CN101452020A - In-situ measurement material surface resistivity method under vacuum environment - Google Patents
In-situ measurement material surface resistivity method under vacuum environment Download PDFInfo
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- CN101452020A CN101452020A CNA2007101958997A CN200710195899A CN101452020A CN 101452020 A CN101452020 A CN 101452020A CN A2007101958997 A CNA2007101958997 A CN A2007101958997A CN 200710195899 A CN200710195899 A CN 200710195899A CN 101452020 A CN101452020 A CN 101452020A
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Abstract
The invention provides a site measurement method of material surface resistivity in vacuum, comprising the steps of: fixing a sample on a sample base through a way of direct spraying or cementing; respectively cementing a round tinsel electrode and a ring tinsel electrode around the round tinsel electrode at the center of the sample through conductive silver colloid; setting the sample and the cemented electrode in a vacuum vessel; respectively educing wires from the round tinsel electrode and the ring tinsel electrode, electrically connected to an electrometer on the outside of the vacuum vessel, reading the surface resistivity of the sample through applying certain voltage between the round tinsel electrode and the ring tinsel electrode in measurement. The inventive measurement method can be applied for site measurement of material surface resistivity in vacuum, thereby avoiding control problems of pressure size between the electrode and the sample in prior measurement method, the measurement has better accuracy and repeatability.
Description
Technical field
The invention belongs to the fields of measurement of resistivity of material, more particularly relate to a kind of method that is bonded in site measurement material surface resistivity under the vacuum environment by electrode.
Background technology
The resistivity of spacecraft surfacing has important effect for control discharging and recharging under the space environment, but under the effect of space environment, the spacecraft surfacing can be degenerated, and the normal operation in lifetime of satellite latter stage is caused very big influence.
The surface resistivity of material is an important parameter of assessment material electrical property, and therefore, it is very necessary that the surface resistivity of material is measured exactly.But, because the singularity of the residing environment of spacecraft need be carried out in site measurement to its material surface resistivity.Usually, the in site measurement of the surface resistivity of conventional spacecraft material all adopts the metal electrode pressing to measure, and wherein, the electrode that is adopted contacts with measuring samples and will apply certain pressure, carries out the measurement of surface resistance then.But usually in measuring process, the size of exerting pressure is difficult to control, and the difference of this contact pressure, and the result who directly causes measuring has the difference of highly significant, greatly influence the accuracy of measurement result, can not reflect the actual electrical performance of material exactly.For this reason, the method for seeking the material surface resistivity under a kind of in site measurement vacuum environment of pin-point accuracy reflects that truly the surface resistivity of spacecraft material is very necessary.
Summary of the invention
One of goal of the invention of the present invention provides a kind of pin-point accuracy and can reflect truly that the surface resistivity of the material of vacuum environment under vacuum environment measures.
Technical scheme of the present invention is as follows:
The method of material surface resistivity under the in site measurement vacuum environment of the present invention, it may further comprise the steps:
1) by direct spraying or bonding mode sample is fixed on the sample base;
2) be bonded in sample central authorities by conductive silver glue respectively with the circular metal foil electrode with around the endless metal foil electrode of circular metal foil electrode;
3) sample and the good electrode of bonding are arranged in the vacuum tank;
4) draw lead from circular metal foil electrode and endless metal foil electrode respectively, be electrically connected on the outer electrometer of vacuum tank, electrometer applies the surface resistivity that certain voltage is read sample during by measurement between circular electrode and ring electrode.
In the said method, described metal foil electrode is Copper Foil, aluminium foil and/or silver foil electrode, the preferably copper foil electrode.
In the said method, the thickness of described metal forming is 0.1mm-0.2mm, and the thickness of circular metal forming and endless metal paper tinsel equates.
In the said method, the vacuum tightness of vacuum tank is higher than 4 * 10
-3Pa.
In the said method, draw lead described in the step 4) and comprise elastic wire outer or wire bonds drawn outside the electrical condenser behind metal foil electrode by drawing vacuum tank after being pressed on the metal foil electrode by fixed support.
Compared with prior art, method of the present invention has following advantage:
Measuring method of the present invention is come binding metal paper tinsel (copper, aluminium or silver foil) thereby the resistivity of material under electrode and the sample measurement vacuum environment by using conductive silver glue.Therefore, there is not the problem of electrode and the control of sample room contact pressure size in measuring method of the present invention, can improve the repeatability of measurement result effectively.And, because conductive silver glue resistivity is minimum, can ignore contact resistance therebetween, thereby improve the accuracy of measuring.In addition, measuring method of the present invention can be applicable to simulate the in site measurement of material surface resistivity under the vacuum environment, has avoided the control problem of electrode and sample room pressure size in the method for testing in the past, and measurement result has better accuracy and repeatability.
Description of drawings
Fig. 1 is a material surface resistivity synoptic diagram under the metal foil electrode bonding method in site measurement vacuum environment of the present invention.
Wherein, 1, circular electrode; 2, ring electrode; 3, conductive silver glue; 4, sample; 5, lead; 6, electrometer; 7, sample base; 8, vacuum tank.
Embodiment
Elaborate below in conjunction with the embodiment of accompanying drawing, so that those skilled in the art more is expressly understood the present invention to invention.
With reference to accompanying drawing 1, Fig. 1 is the surface resistivity synoptic diagram of material under the metal foil electrode bonding method in site measurement vacuum environment.When the surface resistivity of in site measurement specimen material under vacuum environment, mainly carry out following steps: at first spraying method (for example spin coating, blade coating, dip-coating etc.) or the bonding method of surface resistivity testing sample 4 by any routine is fixed on the sample base 7; Be the circular copper foil electrode 1 (preferred diameter be 25mm) of 0.1mm-0.2mm is bonded in sample 4 by conductive silver glue 3 central authorities then with a thickness, be that 0.1mm-0.2mm annular copper foil electrode 2 (the ring outer dia is 39mm, and inside diameter is 29mm) is bonded on the sample 4 by conductive silver glue 3 around circular copper foil electrode 1 with a thickness again.Fix and be placed into vacuum tightness behind sample 4 and the bonding electrode and be higher than 4 * 10
-3In the Pa vacuum tank 8.Lead 5 difference silver soldering are on metal foil electrode then, and draw outside the vacuum tank 8, link to each other with electrometer 6 then, during measurement, apply certain voltage by electrometer 6 at circular copper foil electrode 1 and 2 of annular copper foil electrodes, draw the surface resistivity of sample by electrometer 6 readings.
By replacing Copper Foil can form new embodiment, also can use the metal forming (Copper Foil, aluminium foil and/or silver foil) of other thickness and size to form new embodiment with silver foil.
Although above the specific embodiment of the present invention has been given to describe in detail and explanation; but what should indicate is; those skilled in the art can carry out various equivalences to above-mentioned embodiment according to conception of the present invention and change and modification; the function that it produced all should be within protection scope of the present invention when not exceeding spiritual that instructions and accompanying drawing contain.
Claims (7)
1, the method for material surface resistivity under a kind of in site measurement vacuum environment may further comprise the steps:
1) by direct spraying or bonding mode sample is fixed on the sample base;
2) be bonded in sample central authorities by conductive silver glue respectively with the circular metal foil electrode with around the endless metal foil electrode of circular metal foil electrode;
3) sample and the good electrode of bonding are arranged in the vacuum tank;
4) draw lead from circular metal foil electrode and endless metal foil electrode respectively, be electrically connected on the outer electrometer of vacuum tank, electrometer applies the surface resistivity that certain voltage is read sample during by measurement between circular electrode and ring electrode.
2, the method for claim 1 is characterized in that, described metal foil electrode is Copper Foil, aluminium foil and/or silver foil electrode.
3, method as claimed in claim 2 is characterized in that, described metal foil electrode is a copper foil electrode.
As each described method of claim 1-3, it is characterized in that 4, the thickness of described metal forming is 0.1mm-0.2mm.
5, method as claimed in claim 4 is characterized in that, the thickness of described circular metal paper tinsel and endless metal paper tinsel equates.
6, as each described method of claim 1-3, it is characterized in that the vacuum tightness of described vacuum tank is higher than 4 * 10
-3Pa.
7, as each described method of claim 1-3, it is characterized in that, draw lead described in the step 4) and comprise elastic wire outer or wire bonds drawn outside the electrical condenser behind metal foil electrode by drawing vacuum tank after being pressed on the metal foil electrode by fixed support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101958997A CN101452020A (en) | 2007-12-04 | 2007-12-04 | In-situ measurement material surface resistivity method under vacuum environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101958997A CN101452020A (en) | 2007-12-04 | 2007-12-04 | In-situ measurement material surface resistivity method under vacuum environment |
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| Publication Number | Publication Date |
|---|---|
| CN101452020A true CN101452020A (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101958997A Pending CN101452020A (en) | 2007-12-04 | 2007-12-04 | In-situ measurement material surface resistivity method under vacuum environment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128985A (en) * | 2010-12-30 | 2011-07-20 | 中国航天科技集团公司第五研究院第五一○研究所 | Method for testing conductivity of medium material |
| CN102645587A (en) * | 2012-04-27 | 2012-08-22 | 中航锂电（洛阳）有限公司 | Method and device for electric conductivity test of lithium ion battery pole piece |
| CN103063923A (en) * | 2012-12-25 | 2013-04-24 | 广州鹿山新材料股份有限公司 | Volume resistivity test method of ethylene vinyl acetate copolymer (EVA) adhesive film used for photovoltaic module packaging |
| CN103226167A (en) * | 2013-04-24 | 2013-07-31 | 兰州空间技术物理研究所 | Conductivity measurement device and method of dielectric material |
| CN104407236A (en) * | 2014-11-12 | 2015-03-11 | 西安交通大学 | Method for eliminating surface charge of material in vacuum |
| CN105486926A (en) * | 2016-01-29 | 2016-04-13 | 哈尔滨理工大学 | Three-electrode system for testing surface resistivity of bar-shaped insulating material |
| CN108225986A (en) * | 2017-12-20 | 2018-06-29 | 北京卫星环境工程研究所 | For the electrode measurement device of media particle object electric performance test |
-
2007
- 2007-12-04 CN CNA2007101958997A patent/CN101452020A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128985A (en) * | 2010-12-30 | 2011-07-20 | 中国航天科技集团公司第五研究院第五一○研究所 | Method for testing conductivity of medium material |
| CN102128985B (en) * | 2010-12-30 | 2013-04-24 | 中国航天科技集团公司第五研究院第五一○研究所 | Method for testing conductivity of medium material |
| CN102645587A (en) * | 2012-04-27 | 2012-08-22 | 中航锂电（洛阳）有限公司 | Method and device for electric conductivity test of lithium ion battery pole piece |
| CN103063923A (en) * | 2012-12-25 | 2013-04-24 | 广州鹿山新材料股份有限公司 | Volume resistivity test method of ethylene vinyl acetate copolymer (EVA) adhesive film used for photovoltaic module packaging |
| CN103063923B (en) * | 2012-12-25 | 2015-06-03 | 广州鹿山新材料股份有限公司 | Volume resistivity test method of ethylene vinyl acetate copolymer (EVA) adhesive film used for photovoltaic module packaging |
| CN103226167A (en) * | 2013-04-24 | 2013-07-31 | 兰州空间技术物理研究所 | Conductivity measurement device and method of dielectric material |
| CN104407236A (en) * | 2014-11-12 | 2015-03-11 | 西安交通大学 | Method for eliminating surface charge of material in vacuum |
| CN105486926A (en) * | 2016-01-29 | 2016-04-13 | 哈尔滨理工大学 | Three-electrode system for testing surface resistivity of bar-shaped insulating material |
| CN105486926B (en) * | 2016-01-29 | 2018-03-27 | 哈尔滨理工大学 | Strip insulating materials surface resistivity tests three-electrode system |
| CN108225986A (en) * | 2017-12-20 | 2018-06-29 | 北京卫星环境工程研究所 | For the electrode measurement device of media particle object electric performance test |
| CN108225986B (en) * | 2017-12-20 | 2020-07-28 | 北京卫星环境工程研究所 | Electrode measuring device for electrical property test of dielectric particles |
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Open date: 20090610 |