Method for preparing zirconium carbide ceramic powder

A technology of ceramic powder and zirconium carbide, which is applied in the field of preparation of zirconium carbide ceramic powder, can solve the problems of high cost, high energy consumption, long synthesis time, etc. the effect of growing up

Active Publication Date: 2013-02-13
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that if the traditional heat treatment method is adopted, the required synthesis time is long, the energy consumption is large, and the cost is high

Method used

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  • Method for preparing zirconium carbide ceramic powder
  • Method for preparing zirconium carbide ceramic powder
  • Method for preparing zirconium carbide ceramic powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033](1) Dissolve 8g of sucrose in 50mL of solvent acetic acid at a temperature of 85°C, and cool the resulting solution to room temperature to obtain a carbon source solution (used as a carbon source); mix 8mL of zirconium n-propoxide with 24mL of diluent n-propanol After dilution, place it in a constant temperature water bath at 25°C and stir for 20 minutes, add 3 mL of chelating agent acetic acid to the mixture, and stir for 15 minutes to make it evenly mixed to obtain a zirconium n-propoxide mixture; press zirconium n-propoxide The substance mass ratio with sucrose is 12:4.4. Measure the carbon source solution, and dilute it with 40mL of n-propanol to obtain a carbon source mixed solution; Stir at 25°C for 2 days and mix well. After aging for 1 day, a dark red gel was obtained, then dried in a drying oven at 150°C for 48 hours, and dry-milled for 1 hour to obtain xerogel powder.

[0034] (2) The dry gel powder was heat-treated in a tube furnace under the protection of arg...

Embodiment 2

[0038] (1) Dissolve 7.5g of sucrose in 50mL of solvent acetic acid at a temperature of 75°C, and cool the resulting solution to room temperature to obtain a carbon source solution (used as a carbon source); mix 8mL of zirconium n-propoxide with 16mL of diluent n-propyl After diluting with alcohol, place it in a constant temperature water bath at 30°C and stir for 20 minutes, add 2 mL of chelating agent acetic acid to the mixture, and stir for 15 minutes to make it evenly mixed to obtain a zirconium n-propoxide mixture. Measure the carbon source solution according to the mass ratio of zirconium n-propoxide and sucrose as 12:4, and dilute it with 16mL of n-propanol to obtain a carbon source mixed solution; then add the carbon source mixed solution dropwise to the zirconium n-propoxide stirred at high speed In the mixture, stir for 2 days at 25°C and mix well. After 3 days of aging, a dark red gel is obtained, then dried in a drying oven at 80°C for 48 hours, and dry ground for 2 ...

Embodiment 3

[0042] (1) Dissolve 7g of sucrose in 50mL of solvent acetic acid at a temperature of 80°C, and cool the resulting solution to room temperature to obtain a carbon source solution (used as a carbon source); mix 8mL of zirconium n-propoxide with 8mL of diluent n-propanol After dilution, place it in a constant temperature water bath at 25°C and stir for 20 minutes, add 2 mL of chelating agent acetic acid to the mixed solution, and stir for 15 minutes to make it evenly mixed to obtain a zirconium n-propoxide mixed solution. Measure the carbon source solution according to the mass ratio of zirconium n-propoxide and sucrose as 12:4.6, and dilute it with 24mL of n-propanol to obtain a carbon source mixed solution; then add the carbon source mixed solution dropwise to the zirconium n-propoxide stirred at high speed In the mixture, stir at 30°C for 1 day and mix well. After 2 days of aging, a dark red gel is obtained, then dried in a drying oven at 80°C for 48 hours, and dry ground for 1...

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Abstract

The invention relates to a method for preparing the zirconium carbide ceramic powder. The method is characterized by comprising material selection: selecting normal propyl alcohol zirconium, cane sugar, thinner normal propyl alcohol and chelating agent acetic acids according to a mass ratio of the normal propyl alcohol zirconium and the cane sugar in a range from (12:3.6) to (12:4.6) and a volume ratio of the normal propyl alcohol zirconium, thinner normal propyl alcohol and the chelating agent acetic acids in a range from (8:32:2) to (8:64:3); and selecting solvent acetic acids according to a proportion of the cane sugar and the chelating agent acetic acids of (7-8)g:50mL; dry gel powder preparation; precursor powder preparation; and precursor powder heat treatment to obatin zirconium carbide ceramic powder. According to the method, the problem that the oxygen content in the zirconium carbide powder is generally high is effectively solved, and the zirconium carbide powder of high purity and fine crystal particles is obtained; and an independent graphite mould exists, so that synthesis of zirconium carbide powder and preparation of other materials in a hot-pressing mold can be performed simultaneously, heat supply is achieved, and the energy consumption is greatly decreased.

Description

technical field [0001] The invention relates to a preparation method of zirconium carbide ceramic powder. Background technique [0002] Zirconium carbide (ZrC) is a research hotspot of non-oxide ceramic materials in recent years. ZrC belongs to transition metal carbide, which has excellent properties such as high hardness, strong wear resistance, low thermal expansion rate, high thermal conductivity, and high electrical conductivity. Compared with other transition metal carbides such as silicon carbide, ZrC has more excellent chemical and physical properties. Zirconium carbide ceramic powder is an extremely important new engineering ceramic raw material. Its excellent characteristics make it have a large application space in cemented carbide, which can improve the strength and corrosion resistance of cemented carbide. Zirconium carbide is the raw material for the production of atomic-level zirconium sponge, and can be used as an additive for advanced refractory materials. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/56C04B35/626
Inventor 傅正义解晶晶张帆王玉成卢常勇王为民王皓张金咏
Owner WUHAN UNIV OF TECH
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