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Preparation method for metal matrix ceramic material

A ceramic material and metal-based technology, applied in the field of preparation of metal-based ceramic materials, can solve the problems of process or raw material ratio, poor economic performance, and limited application, so as to promote industrial application, facilitate material acquisition, and process realization convenient effect

Active Publication Date: 2017-11-17
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When applied to the field of capacitors, the materials are required to have high resistivity and large dielectric constant, among which rutile (TiO 2 ) ceramics and titanium dioxide-containing composite oxide ceramics, but these ceramic materials have the disadvantages of single preparation process, poor economic performance, and limited application. In application, more problems of simple preparation and high cost need to be solved. Now technicians are working hard to develop better materials
[0003] Based on the problems existing in the existing technology, researchers began to develop more excellent alloy materials. Iron-based materials have become one of the focuses of current research because of their excellent economic performance and various structural composite forms. Chengdu Yitai Technology Co., Ltd. also disclosed A method for preparing sintered Fe-Al-based alloy materials. The prepared materials have good high-temperature oxidation resistance, but the patent does not improve and publish the problem of porosity caused by the process scheme and powder ratio. The process or raw materials There is a problem with the ratio

Method used

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  • Preparation method for metal matrix ceramic material
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  • Preparation method for metal matrix ceramic material

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A method for preparing a metal-based ceramic material, the specific steps are as follows:

[0023] (1) According to Fe 64 (Si 3 N 4 ) 2 (BN) 10 Nb 24 The stoichiometric ratio of raw materials Fe and Si were weighed with an electronic scale 3 N 4 , BN, Nb powder, and fully grind for 0.5h to mix;

[0024] (2) Add the binder to the mixed powder in step (1) according to the ratio of binder to mixed powder mass ratio of 1:6, where the binder is anhydrous ethanol and polyvinyl alcohol PVAL according to the mass ratio 1:3 mixture, mixing, tableting, pre-sintering, the pressure of tableting is 20MPa, and the pressure is kept for 3min for every increase of 4MPa from 0, and finally pressed into a cylindrical shape with a diameter of 2cm and a thickness of 2.5mm. The sintering conditions are temperature 800°C, holding time 4h, and the atmosphere is air;

[0025] (3) After the pre-sintered product in step (2) is cooled to room temperature, Zr powder is added and ground. Th...

Embodiment 2

[0030] A method for preparing a metal-based ceramic material, the specific steps are as follows:

[0031] (1) According to Fe 60 (Si 3 N 4 ) 6 (BN) 10 Nb 24 The stoichiometric ratio of raw materials Fe and Si were weighed with an electronic scale 3 N 4 , BN, Nb powder, and fully grind for 2 hours to mix;

[0032] (2) Add the binder to the mixed powder in step (1) according to the ratio of binder to mixed powder mass ratio of 1:5, where the binder is absolute alcohol and polyvinyl alcohol PVAL according to the mass ratio 1:3 mixture, mixing, tableting, pre-sintering, the pressure of tableting is 6MPa, and every increase of 2MPa from 0 keeps the pressure for 5min, and finally pressed into a cylindrical shape with a diameter of 1cm and a thickness of 5mm, pre-sintering The conditions are temperature 700°C, holding time 5h, and the atmosphere is air;

[0033] (3) The pre-sintered product in step (2) is cooled to room temperature, then Zr powder is added and ground. The ma...

Embodiment 3

[0038] A method for preparing a metal-based ceramic material, the specific steps are as follows:

[0039] (1) According to Fe 54 (Si 3 N 4 )12 (BN) 10 Nb 24 The stoichiometric ratio of raw materials Fe and Si were weighed with an electronic scale 3 N 4 , BN, Nb powder, and fully grind for 1h to mix;

[0040] (2) Add the binder to the mixed powder in step (1) according to the mass ratio of the binder to the mixed powder at a ratio of 1:3, where the binder is anhydrous ethanol and polyvinyl alcohol PVAL according to the mass ratio 1︰3 mixture, mixing, tableting, pre-sintering, the pressure of tableting is 30MPa, and the pressure is kept for 1min for every increase of 3MPa from 0, and finally pressed into a cylindrical shape with a diameter of 0.6cm and a thickness of 3mm. The sintering conditions are temperature 600°C, holding time 3h, and the atmosphere is air;

[0041] (3) After the pre-sintered product in step (2) is cooled to room temperature, Zr powder is added and ...

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Abstract

Belonging to the technical field of metal ceramic material preparation, the invention discloses a preparation method for a metal matrix ceramic material. The method includes mixing powder and a binder evenly, performing tabletting, then conducting pre-sintering, then adding Zr powder, and carrying out grinding, tabletting and sintering, thus obtaining the metal matrix ceramic material. A scanning electron microscope indicates that a white bone like substance is dielectric ceramic FeNbO4, test data show that the obtained metal matrix ceramic material powder is well combined, the FeNbO4 ceramic reinforced phase improves the bonding strength of the sintered materials, the dislocation extension sensitivity is reduced, the density is high, the porosity is lowered, and industrial application of the material can be promoted to a great extent.

Description

technical field [0001] The invention belongs to the technical field of metal-ceramic material preparation, and in particular relates to a method for preparing metal-based ceramic material. Background technique [0002] With the continuous extension of the application field of materials, metal-based ceramic materials are constantly appearing in the material industry for their application in the material industry due to their high temperature resistance and excellent acousto-optic performance. The research on metal-based ceramic materials has attracted more and more attention, and a multi-disciplinary preparation technology system has gradually formed. When applied to the field of capacitors, the materials are required to have high resistivity and large dielectric constant, among which rutile (TiO 2 ) ceramics and titanium dioxide-containing composite oxide ceramics, but these ceramic materials have the disadvantages of single preparation process, poor economic performance, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/495C04B35/622C04B35/64
CPCC04B35/495C04B35/622C04B35/64C04B2235/94C04B2235/95C04B2235/9607C04B2235/661C04B2235/6567C04B2235/327
Inventor 刘洪喜刘子峰张晓明胡建力周荣
Owner KUNMING UNIV OF SCI & TECH