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Method for preventing hydrolysis of aluminium nitride

A technology of aluminum nitride and aluminum nitride powder, applied in chemical instruments and methods, nitrogen compounds, inorganic chemistry, etc., can solve the problems of aluminum nitride storage, transportation process difficulties, and phonon scattering to reduce thermal conductivity, etc. To achieve the effect of easy hydrolysis, good effect and easy operation

Inactive Publication Date: 2005-10-26
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because a very small amount of oxygen in the aluminum nitride lattice will produce great phonon scattering and reduce its thermal conductivity, which will bring great difficulties to the storage, transportation and subsequent process of aluminum nitride

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1) Soak 20g of aluminum nitride in 30ml of tetraethoxysilane solution, keep stirring for 15 minutes, and then let it stand for 1 hour; 2) Filter the above mixture, and continuously wash the filtered aluminum nitride powder with ethanol solution 3 times; 3) drying the cleaned aluminum nitride powder to obtain aluminum nitride powder that does not undergo hydrolysis in a humid environment below 100°C.

Embodiment 2

[0016] 1) Soak 50g of aluminum nitride in 100ml of tetraethoxysilane solution, keep stirring for 15 minutes, and then let it stand for 1.5 hours; 2) Filter the above mixture, and wash the filtered aluminum nitride powder continuously with ethanol solution 3 times; 3) drying the cleaned aluminum nitride powder to obtain aluminum nitride powder that does not undergo hydrolysis in a humid environment below 100°C.

Embodiment 3

[0018] 1) Soak 100g of aluminum nitride in 150ml of tetraethoxysilane solution, keep stirring for 15 minutes, and then let it stand for 2 hours; 2) Filter the above mixture, and wash the filtered aluminum nitride powder continuously with ethanol solution 3 times; 3) drying the cleaned aluminum nitride powder to obtain aluminum nitride powder that does not undergo hydrolysis in a humid environment below 100°C.

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PUM

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Abstract

The present invention relates to a method capable of utilizing surface treatment technique to prevent aluminium nitride from hydrolyzing in the damp environment. Said method includes the following steps: firstly, soaking aluminium nitride powder in tetraethoxy-silane solution, then washing the soaked aluminium nitride powder by using ethyl alcohol solution for several times, finally drying the aluminium nitride powder so as to obtain the invented product.

Description

technical field [0001] The invention relates to a new method for preventing the hydrolysis of aluminum nitride, which prevents the hydrolysis of the aluminum nitride powder without affecting the original properties of the aluminum nitride powder, and belongs to the technical field of material ceramics. Background technique [0002] Theoretically, the thermal conductivity of aluminum nitride can reach 320W·m -1 ·K -1 , which is 10 to 15 times that of the traditional substrate material alumina. Moreover, it has good electrical insulation, low dielectric loss, stable thermal and chemical properties, and a similar thermal expansion coefficient to Si. It is an ideal heat dissipation material and packaging material for large-scale integrated circuits, semiconductor module circuits, and high-power devices. Aluminum nitride also has non-wetting properties with many non-ferrous metals and their alloys such as Al, and can be used as a melting bath and crucible. In addition, aluminu...

Claims

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Application Information

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IPC IPC(8): C04B35/626
Inventor 顾明元李玮
Owner SHANGHAI JIAO TONG UNIV
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