Novel laser gyro cathode for growing graphene based on surface CVD method

A laser gyroscope, graphene technology, applied in the direction of graphene, Sagnac effect gyroscope, gyroscope/steering sensing device, etc. Accuracy requirements, sealing stability and poor air tightness, etc., to achieve the effect of reducing cathode sputtering, reducing the effect of gas scavenging, and good sealing performance

Active Publication Date: 2020-08-11
湖南二零八先进科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006]There are two major defects in the metal aluminum cathode: 1. Because the expansion coefficient is 1000 times different from that of glass ceramics, the problem of thermal mismatch is serious; 2. When indium is sealed with indium and Poor wettability and adhesion of metal aluminum
The existing sealing process is difficult and difficult to implement; the sealing stability and airtightness are poor, and the sealing performance cannot meet the needs of high precision

Method used

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  • Novel laser gyro cathode for growing graphene based on surface CVD method
  • Novel laser gyro cathode for growing graphene based on surface CVD method
  • Novel laser gyro cathode for growing graphene based on surface CVD method

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Experimental program
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Embodiment 1

[0057] Embodiment one: a novel glass-ceramics laser gyro cathode based on surface CVD method growth graphene, comprising

[0058] 1. Glass-ceramic cathode surface polishing

[0059] Select SiO with nanoscale particle size 2 The sol is a polishing liquid, and it is polished for 5 hours in a polishing disc with a rotating speed of 20-30r / min, so that the surface roughness of the glass-ceramic is R a up to 0.3nm.

[0060] 2. Cleaning of glass-ceramics

[0061] RCA (Radio Corporation of America) wet chemical cleaning process is adopted.

[0062] (1) Submerge the glass-ceramic in acetone and heat it to 50°C for ultrasonic cleaning for 20-30 minutes;

[0063] (2) Rinse off the residual acetone on the glass-ceramic with alcohol, and then sonicate in alcohol for 10 minutes;

[0064] (3) Take out the glass substrate, rinse the substrate with deionized water, and then wash it in the mixed solution (concentrated H 2 SO 4 / H 2 o 2 =7 / 3) soaked in more than 4h;

[0065] (4) Take ...

Embodiment 2

[0073] Embodiment 2: A new type of low-expansion alloy laser gyro cathode based on surface low-temperature CVD growth of graphene, the substrate is Fe-36Ni low-expansion alloy.

[0074] 1. Metal substrate electrochemical polishing

[0075] A solution of phosphoric acid (85%) / polyethylene glycol (3 / 1, volume) is used as a polishing liquid, and stirred evenly. Blister copper is selected as the cathode, and the metal substrate to be polished is used as the anode. Polish for 30 minutes under constant voltage (1.5-1.8V) mode.

[0076] 2. Metal substrate cleaning

[0077] (1) Submerge the metal substrate in acetone and heat it to 50°C, and ultrasonically clean it for 20-30 minutes;

[0078] (2) Rinse the residual acetone on the substrate with alcohol, and then ultrasonically clean it in alcohol for 10 minutes;

[0079] (3) Take out the substrate, rinse the substrate with deionized water, and then dry it with high-purity nitrogen for later use.

[0080] 3. Graphene growth on the...

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Abstract

The invention discloses a novel laser gyro cathode for growing graphene based on a surface CVD method. The method comprises the following steps: 1, polishing the surface of the cathode; 2, cleaning; and 3, growing graphene on the surface of the electrode by a CVD method. Compared with the methods in the prior art, the method has the advantages that the problem that the expansion coefficient of thecathode of the laser gyro is seriously mismatched with the cavity of the laser gyro is solved, the electron emission capacity of the cathode is improved, the sputtering possibility of the cathode isreduced, and the service life of the laser gyro is prolonged.

Description

technical field [0001] The invention relates to the field of laser gyroscopes, in particular to a novel laser gyroscope cathode based on surface CVD method to grow graphene. Background technique [0002] Utility model CN202231297U describes a novel glass cathode of a laser gyroscope. The new glass cathode for laser gyroscope includes cylindrical glass with a centrally symmetrical discharge cavity inside. A discharge layer is arranged on the inner wall of the glass cathode. The discharge layer is a high-purity aluminum film with a purity of 99.999%, and the thickness of the film is 3 ~4um, the high-purity aluminum film covers the entire surface of the inner wall of the glass cathode, and the end surface of the glass cathode is provided with a sealing layer, which is a layer of gold film for sealing connection with the sealing surface of the laser gyro resonator cavity, and the gold film is connected with the high-purity aluminum film , while extending the sealing end face of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/186C03C17/00C03C17/22C03C17/36G01C19/66
CPCC01B32/186C03C17/003C03C17/22C03C17/36C03C17/3615C03C17/3634C03C17/3671C03C17/3649G01C19/661C03C2218/152C03C2218/156
Inventor 王飞卢广锋王凡
Owner 湖南二零八先进科技有限公司
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