CN101026219A - Rapid oxygen permeation process of large-size quasi-single crystal domain high-temperature balk superconductor - Google Patents
Rapid oxygen permeation process of large-size quasi-single crystal domain high-temperature balk superconductor Download PDFInfo
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- CN101026219A CN101026219A CN 200710038709 CN200710038709A CN101026219A CN 101026219 A CN101026219 A CN 101026219A CN 200710038709 CN200710038709 CN 200710038709 CN 200710038709 A CN200710038709 A CN 200710038709A CN 101026219 A CN101026219 A CN 101026219A
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Abstract
This invention relates to an oxygen quick penetration method for large size high-temperature super conducting block materials including: putting a superconducting block material in an oxygen atmosphere of 450-500deg.C to penetrate oxygen keeping constant in an effective time period, before that, small holes for penetrating oxygen are processed uniformly on the surface of a superconducting block material, when working, constant temperature is kept to penetrate oxygen for 55-65h, which is only a half of an ordinary method so as to save energy, time and increase production efficiency.
Description
Technical field:
The present invention relates to a kind of oxygen permeation process of superconduction block material, particularly a kind of large scale diameter is greater than the rapid oxygen permeation process of 30mm quasi-single-domain high temperature superconductor block.
Background technology:
Last one technology of making the large scale superconduction block material is exactly at a certain temperature, allows oxygen be penetrated in the superconduction block material, because the compactness of superconduction block material is very high, so want the oxygen of elongated time.Conventional logical oxygen technology is that superconduction block material is put into except that air admission hole and venthole, and it keeps 450c ° of stationary temperature-500c ° to ooze oxygen in horizontal type resistance tube stove that all seals or chamber type electric resistance furnace.
There are two defectives when superconduction block material being oozed oxygen with the technology of routine:
(1) because is the large scale superconduction block material, the compactness height, allow oxygen infiltration slowly, have only from upper and lower surface, side and enter, so need ooze oxygen (about 120 hours) for a long time, if it is shorter to ooze the oxygen time, make large scale superconduction block material regional area anoxic so directly to cause the magnetic suspension force of superconduction block material to descend.
(2) can be got by experiment: the intact accurate single domain superconduction block material of sintering is under a certain steady temperature for a long time, can the performance of superconduction block material be descended to some extent like this.
Owing to there are above two defectives, directly caused the waste electric energy, lost time and the decreased performance of superconduction block material.
Summary of the invention:
The objective of the invention is to overcome the weak point of prior art, a kind of rapid oxygen permeation process of large-size quasi-single crystal domain high-temperature balk superconductor is provided.This technology can power saving, save time, can enhance productivity again.
For achieving the above object, the present invention by the following technical solutions:
A kind of rapid oxygen permeation process of large-size quasi-single crystal domain high-temperature balk superconductor comprises superconduction block material 1 inserted keeping constant temperature to ooze oxygen in the oxygen atmosphere of 450c ° ~ 500c ° temperature in effective time, it is characterized in that
1) before oozing oxygen, the Surface Machining of superconduction block material 1 is gone out uniform logical oxygen aperture 2
When 2) oozing oxygen, the time that keeps constant temperature to ooze oxygen is 55-65 hour.
The aperture of the logical oxygen aperture that above-mentioned superconduction block material surface is uniform is, rapid oxygen permeation process according to claim 1 described large-size quasi-single crystal domain high-temperature balk superconductor, the aperture that it is characterized in that the logical oxygen aperture 2 that described superconduction block material 1 surface is uniform is 1 ~ 3mm, and hole depth is 1/3 of superconduction block material 1 thickness h; The distribution of logical oxygen aperture 2 is the lower surfaces at superconduction block material 1, with 1/3 of the exradius R of superconduction block material 1 is radius, with superconduction block material 1 center is that a distribution circle 3 is marked in the center of circle, circumferential uniform logical oxygen aperture 2 on distribution circle 3, the arc length between per two logical oxygen apertures 2 is 1/2. of superconduction block material 1 exradius R
The oxygen aperture is led in the above-mentioned preceding processing of oxygen of oozing, adopt the diamond bit of 1 ~ 3mm diameter, the rapid oxygen permeation process of large-size quasi-single crystal domain high-temperature balk superconductor according to claim 1 and 2 is characterized in that adopting the diamond bit of 1 ~ 3mm diameter to process logical oxygen aperture 2. on the superconduction block material 1
The present invention compared with prior art, have following conspicuous substantive distinguishing features and advantage: the present invention holes on superconduction block material (boring can be ignored the mechanical strength influence of superconduction block material), oxygen is permeated fast, to ooze the oxygen time be half of conventional logical oxygen time. avoided oozing oxygen for a long time in the prior art. in experiment, utilize technology of the present invention, to identical superconduction block material, oozing the oxygen time is conventional half of oxygen time of oozing, and it is identical that the magnetic suspension force of resulting superconduction block material and routine are oozed the oxygen method.
Description of drawings
Fig. 1 is the stereogram of an accurate single domain superconduction block material of the present invention.
Fig. 2 is the stereogram after superconduction block material lower surface shown in Figure 1 processes logical oxygen aperture.
Embodiment
A preferred embodiment of the present invention accompanying drawings is as follows:
Referring to Fig. 1 and Fig. 2, the rapid oxygen permeation process of this large scale (this example is that diameter is the bulk of 32mm) quasi-single-domain high temperature superconductor block is:
1) ooze oxygen before, the lower surface of superconduction block material 1 is processed uniform logical oxygen aperture 2, adopt the diamond bit of 1 ~ 3mm diameter to process logical oxygen aperture 2, its aperture is 1 ~ 3mm, hole depth is 1/3 of superconduction block material 1 thickness h; The distribution of logical oxygen aperture 2 is: with 1/3 of the exradius R of superconduction block material 1 is radius, with superconduction block material 1 center is that a distribution circle 3 is marked in the center of circle, circumferential uniform logical oxygen aperture 2 on distribution circle 3, the arc length between per two logical oxygen apertures 2 is for surpassing 1/2. of bulk 1 exradius R
2) will process superconduction block material 1 behind the logical oxygen aperture 2 inserts in the oxygen atmosphere of 450c ° ~ 500c ° temperature and keeps constant temperature to ooze oxygen in 55-65 hour.
Adopt this routine technology, the magnetic suspension force of resulting superconduction block material is resulting identical with the conventional oxygen permeation process of prior art.
Claims (3)
1. the rapid oxygen permeation process of a large-size quasi farmland high-temperature superconducting block comprises superconduction block material (1) is inserted 450 ℃～500 ℃, keeps constant temperature to ooze oxygen in the oxygen atmosphere of temperature in effective time, it is characterized in that:
1) before oozing oxygen, the Surface Machining of superconduction block material (1) is gone out uniform logical oxygen aperture (2);
When 2) oozing oxygen, the time that keeps constant temperature to ooze oxygen is 55-65 hour.
2. the rapid oxygen permeation process of large-size quasi-single crystal domain high-temperature balk superconductor according to claim 1 is characterized in that the aperture of the logical oxygen aperture (2) that described superconduction block material (1) surface is uniform is 1～3mm, and hole depth is 1/3 of superconduction block material (a 1) thickness h; The distribution of logical oxygen aperture (2) is: the lower surface in superconduction block material (1), with 1/3 of the exradius R of superconduction block material (1) is radius, with superconduction block material (1) center is that a distribution circle (3) is marked in the center of circle, go up circumferentially uniform logical oxygen aperture (2) at distribution circle (3), the arc length between per two logical oxygen apertures (2) is 1/2 of superconduction block material (1) exradius R.
3. the rapid oxygen permeation process of large-size quasi-single crystal domain high-temperature balk superconductor according to claim 1 and 2 is characterized in that adopting the diamond bit of 1～3mm diameter to process logical oxygen aperture (2) on the superconduction block material (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710038709 CN101026219A (en) | 2007-03-29 | 2007-03-29 | Rapid oxygen permeation process of large-size quasi-single crystal domain high-temperature balk superconductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710038709 CN101026219A (en) | 2007-03-29 | 2007-03-29 | Rapid oxygen permeation process of large-size quasi-single crystal domain high-temperature balk superconductor |
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| CN101026219A true CN101026219A (en) | 2007-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200710038709 Pending CN101026219A (en) | 2007-03-29 | 2007-03-29 | Rapid oxygen permeation process of large-size quasi-single crystal domain high-temperature balk superconductor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134495A (en) * | 2014-08-13 | 2014-11-05 | 南京大学（苏州）高新技术研究院 | Room temperature electrochemical oxidation method of coated conductor superconduction layer |
-
2007
- 2007-03-29 CN CN 200710038709 patent/CN101026219A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134495A (en) * | 2014-08-13 | 2014-11-05 | 南京大学（苏州）高新技术研究院 | Room temperature electrochemical oxidation method of coated conductor superconduction layer |
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