CN105185677A - Millimeter wave traveling wave tube diamond energy transmission window and processing method - Google Patents
Millimeter wave traveling wave tube diamond energy transmission window and processing method Download PDFInfo
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- CN105185677A CN105185677A CN201510483944.3A CN201510483944A CN105185677A CN 105185677 A CN105185677 A CN 105185677A CN 201510483944 A CN201510483944 A CN 201510483944A CN 105185677 A CN105185677 A CN 105185677A
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- diamond
- millimeter wave
- window
- traveling wave
- wave tube
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Abstract
The invention discloses a millimeter wave traveling wave tube diamond energy transmission window and a processing method. The energy transmission window comprises an upper metal piece (1), a lower metal piece (2) and a diamond window sheet (3) which is welded between the upper metal piece (1) and the lower metal piece (2) through a gold-based solder. The diamond window sheet (3) is welded between the upper metal piece (1) and the lower metal piece (2) through a plane welding mode. A thickness of the diamond window sheet (3) is 0.2+/-0.01mm. By using the millimeter wave traveling wave tube diamond energy transmission window provided in the invention, the structure is designed reasonably; a thermal conductivity of the millimeter wave energy transmission window can be increased and high frequency losses are reduced; output power and a work bandwidth of a millimeter wave traveling wave tube are increased and an important application value is possessed. By using the processing method of the millimeter wave traveling wave tube diamond energy transmission window, a technology design is reasonable, operability is high and industrialized processing production is easy.
Description
Technical field
The present invention relates to a kind of millimeter wave traveling wave tube delivery of energy window, be specifically related to a kind of millimeter wave traveling wave tube diamond delivery of energy window and processing technology thereof.
Background technology
Millimeter wave has high-resolution, high accuracy, high-energy-density, is millimetre-wave radar, new weapon, the desirable Millimeter-Wave Source of powerful electromagnetic interference and antagonism.Delivery of energy window is millimeter wave traveling wave tube important composition parts, and delivery of energy window needs to reduce high-frequency loss, improves the capacity of heat transmission, the delivery of energy window material of prior art and structural design not ideal enough, delivery efficiency is low, and high frequency loss is serious, and the capacity of heat transmission has much room for improvement.
Diamond belongs to covalent bond structure, and not containing glassy phase, the easy carbonization of high temperature sintering, cannot carry out conventional metallization process.Although the intensity of diamond own is higher, due to thinner thickness, higher structural stress cannot be born, easily burst in welding process.Conventional welding procedure cannot welded seal.
Summary of the invention
Goal of the invention: the object of the invention is to solve the deficiencies in the prior art, a kind of reasonable in design is provided, the thermal conductivity of millimeter wave delivery of energy window can be improved, reduce high-frequency loss, the power output of raising millimeter wave traveling wave tube that can be larger and the millimeter wave traveling wave tube diamond delivery of energy window of bandwidth of operation.Another object of the present invention is to provide the processing technology of welding the millimeter wave traveling wave tube diamond delivery of energy window of a difficult problem that can solve diamond and metal.
Technical scheme: in order to realize above object, the technical solution used in the present invention is:
A kind of millimeter wave traveling wave tube diamond delivery of energy window, it comprises: upper metalwork, lower metalwork, is welded on the diamond window between upper metalwork and lower metalwork by auri solder, described diamond window and be plane-welding between upper metalwork and lower metalwork;
The thickness of described diamond window is 0.2 ± 0.01mm.
Preferably, above-described millimeter wave traveling wave tube diamond delivery of energy window, the thickness of described diamond window is 0.2mm.
Preferably, above-described millimeter wave traveling wave tube diamond delivery of energy window, described diamond window and the solder side width between upper metalwork and lower metalwork are 0.6mm ~ 1mm.Under can ensureing bubble-tight prerequisite, reduce solder side.
A welding method for millimeter wave traveling wave tube diamond delivery of energy window, comprises the following steps:
1) diamond window and auri solder are assembled between upper metalwork and lower metalwork;
2) then send into soldering furnace, weld under vacuum conditions; Concrete welding condition is as follows:
A. vacuum degree is better than 5 × 10
-3pa;
B. welding temperature 900 DEG C ~ 1050 DEG C, temperature retention time 1 ~ 5 minute;
C. temperature rate < 300 DEG C/h;
3) take out after Temperature fall.
Preferably, the welding method of above-described millimeter wave traveling wave tube diamond delivery of energy window, described concrete welding condition is as follows:
A. vacuum degree is 1 ~ 5 × 10
-3pa;
B. welding temperature 950 DEG C ~ 1030 DEG C, temperature retention time 2 ~ 3 minutes;
C. temperature rate 100 ~ 300 DEG C/h.
From the viewpoint of adamantine characteristic and manufacturing cost, diamond delivery of energy window is mainly used in high-frequency millimeter wave traveling wave tube, and emphasis reduces high-frequency loss, improves the capacity of heat transmission.The present invention is optimized design by CST software, and to obtain good standing-wave ratio, can meet the diamond delivery of energy window size of the instructions for use of travelling wave tube, preferred diamond window thickness is about 0.2mm.Although the intensity of diamond own is higher, due to thinner thickness, higher structural stress cannot be born, easily burst in welding process.The present invention is by great many of experiments screening solder and optimum welding procedure, and diamond belongs to covalent bond structure, and not containing glassy phase, the easy carbonization of high temperature sintering, cannot carry out conventional metallization process.The present invention is screened by great many of experiments, and preferred active auri solder welds, and diamond effectively can be welded with metalwork.
Consider the welding temperature of delivery of energy window and the requirement of structure, we have carried out a large amount of repetition test to welding procedure, preferably best welding vacuum degree, welding temperature, temperature retention time and temperature rate, final acquisition optimised welding procedure condition and parameter:
A. vacuum degree is better than 5 × 10
- 3pa;
B. welding temperature 900 DEG C ~ 1050 DEG C, temperature retention time 1 ~ 5 minute;
C. temperature rate < 300 DEG C/h;
Adopt the above-mentioned welding procedure preferably obtained of the present invention, diamond can well be realized to weld with sealing alloy cylinder, there is not phenomenons such as bursting in good airproof performance.
Beneficial effect: millimeter wave traveling wave tube diamond delivery of energy window provided by the invention and processing technology thereof compared with prior art have the following advantages:
Millimeter wave traveling wave tube diamond delivery of energy window provided by the invention, reasonable in design, can improve the thermal conductivity of millimeter wave delivery of energy window, reduces high-frequency loss, can improve power output and the bandwidth of operation of millimeter wave traveling wave tube, have important using value.
The processing method of millimeter wave traveling wave tube diamond delivery of energy window provided by the invention, technological design is reasonable, and strong operability, is easy to industrialization processing.
Accompanying drawing explanation
Fig. 1 is the structural representation of millimeter wave traveling wave tube diamond delivery of energy window provided by the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
Embodiment 1
As shown in Figure 1, a kind of millimeter wave traveling wave tube diamond delivery of energy window, it is characterized in that, it comprises: upper metalwork (1), lower metalwork (2), the diamond window (3) between upper metalwork (1) and lower metalwork (2) is welded on, described diamond window (3) and be plane-welding between upper metalwork (1) and lower metalwork (2) by auri solder;
The thickness of described diamond window (3) is 0.2mm.
Performance test: get diamond delivery of energy window of the present invention compared with traditional delivery of energy window, carry out properties test, concrete test result is as shown in table 1:
The performance test results of table 1 diamond delivery of energy window and traditional delivery of energy window
Shown by the experimental result of above table 1, millimeter wave traveling wave tube diamond delivery of energy window provided by the invention has the performance index more superior than other delivery of energy window.
Embodiment 2
A welding method for millimeter wave traveling wave tube diamond delivery of energy window, comprises the following steps:
1) diamond window and auri solder are assembled between upper metalwork and lower metalwork;
2) then send into soldering furnace, weld under vacuum conditions; Concrete welding condition is as follows:
A. vacuum degree is 1 ~ 5 × 10
-3pa;
B. welding temperature 950 DEG C ~ 1030 DEG C, temperature retention time 2 ~ 3 minutes;
C. temperature rate 100 ~ 300 DEG C/h.
3) take out after Temperature fall.
Diamond delivery of energy window welds successfully, carries out related reliability checking work.Welded with sealing alloy cylinder by delivery of energy window component, run in pipe in sealing alloy cylinder lower end, and with the three-way welding connecing vacuum gauge, simulation delivery of energy window, at the operational environment of homogeneous tube, is exhausted baking at exhaust station.
Experimental condition is:
Hot Flue curing parameter: 550 DEG C, 25h.
Checking number: 5.
After exhaust bake-out, after opening baking oven, do not find gas leakage, after sealed-off deposits 10 days, detect vacuum degree and do not become.Prove that the present invention weld the diamond delivery of energy window sealing property that obtains by force, the vacuum-packed requirement of travelling wave tube can be met.Can be applied in travelling wave tube energy output system, high-frequency millimeter wave traveling wave tube bandwidth, power output can be improved.There is important using value.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a millimeter wave traveling wave tube diamond delivery of energy window, it is characterized in that, it comprises: upper metalwork (1), lower metalwork (2), the diamond window (3) between upper metalwork (1) and lower metalwork (2) is welded on, described diamond window (3) and be plane-welding between upper metalwork (1) and lower metalwork (2) by auri solder;
The thickness of described diamond window (3) is 0.2 ± 0.01mm.
2. millimeter wave traveling wave tube diamond delivery of energy window according to claim 1, is characterized in that, the thickness of described diamond window (3) is 0.2mm.
3. millimeter wave traveling wave tube diamond delivery of energy window according to claim 1, is characterized in that, described diamond window (3) and the solder side width between upper metalwork (1) and lower metalwork (2) are 0.6mm ~ 1mm.
4. a welding method for millimeter wave traveling wave tube diamond delivery of energy window, is characterized in that, comprise the following steps:
1) diamond window (3) and auri solder are assembled between upper metalwork (1) and lower metalwork (2);
2) then send into soldering furnace, weld under vacuum conditions; Concrete welding condition is as follows:
A. vacuum degree is better than 5 × 10
-3pa;
B. welding temperature 900 DEG C ~ 1050 DEG C, temperature retention time 1 ~ 5 minute;
C. temperature rate < 300 DEG C/h;
3) take out after Temperature fall.
5. the welding method of millimeter wave traveling wave tube diamond delivery of energy window according to claim 4, it is characterized in that, described concrete welding condition is as follows:
A. vacuum degree is 1 ~ 5 × 10
-3pa;
B. welding temperature 950 DEG C ~ 1030 DEG C, temperature retention time 2 ~ 3 minutes;
C. temperature rate 100 ~ 300 DEG C/h.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510483944.3A CN105185677A (en) | 2015-08-07 | 2015-08-07 | Millimeter wave traveling wave tube diamond energy transmission window and processing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510483944.3A CN105185677A (en) | 2015-08-07 | 2015-08-07 | Millimeter wave traveling wave tube diamond energy transmission window and processing method |
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| Publication Number | Publication Date |
|---|---|
| CN105185677A true CN105185677A (en) | 2015-12-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335798A (en) * | 2019-06-21 | 2019-10-15 | 西安交通大学 | A kind of diamond delivery of energy window and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003234074A (en) * | 2002-02-06 | 2003-08-22 | Japan Atom Energy Res Inst | Vacuum window for high-frequency and gyrotron device |
| CN103236390A (en) * | 2013-04-16 | 2013-08-07 | 中国电子科技集团公司第十二研究所 | Diamond energy transmission window for short millimeter wave traveling tubes and manufacturing method of diamond energy transmission window |
| CN103779154A (en) * | 2014-01-10 | 2014-05-07 | 中国电子科技集团公司第十二研究所 | Diamond energy transmission window sheet for terahertz-band vacuum device and manufacturing method thereof |
-
2015
- 2015-08-07 CN CN201510483944.3A patent/CN105185677A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003234074A (en) * | 2002-02-06 | 2003-08-22 | Japan Atom Energy Res Inst | Vacuum window for high-frequency and gyrotron device |
| CN103236390A (en) * | 2013-04-16 | 2013-08-07 | 中国电子科技集团公司第十二研究所 | Diamond energy transmission window for short millimeter wave traveling tubes and manufacturing method of diamond energy transmission window |
| CN103779154A (en) * | 2014-01-10 | 2014-05-07 | 中国电子科技集团公司第十二研究所 | Diamond energy transmission window sheet for terahertz-band vacuum device and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
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| 李新宇 等: "CVD金刚石在电真空器件中的应用", 《真空电子技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335798A (en) * | 2019-06-21 | 2019-10-15 | 西安交通大学 | A kind of diamond delivery of energy window and preparation method thereof |
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Application publication date: 20151223 |