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Aluminum oxide/alumina titanate ceramica composite material and preparation thereof

A technology of ceramic composite material and aluminum titanate, which is applied in the field of ceramic composite material and its preparation, can solve the problems of complex preparation process, easy decomposition of aluminum titanate and high sintering temperature, and achieves simple preparation process, uniform structure and excellent performance. Effect

Inactive Publication Date: 2009-01-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of complex preparation process, high sintering temperature, long time consumption, low product density, poor performance and easy decomposition of aluminum titanate in the existing alumina / aluminum titanate ceramic composite material, and provide an oxidation Aluminum / aluminum titanate ceramic composite material and preparation method thereof

Method used

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  • Aluminum oxide/alumina titanate ceramica composite material and preparation thereof
  • Aluminum oxide/alumina titanate ceramica composite material and preparation thereof

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specific Embodiment approach 1

[0010] Specific Embodiment 1: In this embodiment, the alumina / aluminum titanate ceramic composite material is made of 1 part of mixed powder, 0.4-1 part of deionized water and 0.01-0.015 part of binder according to the ratio of parts by mass; the mixed powder The body is composed of 50% to 99% of nano-alumina and 1% to 50% of nano-titanium oxide by mass percentage; the binder is polyvinyl alcohol, polyethylene, polypropylene, polystyrene, methyl cellulose, carboxy Methylcellulose, polyoxyethylene or hydroxyethylcellulose.

specific Embodiment approach 2

[0011] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the alumina / aluminum titanate ceramic composite material is made of 1 part of mixed powder, 0.7 part of deionized water and 0.012 part of binder according to the ratio of parts by mass. to make. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0012] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the mixed powder is composed of 60%-97% nano-alumina and 3%-40% nano-titanium oxide by mass percentage. Others are the same as in the first or second embodiment.

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Abstract

Disclosed is an alumina / aluminum titanate ceramic composite material and a preparation method thereof, relating to a ceramic composite material and a preparation method thereof. The preparation method solves the problems that the preparation process of the present alumina / aluminum titanate ceramic composite material is complicated, the sintering temperature is high, long time is consumed, the density of the product is low, the performance of the product is poor and the aluminum titanate is decomposed easily. The alumina / aluminum titanate ceramic composite material is prepared by mixed powders, deionized water and a binder, wherein, the mixed powders are composed of nanometer alumina and nanometer titanium oxide. The preparation method is as follows: firstly, weighting raw materials, and mixing the materials to obtain a slurry; secondly, re-granulation to the slurry for obtaining a nano-composite powder; thirdly, heat treatment to the nano-composite powder; and fourthly, insulating and sintering the nano-composite powder obtained after the heat treatment to gain the alumina / aluminum titanate ceramic composite material. The preparation method is simple, the sintering temperature is low, short time is consumed, aluminum titanate in the product is not decomposed, the density of the product is high and the performance of the product is good.

Description

technical field [0001] The invention relates to a ceramic composite material and a preparation method thereof. Background technique [0002] With the rapid development of science and technology, especially the development of energy and space technology, the requirements for material properties are also getting higher and higher. The alumina / aluminum titanate ceramic composite material has been widely used in the field of ceramic materials due to its characteristics of wear resistance, corrosion resistance and oxidation resistance, but the preparation process of the existing alumina / aluminum titanate ceramic composite material is complicated. Because it is produced by solid-state reaction between micron-sized alumina and titanium oxide powders, the sintering temperature used is as high as 1500-1700°C, resulting in a long time-consuming (more than 1 hour) and low density of the obtained product ( Less than 95%), poor performance, manifested in poor thermal shock resistance an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/462C04B35/632
Inventor 王铀杨勇赵玥
Owner HARBIN INST OF TECH
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