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A vacuum cathode arc source device and method for depositing a coating

A cathodic arc and arc source technology, which is applied to the vacuum cathode arc source device and the coating deposited on the inner surface of the nozzle of the orbit attitude control engine, and the field of the two-component liquid rocket orbit/attitude control engine. Performance requirements and other issues to achieve the effects of prolonging life, optimizing deposition process optimization, and good adhesion

Active Publication Date: 2020-04-10
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The engine operating temperature of this coating system and preparation method is below 1400°C, which cannot meet the high performance requirements of the new generation of engines

Method used

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  • A vacuum cathode arc source device and method for depositing a coating
  • A vacuum cathode arc source device and method for depositing a coating
  • A vacuum cathode arc source device and method for depositing a coating

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Effect test

preparation example Construction

[0051] The preparation method of vacuum cathode arc source of the present invention deposits coating on the inner surface of engine nozzle, specifically comprises the following steps:

[0052] (1) if image 3 Shown is the schematic diagram of the arc source of the arc deposition cathode on the inner surface of the engine nozzle of the present invention from the straight line to the throat position; 2. The arc spot movement on the surface of the cathode target is controlled by an electromagnetic field, and the current waveform adopts a triangular wave with an amplitude of 0.2-15A and a frequency of 1-5Hz. The distance and height of the arc spot moving on the target surface can be realized by adjusting the amplitude of the current, and the speed and etching time of the arc spot moving up and down on the cathode target surface can be controlled by controlling the frequency of current change. 3. The cathode target is designed as a hollow nozzle imitating cylindrical conical targe...

Embodiment 1

[0064] Such as figure 1 shown, in order to manufacture an engine nozzle with a size of ( is the minimum inner diameter of the engine nozzle, and 100mm is the total length of the engine nozzle) as an example, the Mo-W alloy coating is deposited on the inner surface of the engine nozzle.

[0065] (a) Engine nozzle preparation: process the engine nozzle according to the drawing requirements of the engine nozzle Such as figure 1 , After the processing is completed, degrease and derust the inner and outer surfaces of the engine nozzle, mainly by pickling and acetone ultrasonic cleaning, and wait for the deposition of the coating after drying.

[0066] (b) Preparation of engine nozzle Mo-W alloy coating;

[0067] It uses the following steps to prepare a Mo-W alloy coating on the inner surface of the engine nozzle:

[0068] (1) Process two Mo-W alloy (Mo:W=80:20% by weight) cathode targets 1 according to the drawing size, such as figure 2 , are the Mo-W alloy target used fr...

Embodiment 2

[0079] To manufacture an engine nozzle size of ( Be the minimum inner diameter of the engine nozzle, 200mm is the total length of the engine nozzle) as an example, the iridium coating is deposited on the inner surface of the engine rhenium nozzle, and the specific implementation of the method of the present invention is described.

[0080] (a) Engine rhenium nozzle preparation: process the engine nozzle according to the drawing requirements of the engine rhenium nozzle Such as figure 1 After the processing is completed, degrease and derust the inner and outer surfaces of the rhenium nozzle of the engine, mainly by pickling and ultrasonic cleaning with acetone, and wait for the coating to be deposited after drying.

[0081] (b) Preparation of iridium coating for engine rhenium nozzle:

[0082] It uses the following steps to prepare an iridium coating on the inner surface of the engine nozzle:

[0083] (1) Process the profiling iridium (99.98at.%) cathode internal target ...

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Abstract

The invention relates to a vacuum cathode arc source device and a method of depositing a coating on the inner surface of an engine jet pipe of a rocket, in particular to the vacuum cathode arc sourcedevice and a method of depositing the coating on the inner surface of an in-orbit attitude control engine jet pipe, which can be applied to a double component liquid rocket rail / a attitude control engine of an aerospace craft. A protective coating is deposited on the inner surface of the in-orbit attitude control engine jet pipe by means of a vacuum cathode arc ion depositing method, and different coatings can be deposited as needed, for example, pure metal coatings (an iridium coating, a rhenium coating, a niobium coating and a molybdenum coating) and alloy coatings (a platinum-rhodium coating, a Mo-W coating and MCrAlYSiB coating). The working performance of the in-orbit attitude control engine is improved.

Description

technical field [0001] The invention relates to a vacuum cathode arc source device and a method for depositing a coating on the inner surface of a rocket engine nozzle, in particular to a vacuum cathode arc source device and a method for depositing a coating on the inner surface of an orbital attitude control engine nozzle. A dual-component liquid rocket orbit / attitude control engine that can be applied to aerospace vehicles. Background technique [0002] Bicomponent liquid propellant orbital attitude control engine is an important part of modern space vehicles and strategic and tactical weapons, and is widely used in orbital control and attitude adjustment. [0003] In recent years, the development of new aircraft or weapons has continuously increased the requirements for engine performance. It is required to increase the specific impulse and increase the chamber pressure, thereby reducing the consumption of propellant and reducing the weight of the engine, as well as prolo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/32C23C14/02C23C14/04C23C14/16
CPCC23C14/021C23C14/046C23C14/16C23C14/325
Inventor 李海庆陈道勇徐方涛闫旭波张绪虎贾中华
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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