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Method for removing carbon from nitride powder

A nitride and powder technology, applied in nitrogen compounds, chemical instruments and methods, inorganic chemistry, etc., can solve problems such as poor carbon removal effect, and achieve the effect of excellent performance

Pending Publication Date: 2019-12-17
GRIREM ADVANCED MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] For this reason, the technical problem to be solved by the present invention is to provide a method for decarbonizing nitride powder to solve the problem of poor carbon removal effect of nitride powder in the prior art

Method used

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  • Method for removing carbon from nitride powder
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  • Method for removing carbon from nitride powder

Examples

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Comparison scheme
Effect test

Embodiment 1

[0024] The method for removing carbon from the nitride powder described in this embodiment comprises the following steps:

[0025] (1) Put 50 g of aluminum nitride powder with a carbon content of 18% obtained by sintering by carbothermal reduction into a corundum crucible, put the corundum crucible into a microwave oven, adjust the power of the microwave oven to 700W, and heat for 60 minutes ;

[0026] (2) After the microwave oven was naturally cooled to room temperature, the sample was transferred to a muffle furnace, and the temperature was raised to 650° C. under air conditions for 5 hours of heat preservation and roasting to obtain aluminum nitride powder.

Embodiment 2

[0028] The method for removing carbon from the nitride powder described in this embodiment comprises the following steps:

[0029] (1) Put 50 g of aluminum nitride powder with a carbon content of 18% obtained by sintering by carbothermal reduction into a corundum crucible, put the corundum crucible into a microwave oven, adjust the power of the microwave oven to 500W, and heat for 120 minutes ;

[0030] (2) After the microwave oven was naturally cooled to room temperature, the sample was transferred to a muffle furnace, and the temperature was raised to 600° C. under air conditions for 10 hours of heat preservation and roasting to obtain aluminum nitride powder.

Embodiment 3

[0032] The method for removing carbon from the nitride powder described in this embodiment comprises the following steps:

[0033] (1) Put 50g of aluminum nitride powder with a carbon content of 10% obtained by sintering by carbothermal reduction into a corundum crucible, put the corundum crucible into a microwave oven, adjust the power of the microwave oven to 1100W, and heat for 20 minutes ;

[0034] (2) After the microwave oven was naturally cooled to room temperature, the sample was transferred to a muffle furnace, and the temperature was raised to 600° C. under the condition of pure oxygen for 10 hours of heat preservation and roasting to obtain aluminum nitride powder.

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Abstract

The invention belongs to the technical field of powder material processing, and particularly relates to a method for removing carbon from nitride powder. According to the method for removing carbon from nitride powder provided by the invention, materials are heated by microwaves, so that carbon powder in the materials absorbs microwaves and is heated and oxidized; meanwhile, aluminum nitride powder keeps a lower temperature due to non-absorption of the microwaves, so that the oxidation process of the surface of the aluminum nitride powder is inhibited; the method can be used for removing carbon from the aluminum nitride powder with the carbon content of 10-30wt% obtained by sintering through a conventional carbothermic reduction method, the obtained aluminum nitride powder is low in oxygencontent and carbon content and better in performance, and the requirement for preparing a high-end heat conduction substrate can be met.

Description

technical field [0001] The invention belongs to the technical field of powder material processing, and in particular relates to a method for removing carbon from nitride powder. Background technique [0002] With the rapid development of modern electronic technology, electronic devices as a whole are developing in the direction of miniaturization, light weight, high integration, high density, high power, and high reliability. At present, my country is accelerating the development of core electronics industries, vigorously improving the independent development capabilities of high-performance integrated circuit products, and cultivating new competitive advantages in the integrated circuit industry. As the structure of electronic devices becomes more and more complex, the size of the substrate will increase and the degree of integration will increase, which will further increase the power dissipation of the substrate, and the heat generated inside the device will increase shar...

Claims

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Application Information

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IPC IPC(8): C01B21/072
CPCC01B21/0728C01P2006/80
Inventor 蒋周青刘荣辉刘元红李楠李彦峰
Owner GRIREM ADVANCED MATERIALS CO LTD
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