing manufacturing, can solve the problems of uneven structure, reduced plasticity and toughness of ceramic products, and poor uniform crystal structure.

Active Publication Date: 2017-03-29
北京市旭鑫耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defects that the plasticity and toughness of ceramic products are reduced due to uneven structure and poor uniformity of crystal structure when ceramic powder is used to manufacture ceramic products by 3D printing, this invention proposes a metal toughened ceramic matrix composite material for 3D printing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Add 80 parts by weight of titanium nitride ceramic microspheres with a sphericity greater than 90 and a particle size of 50 mesh sieve and 1 part by weight of interface modifier water glass with a modulus of 2 into the high-speed disperser, and set the high-speed disperser The temperature is 90-100°C, the vacuum pressure is 0.1MPa, and the speed is 5000rpm for 10 minutes to obtain ceramic microspheres modified by interface erosion;

[0033] 2) The modified ceramic microspheres obtained in step 1), 5 parts by weight of stainless steel fibers with an aspect ratio greater than 20 and a diameter of less than 50 microns, and 0.2 parts by weight of the active agent sodium dodecylsulfonate are placed in a disc grinding Machine grinding, through the rolling between the grinding discs, the metal fibers are embedded on the surface of the ceramic microspheres whose interface has been eroded, and passed through a 20-mesh sieve to obtain spherical metal toughened ceramic matrix co...

Embodiment 2

[0037] 1) Add 85 parts by weight of alumina ceramic microspheres with a sphericity greater than 90 and a particle size of 50 mesh sieve and 1.5 parts by weight of interface modifier water glass with a modulus of 2.5 into the high-speed disperser, and set the high-speed disperser The temperature is 90-100°C, the vacuum pressure is 0.2MPa, and the speed is 8000rpm for 15 minutes to obtain ceramic microspheres modified by interface erosion;

[0038] 2) The modified ceramic microspheres obtained in step 1), 6 parts by weight of aluminum fibers with an aspect ratio greater than 20 and a diameter of less than 50 microns, and 0.3 parts by weight of the active agent sodium hexametaphosphate are placed in a disc grinder for grinding, and passed The rolling between the grinding discs makes the metal fibers embedded on the surface of the ceramic microspheres whose interface has been eroded, and passes through a 20-mesh sieve to obtain spherical metal-toughened ceramic matrix composite par...

Embodiment 3

[0041] 1) Add 90 parts by weight of silicon carbide ceramic microspheres with a sphericity greater than 90 and a particle size of 50 mesh sieve and 1.5 parts by weight of an interface modifier water glass with a modulus of 2 into the high-speed disperser, and set the high-speed disperser The temperature is 90-100°C, the vacuum pressure is 0.3MPa, and the speed is 10000rpm, and the high-speed dispersion is performed for 20min to obtain interface erosion modified ceramic microspheres;

[0042] 2) The modified ceramic microspheres obtained in step 1), 10 parts by weight of nickel fibers with an aspect ratio greater than 20 and a diameter of less than 50 microns, and 0.4 parts by weight of active agent polyacrylamide are placed in a disc grinder for grinding, and through grinding The rolling between the disks makes the metal fibers embedded on the surface of the ceramic microspheres whose interface has been eroded, and passes through a 20-mesh sieve to obtain spherical metal-toughe...

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Abstract

The invention provides a metal toughened ceramic-based composite material for 3D printing. Metal fibers are roundly embedded on the surface of ceramic microspheres to form metal toughened ceramic composite microspheres. The composite material is prepared from the following raw materials in parts by weight: 80 to 90 parts of ceramic microsphere, 5 to 10 parts of metal fiber, 1 to 1.5 parts of interface modifier, 0.1 to 0.5 part of activator, and 3 to 5 parts of bonding agent. The ceramic microsphere surface is modified through interface corrosion so as to form an embeddable interface on the surface of ceramic microspheres; then metal fibers are rolled and pressed by a disc grinder so as to embed the metal fibers into the surface of ceramic microspheres with eroded interface, thus metal toughened ceramic composite microspheres can be obtained, the metal fibers are winded and embedded on the surface of ceramic microspheres; the ball shape of the composite material meets the requirements of 3D printing, moreover, the metal fibers are arranged on the surface of ceramic microspheres in a net shape, thus after 3D printing and sintering, the metal on the ceramic product is arranged in a net shape, and the toughening is achieved.

Description

technical field [0001] The invention belongs to the field of 3D printing and manufacturing, and relates to 3D printing materials, in particular to a metal-toughened ceramic-based composite material for 3D printing. Background technique [0002] "3D printing" is a popular name, and its academic name is "Rapid Prototyping & Manufacturing", which is a forming principle that uses material accumulation. The rapid prototyping system is like a "three-dimensional printer", which can quickly and precisely manufacture new product samples of any complex shape without the need for traditional tools, machine tools, and fixtures. 3D printing technology is an advanced manufacturing technology developed by the multidisciplinary integration of information technology, new material technology and high-end manufacturing technology. It not only overcomes the loss caused by traditional subtractive manufacturing, but also makes product manufacturing more intelligent, more accurate and more efficie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/76C04B35/626
Inventor 陈庆曾军堂
Owner 北京市旭鑫耐火材料有限公司
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