Method for realizing MCrAlX protective coating through ion plating deposition and device

A protective coating, ion plating technology, applied in the direction of ion implantation plating, coating, metal material coating process, etc., can solve problems such as the inability to meet the long-term stable operation of industrial production, anode pollution, etc., to achieve low loss, avoid Pollution, the effect of increasing the furnace load

Active Publication Date: 2014-08-06
成都航大新材料有限公司
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Problems solved by technology

However, this method still has the problem of anode pollution, which cannot meet the requirements of long-term stable work in industrial production.

Method used

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  • Method for realizing MCrAlX protective coating through ion plating deposition and device
  • Method for realizing MCrAlX protective coating through ion plating deposition and device
  • Method for realizing MCrAlX protective coating through ion plating deposition and device

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] figure 1 It is a schematic diagram of the principle of using Nb molten pool to improve the thermionic emission ability of MCrAlX evaporation. When the target is melted and evaporated, the upper Nb molten pool emits a large number of thermal electrons, and the lower MCrAlX melts and passes through the Nb molten pool to generate a large amount of metal vapor. Taking the MCrAlX target with a diameter of 70mm as an example, 150-180g of Nb needs to be placed on it.

[0026] The MCrAlX coating deposition process described in the present invention needs to be realized by at least two MCrAlX evaporation crucibles with Nb molten pools, and the two evaporation crucibles are respectively connected to the two poles of the AC arc source. Under the action of the AC arc source, the metal vapor generated by the two evaporator crucibles alternately acts as the ...

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Abstract

The invention discloses a method for realizing a MCrAlX protective coating through physical vapor deposition of electron beams activated by plasmas in a vacuum environment and a device for realizing the method. The method comprises the steps of arranging at least two crucibles with MCrAlX targets in a vacuum cavity, and placing a proper amount of metal Nb above the targets; bombarding the two crucibles by using an electronic gun to melt the metal Nb and evaporate the MCrAlX targets. A high-temperature molten pool formed by the metal Nb emits a great number of hot electrons and MCrAlX steam under the action of an alternating current arc source, the hot electrons and the MCrAlX steam act together to trigger a hot cathode arc to discharge to form high-density MCrAlX plasma steam, and the two crucibles are alternately used as an anode and a cathode in the process. The plasma steam is deposited under the action of bias voltage of a base plate to form a MCrAlX coating, and the base plate can be preheated through radiation in a coating process.

Description

technical field [0001] The present invention relates to a method for realizing ion plating and depositing MCrAlX protective coating and a device for realizing the above method, more specifically a method for realizing plasma-activated electron beam physical vapor deposition of MCrAlX protective coating in a vacuum environment and its realization Apparatus for the method described above. The method is suitable for high-speed and stable deposition of MCrAlX protective coatings, and is especially suitable for preparing MCrAlX protective coatings on the surface of gas turbine engine hot end components (such as high-pressure turbine blades, guide vanes and integral blisks, etc.). The method is also applicable to the preparation of other multi-element alloy coatings. Background technique [0002] For modern gas turbine engines, one of the main means to improve their working efficiency is to increase the combustion operating temperature of the engine as a whole. Therefore, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/30C23C14/06
Inventor 彭徽郭洪波宫声凯徐惠彬
Owner 成都航大新材料有限公司
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