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Preparation method of ZrO2-Al2O3 composite ceramics

A technology of composite ceramics and alumina, applied in the field of preparation of metal oxide materials, can solve the problems of complex equipment process, high energy consumption, serious pollution, etc., and achieve the effect of excellent performance and good microstructure

Inactive Publication Date: 2013-06-26
JIANGSU HUAIHE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These traditional methods have disadvantages such as complicated equipment and process, high energy consumption, serious pollution, and high cost.

Method used

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  • Preparation method of ZrO2-Al2O3 composite ceramics

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: prepare composite ceramics according to the following steps

[0019] Step 1: Dissolve 1.3g of butyl zirconate and 0.13g of aluminum chloride in 1.0g of concentrated hydrochloric acid with a mass concentration of 37%, and magnetically stir for 10 minutes to obtain a clear precursor solution, which is spread in a container;

[0020] Step 2: Dissolve 0.25 g of the surfactant sodium stearate and 0.25 g of polyvinylpyrrolidone (PVP) in 18.4 ml of deionized H 2 In O, stir magnetically at 40°C for 15 minutes to obtain a uniformly mixed template solution;

[0021] Step 3: Cool the templating agent solution in step 2 to room temperature 25°C, pour it evenly into the container in step 1, transfer the container to an artificial intelligence climate box with a constant temperature of 21°C, and let it stand for self-assembly for 12 hours to obtain the Zr-Al base colloidal particles;

[0022] Step 4: Dry the colloidal particles in step 3 naturally, and heat-treat at 3...

Embodiment 2

[0023] Embodiment 2: prepare composite ceramics according to the following steps

[0024] Step 1: with step 1 of embodiment 1;

[0025] Step 2: Dissolve 0.25 g of surfactant sodium lauryl sulfonate and 0.25 g of protein in 18.4 ml of deionized H 2 O in 40°C magnetically stirred for 15 minutes to obtain a uniformly mixed template solution;

[0026] Step 3: same as step 3 of Example 1;

[0027] Step 4: Dry the colloidal particles in step 3 naturally, and heat-treat at 400°C for 6 hours to obtain ZrO with mesoporous ordered structure 2 -Al 2 o 3 Composite ceramics.

Embodiment 3

[0028] Embodiment 3: Prepare composite ceramics according to the following steps

[0029] Step 1: with step 1 of embodiment 1;

[0030] Step 2: Dissolve 0.25 g of surfactant dodecylbenzenesulfonic acid and 0.125 g in 16.4 ml of deionized H 2 In O, stir magnetically at 40°C for 15 minutes to obtain a uniformly mixed template solution;

[0031] Step 3 is the same as step 3 in Example 1;

[0032] Step 4: Dry the colloidal particles in step 3 naturally, and heat-treat at 450°C for 5 hours to obtain ZrO with mesoporous ordered structure 2 -Al 2 o 3 Composite ceramics.

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Abstract

The invention discloses a preparation method of ZrO2-Al2O3 composite ceramics, which comprises the following steps that: butyl ester zirconate and aluminium chloride are dissolved in concentrated hydrochloric acid, and hydrolysis and polymerization reaction are taken to produce composite precursors; in a water phase, long-chain hydroxyl surfactants and organic modifying agents form stable template agent solution through the mutual effect of van deer walls force and hydrogen bonds; the composite precursors and the template agent solution are combined through a static self assembly effect to obtain Zr-Al base colloid particles; and the colloid particles are subjected to heat treatment, and the ZrO2-Al2O3 composite ceramics with the ordered structure are formed. The modifying agents prevent the free growth of the colloid particles in the self assembly process through the chemical bounds or molecular acting force and surface active agents, simultaneously, the quality parameters such as dimension, microscopic structures, uniformity, dispersity and the like of the colloid are regulated, the yield of the Zr-Al base colloid particles obtained through self assembly is high, and the ZrO2-Al2O3 composite ceramics obtained through heat treatment on the Zr-Al base colloid particles have good microscopic structures and excellent performance and can be applied to other composite metal oxide nanometer materials.

Description

technical field [0001] The invention belongs to the preparation technology of metal oxide materials, in particular to a preparation method of zirconia and alumina composite ceramics. Background technique [0002] Self-assembly technology refers to the spontaneous formation of a specific ordered structure under certain conditions through chemical bonds or supramolecular interactions between molecules. This is a "bottom-up" preparation technology, that is, atoms, molecules and their aggregates The technology of synthesizing the unit structure of the device to a larger size and then organizing it into a device. Self-assembly technology has the advantages of simple preparation, no need for expensive equipment, and the ability to control the structure and properties of the assembled system at the molecular level. Its research scope is wide, involving many fields such as inorganic materials, polymer materials, and composite materials. [0003] Traditional zirconia and alumina cer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48C04B35/622
Inventor 季红军董云万金方
Owner JIANGSU HUAIHE CHEM
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