CN100516279C - Modifying processing method of vulcanizing surface of metallic base band for coating conductor - Google Patents
Modifying processing method of vulcanizing surface of metallic base band for coating conductor Download PDFInfo
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- CN100516279C CN100516279C CNB2007100185953A CN200710018595A CN100516279C CN 100516279 C CN100516279 C CN 100516279C CN B2007100185953 A CNB2007100185953 A CN B2007100185953A CN 200710018595 A CN200710018595 A CN 200710018595A CN 100516279 C CN100516279 C CN 100516279C
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- base band
- metal base
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Abstract
The invention relates to a coated-conductor use metal substrate vulcanization surface modification treatment method. The invention is characterized in that: the metal substrate absorbs the sulfur element at a low temperature and forms a c (2 is multiplied by 2) superstructure facilitating the preparation of an oxide barrier layer on the metal substrate surface through the high-temperature treatment. The invention absorbs the sulfur element at the room-temperature, which solves the disadvantages that the c (2 is multiplied by 2) superstructure can be gained under the lowest hydrogen sulfide partial pressure condition. Meanwhile, during the c (2 is multiplied by 2) superstructure forming process, long-time heat treatment under the high temperature is not needed.
Description
Technical field
The present invention relates to a kind of coating conductor metal base band surface modifying treatment, be specifically related to a kind of modifying processing method of vulcanizing surface of metallic base band for coating conductor.
Background technology
Coating conductor is because its good superconducting characteristic more and more is subjected to the attention of various countries research group.Coating conductor can be divided into metal base band, barrier layer, a little major part of YBCO layer.Wherein, in the oxide obstruction layer prepared on metal base belt process, because the chemical bond type of oxide barrier layers material is an ionic linkage, and the chemical bond type of metal base band is a metallic bond, the difference of this chemical bond type causes oxide barrier layers to be difficult in metal base band surface epitaxy.On the periodic table of elements, element sulphur and oxygen element are congeners, so sulphur and oxygen have very close chemical property; Sulphur can form orderly superstructure on Ni Base Metal base band surface simultaneously.Therefore, the orderly superstructure of the sulphur that forms with metal base band surface can effectively be improved the epitaxy situation of oxide barrier layers on the metal base band surface as template.
From external report situation, c (2 * 2) superstructure that obtains sulphur on the metal base band surface is in utmost point low in hydrogen sulphide dividing potential drop (5 * 10
-7Torr) realize under the condition; Perhaps, utilize the contained element sulphur of metal base band self to form c (2 * 2) superstructure at surface enrichment by long-time pyroprocessing.All there is unhandy problem in this dual mode.
Summary of the invention
The objective of the invention is in order to overcome the deficiencies in the prior art, a kind of modifying processing method of vulcanizing surface of metallic base band for coating conductor simple to operate is provided, so that form c (2 * 2) superstructure of sulphur on the metal base band surface.
To achieve these goals, the technical solution used in the present invention is: a kind of modifying processing method of vulcanizing surface of metallic base band for coating conductor, it is characterized in that its treating processes is: with metal base band under vacuum condition, handled 30 minutes for 400～600 ℃, make the gas molecule desorption of base band surface adsorption; Under vacuum condition, cool off sample subsequently to room temperature; Feeding contains the mixed gas of argon gas and hydrogen sulfide as the sulphur source, and the pilot-gas total pressure is at 1-2 times of normal atmosphere, allows metal base band be exposed in this atmosphere 30 minutes, utilizes the mixed gas in the vacuum pump scavenge system; Then atmosphere is converted to the mixed gas of the mixed gas that contains argon gas and hydrogen or hydrogen and other rare gas element, metal base band is heated to 850 ℃～900 ℃ handled 30 minutes, make unnecessary sulphur desorption, the cold back of stove obtains final metal base band.
Described metal base band is pure nickel, nickelalloy or the surface metal strip with nickel or nickelalloy; The content of described hydrogen sulfide is 0.1%-100%.
The present invention compared with prior art has the following advantages: because sulphur is adsorbed in the present invention at ambient temperature, overcome the drawback that must could obtain c (2 * 2) superstructure under the hot conditions under utmost point low in hydrogen sulphide partial pressure conditions.Simultaneously, form in the process of c (2 * 2) superstructure, also do not need under hot conditions, to heat-treat for a long time.
Description of drawings
Fig. 1 is the sulfidised surfaces modification treating processes synoptic diagram of metal base band of the present invention.
Embodiment
The present invention will be further described below in conjunction with embodiment.
Embodiment 1
The pure nickel metal base band that will have a cubic texture is under vacuum condition (2 * 10
-2Mbar), 600 ℃ handled 30 minutes, make the gas molecule desorption of base band surface adsorption.Keep vacuum condition, the pure nickel metal base band is cooled to 20～30 ℃, feed argon, the hydrogen sulfide mixed gas that contains 0.1% hydrogen sulfide then, the pilot-gas total pressure is about 1.5 times of normal atmosphere.Feed hydrogen sulfide containing mixed gas after 30 minutes, utilize the mixed gas in the vacuum pump scavenge system.Feed argon, hydrogen mixed gas, under this atmospheric condition, handled metal base band 30 minutes for 850 ℃.The cooling back obtains the finished product base band.
Embodiment 2
Nickel tungsten (Ni-5at%W) the alloyed metal base band that will have a cubic texture is under vacuum condition (2 * 10
-2Mbar), 600 ℃ handled 30 minutes, make the gas molecule desorption of base band surface adsorption.Keep vacuum condition, the nickel tungsten metal base band is cooled to 20～30 ℃, feed argon, the hydrogen sulfide mixed gas that contains 0.1% hydrogen sulfide then, the pilot-gas total pressure is about 1.5 times of normal atmosphere.Feed hydrogen sulfide containing mixed gas after 30 minutes, utilize the mixed gas in the vacuum pump scavenge system.Feed argon, hydrogen mixed gas, under this atmospheric condition, handled metal base band 30 minutes for 850 ℃.The cooling back obtains the finished product base band.
Embodiment 3
Nickel tungsten (Ni-5at%W) the alloyed metal base band that will have a cubic texture is under vacuum condition (2 * 10
-2Mbar), 600 ℃ handled 30 minutes, make the gas molecule desorption of base band surface adsorption.Keep vacuum condition, the nickel tungsten metal base band is cooled to 20～30 ℃, feed argon, the hydrogen sulfide mixed gas that contains 0.1% hydrogen sulfide then, the pilot-gas total pressure is about 1.5 times of normal atmosphere.Feed hydrogen sulfide containing mixed gas after 30 minutes, utilize the mixed gas in the vacuum pump scavenge system.Feed argon, hydrogen mixed gas, under this atmospheric condition, handled metal base band 30 minutes for 900 ℃.The cooling back obtains the finished product base band.
Claims (2)
1, a kind of modifying processing method of vulcanizing surface of metallic base band for coating conductor is characterized in that its treating processes is: metal base band under vacuum condition, was handled 30 minutes for 400～600 ℃, made the gas molecule desorption of base band surface adsorption; Subsequently under vacuum condition the cool metal base band to room temperature; Feeding contains the mixed gas of argon gas and hydrogen sulfide as the sulphur source, and the pilot-gas total pressure is at 1-2 times of normal atmosphere, allows metal base band be exposed in this atmosphere 30 minutes, utilizes the mixed gas in the vacuum pump scavenge system; Then atmosphere is converted to the mixed gas of the mixed gas that contains argon gas and hydrogen or hydrogen and other rare gas element, metal base band is heated to 850 ℃～900 ℃ handled 30 minutes, make unnecessary sulphur desorption, the cold back of stove obtains final metal base band; Described metal base band is pure nickel, nickelalloy or the surface metal strip with nickel or nickelalloy.
2, the modifying processing method of vulcanizing surface of a kind of metallic base band for coating conductor according to claim 1, the content that it is characterized in that described hydrogen sulfide is 0.1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100185953A CN100516279C (en) | 2007-09-05 | 2007-09-05 | Modifying processing method of vulcanizing surface of metallic base band for coating conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100185953A CN100516279C (en) | 2007-09-05 | 2007-09-05 | Modifying processing method of vulcanizing surface of metallic base band for coating conductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101109063A CN101109063A (en) | 2008-01-23 |
| CN100516279C true CN100516279C (en) | 2009-07-22 |
Family
ID=39041321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100185953A Expired - Fee Related CN100516279C (en) | 2007-09-05 | 2007-09-05 | Modifying processing method of vulcanizing surface of metallic base band for coating conductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100516279C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127735A (en) * | 2011-02-21 | 2011-07-20 | 中国科学院电工研究所 | Method for modifying metal baseband surface used for YBCO (YBa2Cu3O(7-x)) coating |
| CN102154611B (en) * | 2011-03-09 | 2012-07-04 | 西北有色金属研究院 | Method for performing vulcanizing modification on surface of NiW alloy base band |
| CN102146559B (en) * | 2011-03-09 | 2012-05-30 | 西北有色金属研究院 | Vulcanization method for NiW alloy baseband surface used for coating conductor |
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2007
- 2007-09-05 CN CNB2007100185953A patent/CN100516279C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101109063A (en) | 2008-01-23 |
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