CN106654861A - High-voltage gas switch electrode and preparation method thereof - Google Patents
High-voltage gas switch electrode and preparation method thereof Download PDFInfo
- Publication number
- CN106654861A CN106654861A CN201610930520.1A CN201610930520A CN106654861A CN 106654861 A CN106654861 A CN 106654861A CN 201610930520 A CN201610930520 A CN 201610930520A CN 106654861 A CN106654861 A CN 106654861A
- Authority
- CN
- China
- Prior art keywords
- electrode
- gases
- high pressure
- matrix
- pressure switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/20—Means for starting arc or facilitating ignition of spark gap
- H01T1/22—Means for starting arc or facilitating ignition of spark gap by the shape or the composition of the electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
Abstract
The invention provides a high-voltage gas switch electrode, which comprises a substrate and a coating located on the surface of the substrate, wherein the coating is a polycrystalline tungsten coating. According to the high-voltage gas switch electrode provided by the invention, the high-purity polycrystalline tungsten coating is prepared on the surface of the pure copper electrode substrate; the ablation resistance of a breakdown part of the electrode can be improved by the high-purity polycrystalline tungsten coating located on the surface of the electrode; and the electrode is practically applied to a high-voltage gas switch with a high-power microwave source, and can also be popularized and applied to a self-breakdown electrode of the similar high-voltage gas switch. Under the same condition, a contrast experiment is carried out on the high-voltage gas switch electrode and a common electrode, and the electrode with the high-purity polycrystalline tungsten coating has a higher ablation resistance characteristic.
Description
Technical field
The invention belongs to gases at high pressure switch electrode field, more particularly to a kind of gases at high pressure switch electrode of anti-yaw damper.
Background technology
High-Power Microwave (HPM) weapon is a kind of potential strong electromagnetic radiation weapon, and it can upset, damage or burn the people
With or military equipment in electronic system so as to temporarily or permanently disabler.Ultra-wide spectrum HPW weapon is HPM weapons
An important form.The frequency spectrum of Ultra-wide spectrum HPW is wider, can cover more target adjustment response frequency, is not required to take aim at
Frequency can be implemented to attack, and its high power feature can be to the bigger threat of target configuration.Therefore, Ultra-wide spectrum HPW weapon will
Play an important role in present information war.
The core of Ultra-wide spectrum HPW generation system is pulse power supply, its can produce nanosecond pulsewidth, high voltage,
High instantaneous power voltage pulse.Gases at high pressure switch is one of critical component of pulse power supply, and electrode erosion is to affect switch
The key factor of working life and stability.Performance, electrode surface shape, the switch working state of electrode erosion and electrode material
And electrode spacing etc. is relevant.During switch, substantial amounts of energy need to dissipate in electrode surface, and energy once exceedes electrode material
Needed for material fusing during energy, it will ablation even material vaporization occurs, the metal gas that material vaporization is produced can not only reduce switch
Insulating capacity, can also cause electrode material to lose, make switch electrode spacing change, so as to change the work shape of switch
State.
With the continuous development of high repetition frequency and long-life switching technique, suppress electrode erosion to high power gas spark
The high repetition frequency of switch and long-life are significant.Common electrode material has copper, copper-tungsten, graphite and stainless steel
Deng lot of experiment validation these common electrode materials still have different degrees of ablation, still need to constantly look for the electricity of resistance to ablation
Pole material.
The content of the invention
In order to solve the resistance to ablation problem of gases at high pressure switch electrode, the present invention proposes a kind of many crystal coating electricity of high purity tungsten
Pole and preparation method thereof, the electrode can be 4MPa to 6MPa in air pressure, gas spark Self-breaking switch conducting voltage is hundreds of thousand
Volt and conducting electric current are to work in the environment of several kilo-amperes even tens kilo-ampere magnitudes.
Tungsten has excellent physical and chemical performance, such as high fusing point, high rigidity, anti-yaw damper, high wear resistant, antioxygen
Change etc..The vapour pressure of tungsten is still very low under 2000～2500 DEG C of high temperature, and evaporation rate is slow.Pass through vapour deposition in piece surface
Method prepares tungsten coating, can significantly improve the performance such as its anti-yaw damper, erosion resistant, anti-oxidant.Tungsten also has excellent electric conductivity
With more stable chemical property.Based on many characteristics of tungsten, relatively meet the resistance to ablation requirement of electrode material, but tungsten fragility
By force, traditional processing method is difficult to be molded the product compared with complicated shape.
The present invention technical solution be：
A kind of gases at high pressure switch electrode is provided, it is particular in that：Including matrix and the coating positioned at matrix surface,
Above-mentioned coating is many crystal coatings of tungsten.
The material of matrix can select common electrode material copper, copper-tungsten, graphite and stainless steel etc., it is contemplated that fine copper is led
Heating rate is higher, and the material of above-mentioned matrix selects fine copper.
According to gases at high pressure spark switch self breakdown electrode structure, the shape of above-mentioned matrix can be flat board, bulb or ring
Shape shape.
In order to ensure coating binding force, above-mentioned coating layer thickness is less than 0.5mm.
The present invention also provides a kind of method for preparing gases at high pressure switch electrode, comprises the following steps：
Step one：According to gases at high pressure spark switch self breakdown electrode structural designs basal body structure；
Step 2：Electrode matrix surface in cleaning one；
Step 3：Using the method for chemistry transport deposition, the electrode matrix superficial growth high purity tungsten after step 2 cleaning
Many crystal coatings；
Step 4：The electrode that step 3 is obtained is processed by shot blasting.
The detailed process of above-mentioned steps three is：
Fine copper matrix is put into into settling chamber, by the WF that quality purity is 99.99%6With the H that bulk purity is 99.99%2With
Mol ratio is 1:2～1:4 ratio is passed through in the settling chamber, and depositing temperature is 530 DEG C～620 DEG C, and deposition 1 to 2 hours is
The many crystal coatings of tungsten can be prepared in fine copper matrix surface deposition.
The invention has the beneficial effects as follows：
1st, gases at high pressure switch electrode of the present invention prepares many crystal coatings of high purity tungsten on fine copper electrode matrix surface, positioned at electrode
The many crystal coatings of high purity tungsten on surface can improve the ablation resistance that electrode punctures position, and the electrode is in the height of high-power microwave source
Pressure gas switch in obtained exemplary application, also can popularization and application to similar gases at high pressure switch self breakdown electrode in.Identical
Under the conditions of, contrast experiment is carried out with common electrode, high purity tungsten polycrystalline coated electrode of the present invention has stronger resistance to ablation characteristics.
2nd, the present invention adopts CHEMICAL TRANSPORT CVD method, the method not only to reduce production cost and easily more complicated
Surface forming.
Description of the drawings
Fig. 1 is high purity tungsten polycrystalline coated electrode construction schematic diagram；
Fig. 2 is high purity tungsten polycrystalline coated electrode mounting structure schematic diagram.
Reference is in figure：1- matrixes；The many crystal coatings of 2- high purity tungstens；3- gas switch shells；4- switch insulators；5-
Electrode guide rod；6- high purity tungsten polycrystalline coated electrodes；7- fastening bolts.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in figure 1, electrode of the present invention includes matrix 1, the shape of matrix 1 can be that flat board, annular or bulb etc. are various
Shape；The material of matrix 1 is pure copper material.The surface of matrix 1 has many crystal coatings 2 of high purity tungsten, in order to ensure coating binding force,
Its THICKNESS CONTROL is within 0.5mm.
Specifically preparation method is：First according to the knot of gases at high pressure spark switch self breakdown electrode structural designs matrix 1
Structure；Then, degreasing cleaning treatment is done on the surface of electrode matrix 1, it is subsequently thick in its superficial growth using CHEMICAL TRANSPORT sedimentation
High purity tungsten many crystal coatings 2 of the degree d less than 0.5mm, CHEMICAL TRANSPORT sedimentation is specially：By the WF that quality purity is 99.99%6With
Bulk purity is 99.99%H2With 1:2-1:4 ratio is passed through in settling chamber, and depositing temperature is 530 DEG C -620 DEG C, sedimentation time
1-2 hours, in fine copper matrix surface deposition high purity tungsten many crystal coating 2 of the thickness less than 0.5mm is prepared；Finally, prepared by growth
Coated electrode surface be processed by shot blasting, you can complete the preparation of high purity tungsten polycrystalline coated electrode.
During installation, first by all parts of gas switch as shown in Figure 2 (gas switch shell 3, switch insulator 4,
Electrode guide rod 5, high purity tungsten polycrystalline coated electrode 6 and fastening bolt 7 etc.) it is clean using alcohol washes；Then two electrodes are led
Bar 5 is inserted respectively in the endoporus of two switch insulators 4；The bottom surface of high purity tungsten polycrystalline coated electrode 6 is close to electrode and draws bar, with tightly
Fixing bolt 7 fastens itself and electrode guide rod, (if electrode is annular can be fastened using bolt in central aperture, if for flat board its
Rear end can be designed from threaded), ensure fitting for electrode base and annular groove bottom both ends of the surface maximum area；Finally, switch insulation
Son completes electrode and electrode draws after the installation of bar, is fixed in gas switch shell 3, and split cavity inside the Pass fills 4～6MPa
High-Voltage Insulation gas.
After installation terminates, electric discharge examination experiment is carried out.It is specific as follows：Pulse high-voltage 280kV is filled to two electrodes of switch, is supervised
Measuring piezoelectric voltage；After multiple discharge, the ablation amount of coated electrode is measured；The measuring method of electrode erosion amount has various, such as：Claim
Weight method and electrode size measurement etc.；The present invention adopts the difference in height of electrode before and after electrode size mensuration, i.e. measurement experiment, if greatly
In 0.5mm, then the electrode failure is defined.The present embodiment measures the height of electrode before and after size electric discharge through 100,000 discharge tests
Degree difference is 0.1mm.
The high purity tungsten polycrystalline coated electrode for gases at high pressure switch of the present invention is shown experimentally that, electrode is improve
Resistance to ablation and the stability of switch.
Especially in gases at high pressure switch exemplary application, contrast experiment is carried out with common electrode under the same terms, passed through
Under 280kV operating voltages, the discharge test of 100,000 times, measurement result is as follows：High purity tungsten polycrystalline coated electrode and fine copper electrode
Dimensional height difference is respectively 0.1mm and 0.25mm, test result indicate that：High purity tungsten polycrystalline coated electrode has stronger resistance to ablation
Characteristic.
Claims (6)
1. a kind of gases at high pressure switch electrode, it is characterised in that：Including matrix and the coating positioned at matrix surface, the coating is
The many crystal coatings of tungsten.
2. gases at high pressure switch electrode according to claim 1, it is characterised in that：The material of described matrix is fine copper.
3. gases at high pressure switch electrode according to claim 1, it is characterised in that：Described matrix is shaped as flat board, ball
Head or annular shape.
4. the gases at high pressure switch electrode according to claim 1 or 2 or 3, it is characterised in that：The coating layer thickness is less than
0.5mm。
5. a kind of method for preparing gases at high pressure switch electrode, it is characterised in that：Comprise the following steps：
Step one：According to gases at high pressure spark switch self breakdown electrode structural designs basal body structure；
Step 2：Electrode matrix surface in cleaning one；
Step 3：Using the method for chemistry transport deposition, the electrode matrix superficial growth high purity tungsten polycrystalline after step 2 cleaning
Coating；
Step 4：The electrode that step 3 is obtained is processed by shot blasting.
6. the method for preparing gases at high pressure switch electrode according to claim 5, it is characterised in that：The step 3 is concrete
For：
Fine copper matrix is put into into settling chamber, by the WF that quality purity is 99.99%6With the H that bulk purity is 99.99%2With mole
Than for 1:2～1:4 ratio is passed through in the settling chamber, and depositing temperature is 530 DEG C～620 DEG C, in fine copper matrix surface deposition
Prepare many crystal coatings of tungsten.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610930520.1A CN106654861A (en) | 2016-10-31 | 2016-10-31 | High-voltage gas switch electrode and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610930520.1A CN106654861A (en) | 2016-10-31 | 2016-10-31 | High-voltage gas switch electrode and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106654861A true CN106654861A (en) | 2017-05-10 |
Family
ID=58820668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610930520.1A Pending CN106654861A (en) | 2016-10-31 | 2016-10-31 | High-voltage gas switch electrode and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106654861A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973052A (en) * | 2019-03-25 | 2019-07-05 | 西安闪光能源科技有限公司 | It is a kind of multistage energy storage controllably impact wave generation device |
| CN113555773A (en) * | 2021-07-08 | 2021-10-26 | 中国人民解放军国防科技大学 | Self-breakdown high-voltage gas switch based on surface modified graphite electrode |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109258A (en) * | 1984-12-19 | 1986-06-10 | 菲利浦光灯制造公司 | Make the method for＜111〉orientation tungsten according to qualifications |
| CN102560618A (en) * | 2012-02-28 | 2012-07-11 | 北京科技大学 | Method for preparing tungsten single crystal |
| CN103326246A (en) * | 2013-05-27 | 2013-09-25 | 国家电网公司 | Three-electrode multi-channel gas spark switch |
| CN104213096A (en) * | 2014-08-12 | 2014-12-17 | 厦门虹鹭钨钼工业有限公司 | Preparation method of crucible with tungsten coating |
| US20160290223A1 (en) * | 2013-11-20 | 2016-10-06 | Brilliant Light Power, Inc. | Power generation systems and methods regarding same |
-
2016
- 2016-10-31 CN CN201610930520.1A patent/CN106654861A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109258A (en) * | 1984-12-19 | 1986-06-10 | 菲利浦光灯制造公司 | Make the method for＜111〉orientation tungsten according to qualifications |
| CN102560618A (en) * | 2012-02-28 | 2012-07-11 | 北京科技大学 | Method for preparing tungsten single crystal |
| CN103326246A (en) * | 2013-05-27 | 2013-09-25 | 国家电网公司 | Three-electrode multi-channel gas spark switch |
| US20160290223A1 (en) * | 2013-11-20 | 2016-10-06 | Brilliant Light Power, Inc. | Power generation systems and methods regarding same |
| CN104213096A (en) * | 2014-08-12 | 2014-12-17 | 厦门虹鹭钨钼工业有限公司 | Preparation method of crucible with tungsten coating |
Non-Patent Citations (1)
| Title |
|---|
| 马捷: ""温度对化学气相沉积钨组织与表面形貌的影响"", 《中国表面工程》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973052A (en) * | 2019-03-25 | 2019-07-05 | 西安闪光能源科技有限公司 | It is a kind of multistage energy storage controllably impact wave generation device |
| CN113555773A (en) * | 2021-07-08 | 2021-10-26 | 中国人民解放军国防科技大学 | Self-breakdown high-voltage gas switch based on surface modified graphite electrode |
| CN113555773B (en) * | 2021-07-08 | 2022-07-05 | 中国人民解放军国防科技大学 | Self-breakdown high-voltage gas switch based on surface modified graphite electrode |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10752994B2 (en) | Apparatus and method for depositing a coating on a substrate at atmospheric pressure | |
| Zhou et al. | Dielectric and microwave absorption properties of plasma sprayed Cr/Al2O3 composite coatings | |
| CN101845616B (en) | Conductor electric exploding plasma-based low-energy metal ion implantation (PBLEMII) device | |
| WO2008102679A1 (en) | Plasma processing equipment | |
| CN106523313B (en) | A kind of micropulse plasma thruster | |
| CN102668721B (en) | Method and device for polarizing a DBD electrode | |
| Znamirowski et al. | Low macroscopic field electron emission from surface of plasma sprayed and laser engraved TiO2, Al2O3+ 13TiO2 and Al2O3+ 40TiO2 coatings | |
| CN103789713A (en) | Anti-oxidation MCrAlY fine-grain protective coating material and preparation method thereof | |
| CN106654861A (en) | High-voltage gas switch electrode and preparation method thereof | |
| Xu et al. | Self-enhanced plasma discharge effect in the deposition of diamond-like carbon films on the inner surface of slender tube | |
| Liebig et al. | Space charge, plasma potential and electric field distributions in HiPIMS discharges of varying configuration | |
| Zhu et al. | Microstructures and electrical properties of nanostructured Cr2O3 thin films deposited by dual-target reactive high-power impulse magnetron sputtering | |
| CN105931932B (en) | A kind of preparation method for nitrogenizing aluminum insulation layer cathode heater | |
| CN106714434B (en) | Paired electrode coplanar discharge plasma generating device | |
| Zou et al. | Two different modes of wire explosion for nano-powder production | |
| CN106793436B (en) | A kind of nickel-nickel oxide-magnesia composite cathode, preparation method and applications enhancing atmospheric pressure plasma discharge intensity | |
| RU2478732C1 (en) | Composite electrically blasted conductor for blast deposition of coatings or metal and alloy surface blast alloying | |
| CN102251209B (en) | Electrical explosion spraying method for powder | |
| CN104617357A (en) | High-power microwave output window and manufacturing method thereof | |
| Gao et al. | The surface charge of Al2O3 ceramic insulator under nanosecond pulse voltage in high vacuum: characteristics and its impact on surface electric field | |
| CN207701304U (en) | A kind of triggerless electrode that can reduce vacuum arc thruster starting the arc energy | |
| CN110158056A (en) | Vacuum coater | |
| CN202164346U (en) | Powder electrical explosion spraying device | |
| CN204497566U (en) | The pseudospark switch that a kind of creeping discharge triggers | |
| CN201120355Y (en) | Discharge-induced explosion spray coating chamber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170510 |