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Near-zero expansion coefficient ceramic composite material and preparation method thereof

A ceramic composite material and near-zero expansion technology, applied in the field of ceramic composite materials, can solve the problems of poor dimensional stability, weak bending resistance and toughness, and achieve excellent near-zero expansion performance, good heat resistance effect and high stability. Effect

Inactive Publication Date: 2021-09-24
SHENZHEN SOOCAS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide a near-zero expansion coefficient ceramic composite material and its preparation method, aiming to solve the problems of poor dimensional stability, weak bending resistance and toughness of ceramic composite materials in the prior art

Method used

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  • Near-zero expansion coefficient ceramic composite material and preparation method thereof
  • Near-zero expansion coefficient ceramic composite material and preparation method thereof
  • Near-zero expansion coefficient ceramic composite material and preparation method thereof

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preparation example Construction

[0051] The second aspect of the embodiment of the present application provides a method for preparing a near-zero expansion coefficient ceramic composite material, comprising the following steps:

[0052] S01. Provide each component according to the ceramic composite material with near zero expansion coefficient;

[0053] S02. Performing a first mixing treatment on ceramic raw materials and additives, and performing grinding treatment to obtain a first mixture;

[0054] S03. The first mixture is mixed with hafnium tungstate and Ti-Ni alloy to obtain a second mixture;

[0055] S04. The second mixture is extruded and sintered to obtain a nearly zero expansion coefficient ceramic composite material.

[0056] The preparation method of the near-zero expansion coefficient ceramic composite material provided by the second aspect of the application is simple, the sintering temperature is low, and the preparation cycle is short, which can reduce production costs, save energy consumpti...

Embodiment 1

[0065] A kind of nearly zero expansion coefficient ceramic composite material and preparation method thereof

[0066] A near-zero expansion coefficient ceramic composite material

[0067] Comprising the following components by weight:

[0068]

[0069] Wherein, the ceramic raw material comprises the following components in parts by weight:

[0070] 75 parts of ceramic main material;

[0071] 5 parts of ceramic auxiliary materials; and,

[0072] The main ceramic material is selected from a mixture of zirconia and alumina with an average particle size of 200 nanometers, and the auxiliary ceramic material is selected from silicon nitride with an average particle size of 5 microns;

[0073] Ti-Ni alloys are selected from porous Ti 75 Ni 25 , and the pore size of the porous Ti-Ni alloy is 1 micron;

[0074] Auxiliaries include the following components by weight:

[0075] Filling agent 8 parts;

[0076] Adhesive 0.5 part;

[0077] 0.5 parts of dispersant; and,

[0078]...

Embodiment 2

[0086] A kind of nearly zero expansion coefficient ceramic composite material and preparation method thereof

[0087] A near-zero expansion coefficient ceramic composite material

[0088]Comprising the following components by weight:

[0089]

[0090] Wherein, the ceramic raw material comprises the following components in parts by weight:

[0091] 80 parts of ceramic main material;

[0092] 10 parts of ceramic auxiliary materials; and,

[0093] The main ceramic material is selected from zirconia with an average particle size of 250 nanometers, and the auxiliary ceramic material is selected from silicon nitride with an average particle size of 8 microns;

[0094] Ti-Ni alloys are selected from porous Ti 73.8 Ni 26.2 , and the pore size of the porous Ti-Ni alloy is 2 microns;

[0095] Auxiliaries include the following components by weight:

[0096] 13.5 parts of filler;

[0097] 1 part adhesive;

[0098] 0.5 parts of dispersant; and,

[0099] The filler is selected...

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Abstract

The invention relates to the technical field of ceramic composite materials, and provides a near-zero expansion coefficient ceramic composite material which comprises the following components in parts by weight: 80 to 110 parts of a ceramic raw material; 0.5 to 2 parts of hafnium tungstate; 0.5 to 5 parts of Ti-Ni alloy; and 5.6 to 26.5 parts of an auxiliary agent. According to the material, a ceramic raw material, hafnium tungstate and a Ti-Ni alloy are compounded for use, hafnium tungstate and the Ti-Ni alloy have a synergistic effect and are both negative thermal expansion coefficient materials, it can be guaranteed that the expansion coefficient of the obtained ceramic composite material is close to zero, it is guaranteed that the expansion coefficient property of the ceramic composite material is stable; meanwhile, the size stability is good; the material has good bending resistance and toughness, and is suitable for wide use.

Description

technical field [0001] The application belongs to the technical field of ceramic composite materials, and in particular relates to a near-zero expansion coefficient ceramic composite material and a preparation method thereof. Background technique [0002] Ceramic knives are developed using precision ceramics under high pressure, so they are called ceramic knives. Ceramic knives are known as "noble knives". As a product of modern high-tech, they have advantages that traditional gold-white ceramic knives cannot match; high-tech nano-zirconia, aluminum oxide, silicon nitride, etc. are used as raw materials, so ceramic knives are also It is called "Zirconium Gem Knife". Most of the ceramic knives on the market are processed with a nano-material "zirconia". Zirconia powder is used to press 300 tons of heavy pressure with a mold at a high temperature of 2000 ℃ to make a knife blank, and then it is polished with diamond and equipped with a handle to make a finished ceramic knife....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/26C04B35/10C04B35/63C04B35/622
CPCC04B35/48C04B35/10C04B35/6303C04B35/2666C04B35/622C04B2235/3217C04B2235/3244C04B2235/3873C04B2235/326C04B2235/404C04B2235/3418C04B2235/447C04B2235/3272C04B2235/5445C04B2235/5436C04B2235/602C04B2235/656C04B2235/96C04B2235/9607
Inventor 孟凡迪
Owner SHENZHEN SOOCAS TECH CO LTD