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Preparation method of amorphous silicon boron-carbon-nitrogen-aluminum powder material

A silicon-boron-carbon-nitride-aluminum powder material technology, which is applied in the field of silicon-boron-carbon-nitride aluminum powder preparation, can solve problems such as complex process, difficult control, and low output, and achieve simple preparation process, low cost, and high output Effect

Inactive Publication Date: 2011-09-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of high cost, complex process, difficult control and low yield in the existing method for preparing silicon boron carbon nitride aluminum material, and to provide a preparation of amorphous silicon boron carbon nitrogen aluminum powder material method

Method used

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  • Preparation method of amorphous silicon boron-carbon-nitrogen-aluminum powder material

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specific Embodiment approach 1

[0011] Specific embodiment one: the preparation method of the amorphous silicon boron carbon nitrogen aluminum powder material of this embodiment is carried out according to the following steps: one, take the cubic silicon powder (c-Si) that purity is 99%~99.9%, purity is 98 % to 99.9% hexagonal boron nitride (h-BN), graphite (C) with a purity of 99% to 99.9%, and aluminum nitride powder (AlN) with a purity of 98% to 99.9% as raw materials. The molar ratio is Si: BN: C: AlN=1: 0.5: 1.5: 0.3; 2. In the glove box, put the weighed raw materials and silicon nitride grinding balls into a silicon nitride ball mill jar together, and the silicon nitride After the ball mill tank is sealed, take it out from the glove box, and then install it on a planetary ball mill for ball milling for 10-100 hours, then put the silicon nitride ball mill tank in the glove box to take powder, and the powder taken out is amorphous silicon borocarbon nitrogen Aluminum powder;

[0012] Wherein the particl...

specific Embodiment approach 2

[0014] Specific embodiment two: the difference between this embodiment and specific embodiment one is that in step one, it is also possible to weigh cubic silicon powder with a purity of 99% to 99.9%, hexagonal boron nitride with a purity of 98% to 99.9%, and 99%-99.9% graphite and 99%-99.9% pure aluminum powder (Al) are raw materials, wherein the molar ratio of each raw material is Si:BN:C:Al=1:0.5:1.5:0.3. Other steps and parameters are the same as in Embodiment 1

specific Embodiment approach 3

[0015] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in step 2, it is installed on a planetary ball mill for ball milling for 10 hours. Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The invention relates to a preparation method of an amorphous silicon boron-carbon-nitrogen-aluminum powder material, relating to a preparation method of a silicon-boron-carbon-nitrogen-aluminum powder material and solving the problems of high cost, complex process, difficult control and low yield of the traditional method for preparing a boron-carbon-nitrogen-aluminum material. The method comprises the following steps of: 1, weighing cubic silicon powder, hexagonal boron nitride, graphite and aluminum nitride powder (or metallic aluminum powder) as raw materials; 2 placing the weighed raw materials and silicon nitride grinding balls into a silicon nitride ball-milling jar together in a glove box, sealing, then taking out of the glove box, installing on a ball mill for ball-milling, and after the ball-milling is completed, placing the silicon nitride ball-milling jar into the glove box for powder taking, wherein the taken powder is amorphous silicon boron-carbon-nitrogen-aluminum powder. The amorphous silicon boron-carbon-nitrogen-aluminum powder material is prepared by using a mechanical alloying method, thus the invention has the advantages of simple preparation process, easy process control, low cost, high yield, suitability for industrialized production, and the like.

Description

technical field [0001] The invention relates to a preparation method of silicon boron carbon nitrogen aluminum powder. Background technique [0002] High-temperature structural materials are key materials in the fields of aviation, aerospace, energy, chemical industry, machinery, and metallurgy. Especially with the development of aerospace technology, the requirements for high-temperature structural materials such as the nose cone cap, wing leading edge, rudder surface, cover plate and nozzle of the spacecraft are becoming more and more stringent. Oxidation, low density, high reliability and other characteristics. As a new type of high-temperature structural material, silicon-boron-carbon-nitride ceramics endow the material with high thermal stability, oxidation resistance and creep resistance due to the existence of more covalent bond structures. However, if silicon boron carbon nitrogen ceramics prepared by organic precursors are oxidized at 1500°C for more than 24 hours...

Claims

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Application Information

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IPC IPC(8): C04B35/515C04B35/626
Inventor 贾德昌叶丹杨治华段小明周玉孟庆昌张培峰
Owner HARBIN INST OF TECH
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