Preparation method of nano Al2O3/Y3Al5O12/ZrO2 composite powder materials

A y3al5o12, composite powder technology, which is applied in the field of preparation of nano-Al2O3/Y3Al5O12/ZrO2 composite powder materials, can solve the problems of uniform dispersion, particle size and other properties, complex preparation process, and difficult particles of each phase, etc., and achieve technical cost Low cost, simple synthesis process, and high controllability

Inactive Publication Date: 2016-02-03
HARBIN INST OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The present invention is in order to solve existing preparation nano-Al 2 o 3 / Y 3 Al 5 o 12 / ZrO 2 The method of composite powder materials uses a large number of organic substances, the preparation process is complex, the cost is high, the output is low, the particles of each phase are difficult to achieve uniform dispersion, and the particle size and other properties cannot be adjusted. To provide a nano-Al 2 o 3 / Y 3 Al 5 o 12 / ZrO 2 Preparation method of composite powder material

Method used

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  • Preparation method of nano Al2O3/Y3Al5O12/ZrO2 composite powder materials
  • Preparation method of nano Al2O3/Y3Al5O12/ZrO2 composite powder materials

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specific Embodiment approach 1

[0020] Specific embodiment one: this embodiment is a kind of nano-Al 2 o 3 / Y 3 Al 5 o 12 / ZrO 2 The preparation method of composite powder material is specifically carried out according to the following steps:

[0021] 1. Prepare raw material solution: ZrOCl2 ·8H 2 O is dissolved in the alcoholic aqueous solution I to obtain ZrOCl with a concentration of 0.1mol / L~1mol / L 2 ·8H 2 O alcohol aqueous solution; Al(NO 3 ) 3 9H 2 O or Al 2 (SO 4 ) 3 18H 2 O is dissolved in the alcoholic aqueous solution II to obtain an aluminum salt alcoholic aqueous solution with a concentration of 0.1mol / L to 1mol / L; Y 2 o 3 The powder is dissolved in concentrated nitric acid, and dissolved in an oven at 50°C to 120°C until a clear yttrium nitrate solution is obtained. The concentration of the yttrium nitrate solution is 0.1mol / L to 5mol / L; the alcoholic aqueous solution I is composed of alcohols I is mixed with deionized water, and the volume ratio of deionized water and alcohols I...

specific Embodiment approach 2

[0026] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the alcohols I described in step one is isopropanol, methyl alcohol, absolute ethanol or n-butanol; the alcohols described in step one II is isopropanol, methanol, absolute ethanol or n-butanol. Others are the same as the first embodiment.

specific Embodiment approach 3

[0027] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the mass fraction of the concentrated nitric acid in step 1 is 65%-68%. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of nano Al2O3/Y3Al5O12/ZrO2 composite powder materials and relates to a preparation method of nano Al2O3/Y3Al5O12/ZrO2 composite powder materials. The invention aims to solve the technical problem that because a large amount of organic matters are adopted, existing preparation methods of nano Al2O3/Y3Al5O12/ZrO2 composite powder materials are complicated in preparation process, high in cost and low in yield, the uniform dispersion of particles of each phase is difficult to achieve, and the properties such as particle size can not be regulated. The preparation method disclosed by the invention comprises the following steps: 1, preparing raw material solutions; 2, mixing the raw material solutions; 3, coprecipitating the obtained mixture; 4, centrifugalizing, washing and drying the obtained object; and 5, calcinating the obtained product. The method disclosed by the invention is applied to the preparation of nano Al2O3/Y3Al5O12/ZrO2 composite powder materials.

Description

technical field [0001] The present invention relates to a kind of nano Al 2 o 3 / Y 3 Al 5 o 12 / ZrO 2 A method for preparing a composite powder material. Background technique [0002] With the deepening and development of my country's aviation and aerospace technology research, ultra-high temperature structural ceramics have increasingly become a key factor restricting the performance and safety of cutting-edge technical equipment. Al 2 o 3 / Y 3 Al 5 o 12 / ZrO 2 Ternary eutectic nanocomposite ceramics are expected to become a new generation of long-term service materials in high-temperature oxidizing atmospheres due to their ability to maintain good mechanical properties and structural stability in ultra-high temperature oxidizing environments close to the melting point (>1650 °C). Ultra-high temperature materials of construction are preferred. However, due to the problems of poor high-temperature resistance to high-velocity water vapor erosion and brittle fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/44C04B35/48C04B35/626
Inventor 欧阳家虎王志刚喻天罡王玉金刘占国马永辉
Owner HARBIN INST OF TECH
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