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Preparation method of titanium aluminum metal-hexagonal boron nitride ceramic conductive cathode material

A technology of hexagonal boron nitride and cathode material, applied in metal material coating process, ion implantation plating, coating and other directions, can solve the problem of poor conductivity of cathode material, etc., and achieve convenient operation, simple process and high density. Effect

Active Publication Date: 2016-04-20
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 technical problem of poor electrical conductivity of cathode materials prepared by powder metallurgy technology, and to provide a preparation method of titanium aluminum metal-hexagonal boron nitride ceramic conductive cathode materials

Method used

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  • Preparation method of titanium aluminum metal-hexagonal boron nitride ceramic conductive cathode material
  • Preparation method of titanium aluminum metal-hexagonal boron nitride ceramic conductive cathode material

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specific Embodiment approach 1

[0015] Embodiment 1: In this embodiment, the preparation method of titanium aluminum metal-hexagonal boron nitride ceramic conductive cathode material is carried out according to the following steps:

[0016] 1. Mix 60-85% of the metal phase with 15-40% of the ceramic phase according to the mass percentage, and then mix it through a mixer for 1 hour to obtain a mixed powder;

[0017] 2. Pour the mixed powder into the mold, heat the mold, heat it from room temperature to 300°C and keep it warm for 20 minutes, and press it on a 30T forging press to obtain a metal-ceramic composite billet. After cooling with the air, use a forging press to The metal-ceramic composite billet is taken out from the mold and air-cooled to room temperature;

[0018] 3. Put the product of step 2 into a vacuum brazing furnace, and reduce the pressure of the vacuum brazing furnace to 1.0×10 at room temperature -4 Pa, turn on the vacuum heating device for heating, raise the temperature to 1000°C-1100°C a...

specific Embodiment approach 2

[0021] Embodiment 2: This embodiment differs from Embodiment 1 in that the ceramic phase described in step 1 is hexagonal boron nitride ceramics. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0022] Embodiment 3: This embodiment differs from Embodiment 2 in that the average particle size of the hexagonal boron nitride ceramics is 30 mesh. Others are the same as in the second embodiment.

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Abstract

The invention discloses a preparation method for a titanium and aluminum alloy-hexagonal boron nitride ceramic conductive cathode material, and relates to a preparation method of a cathode material. The method aims to solve the technical problem that the cathode prepared by adopting ceramic powder is poor in electrical conductivity. The method comprises the following steps that ceramic phase materials and metal phase materials are mixed and poured into a die, heat treatment is carried out on the die for pressing forming to obtain metal ceramic composite blanks, the metal ceramic composite blanks are taken out from the die through a forging machine after being cooled along with air, air cooling is carried out until indoor temperature is achieved, then the metal ceramic composite blanks are put into a vacuum brazing furnace for turning to obtain blanks with the diameter of 43 mm, the blanks are put into the die again, pressure maintaining is carried out on a 200T forging machine for 20 min, and the titanium and aluminum alloy-hexagonal boron nitride ceramic conductive cathode material is obtained. According to the preparation method for the titanium and aluminum alloy-hexagonal boron nitride ceramic conductive cathode material, the ratio of components is reasonable, the process is simple, and operation is convenient. The preparation method belongs to the field of preparation of cathode materials.

Description

technical field [0001] The invention relates to a method for preparing cathode materials required by arc ion plating equipment. Background technique [0002] With the development of high-tech industries such as aerospace, more and more working environments require friction pairs to work normally and stably for a long time under harsh conditions such as high temperature and high speed. Solid lubricating materials have the advantages of high bearing capacity and good thermal stability. There is a tendency to gradually replace traditional lubricants and greases. The current solid lubricating materials mainly include WS 2 、MoS 2 , but the lubricating material will decompose when the temperature is higher than 400 °C, which limits its application under high temperature conditions. h-BN has good high temperature oxidation resistance and SP similar to graphite 2 structure, exhibits good solid lubricating properties under high temperature and low temperature conditions, so it is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/12C23C14/22
Inventor 王浪平吕文泉王小峰
Owner HARBIN INST OF TECH