Process for preparation of high-temperature protecting coating by vacuum arc deposition

A vacuum arc and protective coating technology, applied in vacuum evaporation plating, coating, metal material coating technology and other directions, can solve the problems of engineering application limitation, low energy density, high operating cost, and achieve high utilization rate, The effect of reducing energy consumption and increasing production efficiency

Inactive Publication Date: 2005-04-20
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large investment in the process equipment, high operating costs, and low production efficiency, its engineering application is limited.
The magnetron sputtering process belongs to glow discharge, its energy density is relatively low, and it has no advantage compared with EB-VD

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 NiCrAlY alloy coating

[0040] Ion cleaning:

[0041] Vacuum degree: P-2 Pa

[0042] Arc current: 400-600A

[0043] Workpiece voltage: 200-300v

[0044] Cleaning time: 2-6min

[0045] Deposition coating:

[0046] Vacuum degree: P-2 Pa

[0047] Arc current: 600-800A

[0048] Arc voltage: 30-50V

[0049] Deposition time: 2-5h

[0050] Vacuum annealing:

[0051] Vacuum degree: P-1 Pa

[0052] Temperature: 1000-1200℃

[0053] Time: 3-5h.

[0054] Coating thickness: 50-70μm.

[0055] Uses: Used for high temperature oxidation resistance and serious corrosion protection below 1150 °C.

Embodiment 2

[0056] Example 2 AlSiY diffusion alloyed coating

[0057] Ion cleaning:

[0058] Vacuum degree: P-2 Pa

[0059] Arc current: 400-600A

[0060] Workpiece voltage: 200-300V

[0061] Cleaning time: 2-6min

[0062] Deposition coating:

[0063] Vacuum degree: P-2 Pa

[0064] Arc current: 400-700A

[0065] Arc voltage: 30-50V

[0066] Deposition time: 1-3h

[0067] Vacuum annealing:

[0068] Vacuum degree: P-1 Pa

[0069] Temperature: 1000-1100℃

[0070] Time: 3-5h

[0071] Coating thickness: 20-50μm.

[0072] Uses: Used for high temperature oxidation and corrosion protection below 1100 °C.

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Abstract

A method for preparing high temperature protective coat by vacuum arc plating contains that, converting conductive cathode alloy coat material into plasma beam stream under vacuum condition and accelerated moving toward piece surface agglomerating to form coat, then vacuum annealing to obtain said coat.

Description

Technical field: [0001] The invention relates to high-temperature protection technology, and in particular provides a method for preparing a high-temperature protection coating by vacuum arc plating. Background technique: [0002] For turbomachinery represented by aero-engines, the protection level of its hot-end components determines its development. With the development of aero-engines towards high thrust-to-weight ratio and high-performance, the temperature of the starting gas continues to increase. Advanced aero-engine turbines The inlet temperature has reached 2000K, and the heat resistance of the alloy matrix of the hot-end parts is close to the extreme. Therefore, the development and application of high-temperature protective coatings represent the level of aero-engines to some extent. [0003] At present, the preparation methods of high-temperature protective coatings can be roughly divided into two categories: thermal spraying (PS) and physical vapor deposition (PVD...

Claims

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Application Information

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IPC IPC(8): C23C14/30
Inventor 赵维勋张鹏付裕李长伟常秋梅
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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