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Method for preparing Gd2Zr2O7 transparent ceramic

A technology of transparent ceramics and ceramics, applied in the field of ceramic materials, can solve the problems of complex operation process and affecting process repeatability.

Pending Publication Date: 2020-02-14
HUNAN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-temperature vacuum environment brings many process control problems to the preparation process, and the operation process is often very complicated, which will inevitably affect the repeatability of the process
The present invention intends to report the use of a conventional muffle furnace (low cost, strong operability), sintering in an air atmosphere, and then post-processing by hot isostatic pressing to achieve Gd 2 Zr 2 o 7 The preparation of transparent ceramics has not been reported before, and it can be used for Gd 2 Zr 2 o 7 The low-cost preparation of transparent ceramics provides new ideas and new breakthroughs

Method used

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  • Method for preparing Gd2Zr2O7 transparent ceramic
  • Method for preparing Gd2Zr2O7 transparent ceramic
  • Method for preparing Gd2Zr2O7 transparent ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation of Gd 2 Zr 2 o 7 The method for transparent ceramics is characterized in that it comprises the following steps:

[0026] Step 1: Weigh Gd 2 o 3 , ZrO 2 A total of 50 grams of raw materials, with YF 3 The powder is a sintering aid and is reserved for use. in:

[0027] The Gd 2 o 3 , ZrO 2 The masses of are respectively 29.75 grams and 20.25 grams;

[0028] The YF 3 The mass of powder is Gd 2 o 3 , ZrO 2 0.1% (ie 0.05 g) of the total mass of the powder;

[0029] Step 2: Mix the above three powders and pour them into a nylon tank together, then add pure water and dispersant in turn, and perform ball milling to obtain a slurry. in:

[0030] The mass ratio of the pure water to the mixed powder is 1:1 (ie 50 grams);

[0031] The dispersant is commercially available byk190, and the added amount is 0.5% (that is, 0.25 g) of the raw material mass.

[0032] The ball mill mixing refers to the method of adopting planetary ball mill treatment, the ba...

Embodiment 2

[0040] A preparation of Gd 2 Zr 2 o 7 The method for transparent ceramics is characterized in that it comprises the following steps:

[0041] Step 1: Weigh Gd 2 o 3 , ZrO 2 A total of 50 grams of raw materials, with YF 3 The powder is a sintering aid and is reserved for use. in:

[0042] The Gd 2 o 3 , ZrO 2 The masses of are respectively 29.75 grams and 20.25 grams;

[0043] The YF 3 The mass of powder is Gd 2 o 3 , ZrO 2 0.2% (ie 0.10 g) of the total mass of the powder;

[0044] Step 2: Mix the above three powders and pour them into a nylon tank together, then add pure water and dispersant in turn, and perform ball milling to obtain a slurry. in:

[0045] The mass ratio of the pure water to the mixed powder is 2:1 (i.e. 100 grams);

[0046] The dispersant is commercially available byk190, and the added amount is 0.5% (that is, 0.25 g) of the raw material mass.

[0047] The ball mill mixing refers to the method of adopting planetary ball mill treatment, the...

Embodiment 3

[0055] A preparation of Gd 2 Zr 2 o 7 The method for transparent ceramics is characterized in that it comprises the following steps:

[0056] Step 1: Weigh Gd 2 o 3 , ZrO 2 A total of 50 grams of raw materials, with YF 3 The powder is a sintering aid and is reserved for use. in:

[0057] The Gd 2 o 3 , ZrO 2 The masses of are respectively 29.75 grams and 20.25 grams;

[0058] The YF 3 The mass of powder is Gd 2 o 3 , ZrO 2 0.5% (ie 0.25 grams) of the total mass of the powder;

[0059] Step 2: Mix the above three powders, pour them into a nylon tank, add absolute ethanol, and perform ball milling to obtain a slurry. in:

[0060] The mass ratio of the described absolute ethanol to the mixed powder is 2:1 (i.e. 100 grams);

[0061] The ball mill mixing refers to the method of adopting planetary ball mill treatment, the ball mill speed is controlled at 100r / m, and the ball mill time is 30h.

[0062] Step 3: Making a green body A by dry molding. The specific is ...

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Abstract

The invention discloses a method for preparing Gd2Zr2O7 transparent ceramic. A conventional muffle furnace is adopted for sintering in air atmosphere, and hot isostatic pressing post-treatment is performed to achieve the preparation of the Gd2Zr2O7 transparent ceramic having high optical transmittance. The conventional muffle furnace is adopted for sintering in the air atmosphere, the hot isostatic pressing post-treatment method is adopted, and the operation process is simple. Moreover, the conventional muffle furnace is low in sintering cost in the air atmosphere and suitable for applicationand popularization, and the prepared Gd2Zr2O7 transparent ceramic has high transmittance.

Description

Technical field: [0001] The invention relates to the field of ceramic materials, in particular to a method for preparing Gd 2 Zr 2 o 7 method for transparent ceramics. Background technique: [0002] Gd 2 Zr 2 o 7 Transparent ceramics is a cubic crystal material with isotropic optical properties. Therefore, the powder particles can be densely arranged and stacked by ceramic sintering to prepare a transparent polycrystalline structure. Transparent Gd 2 Zr 2 o 7 Ceramics, with excellent optical properties, can be used in high-energy physics, medical detection systems, etc. [0003] Currently Gd 2 Zr 2 o 7 Transparent ceramics are mainly prepared by vacuum hot pressing, vacuum sintering and other methods. The high-temperature vacuum environment brings many process control problems to the preparation process, and the operation process is often very complicated, which will inevitably affect the repeatability of the process. The present invention intends to report the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622C04B35/64
CPCC04B35/48C04B35/622C04B35/64C04B2235/3224C04B2235/445C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/6583C04B2235/661C04B2235/9653
Inventor 谢忠祥刘海艳
Owner HUNAN INST OF TECH
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