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Method for preparing flaky AlON/ZrC composite material

A composite material and sheet-like technology, applied in the field of sheet-like AlON/ZrC composite materials, can solve the problems of low flexural strength and achieve the effects of high strength, excellent oxidation resistance and good machinability

Inactive Publication Date: 2014-03-26
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the machinable ceramic materials prepared by the usual hybrid and chemical h-BN coating technology have low flexural strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The flaky AlON powder with a particle size of 2 μm and the ZrC ceramic powder with a particle size of 1 μm are uniformly mixed at a weight ratio of 10:100, and hot-pressed and fired at 1600 ° C for 30 minutes in an argon atmosphere to form a flaky AlON / ZrC composite. materials, wherein the flaky AlON powder is AlN and Al 2 o 3 The molar ratio is 2.

Embodiment 2

[0012] The flaky AlON powder with a particle size of 1 μm and the ZrC ceramic powder with a particle size of 3 μm were uniformly mixed at a weight ratio of 30:100, and hot-pressed and fired at 1800 ° C for 110 minutes in an argon atmosphere to make a flaky AlON / ZrC composite material , where the flaky AlON powders are AlN and Al 2 o 3 The molar ratio is 3.5.

Embodiment 3

[0014] The flaky AlON powder with a particle size of 3 μm and the ZrC ceramic powder with a particle size of 3 μm are uniformly mixed at a weight ratio of 50:100, and hot-pressed and fired at 2000 ° C for 180 minutes in an argon atmosphere to form a flaky AlON / ZrC composite materials, wherein the flaky AlON powder is AlN and Al 2 o 3 The molar ratio is 5.

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Abstract

A method for preparing a flaky AlON / ZrC composite material is characterized in that flaky AlON powder and ZrC ceramic powder are uniformly mixed with the weight ratio of (10-50):100 and fired in argon gas atmosphere in a hot-pressing manner for 30-180 min at 1,600-2,000 DEG C to manufacture the flaky AlON / ZrC composite material. The flaky AlON / ZrC composite material prepared by the method has machinability, the flaky AlON and ZrC are uniform in phase distribution and controllable in content, and the machinability, the mechanical property and the thermal property are favorable.

Description

technical field [0001] The invention relates to a sheet-like AlON / ZrC composite material, which belongs to the technical field of ceramic preparation. Background technique [0002] Ceramic materials have many excellent properties. However, due to the high hardness of ceramic materials, when preparing precision-sized ceramic parts, they can only be ground by diamond abrasive grinding wheels, and the manufacturing cost is very high. Therefore, people have been looking for a method that can not only meet the requirements of basic mechanical properties, but also obtain precision-sized ceramic parts by machining. In the 1990s, Japanese scholar Niihara and others adopted Si 3 N 4 Particle-coated h-BN prepared high-strength machinable ceramic parts, which opened up a new way for the preparation of high-performance machinable ceramic parts; in 2002, Li Yongli et al. 2 o 3 The analytical reagent CO(N 2 ) 2 and H 3 BO 3 Mixed at a molar ratio of 1:4, fully ground in a mortar,...

Claims

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Application Information

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IPC IPC(8): C04B35/56C04B35/622
Inventor 唐竹兴
Owner SHANDONG UNIV OF TECH
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