CN113524817A - Tantalum-nickel composite board and preparation method thereof - Google Patents
Tantalum-nickel composite board and preparation method thereof Download PDFInfo
- Publication number
- CN113524817A CN113524817A CN202110819485.7A CN202110819485A CN113524817A CN 113524817 A CN113524817 A CN 113524817A CN 202110819485 A CN202110819485 A CN 202110819485A CN 113524817 A CN113524817 A CN 113524817A
- Authority
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- Prior art keywords
- tantalum
- nickel
- plate
- composite plate
- explosive
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Links
- 239000002131 composite material Substances 0.000 title claims abstract description 53
- VMJRMGHWUWFWOB-UHFFFAOYSA-N nickel tantalum Chemical compound [Ni].[Ta] VMJRMGHWUWFWOB-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000002360 explosive Substances 0.000 claims abstract description 58
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 36
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 31
- 238000005096 rolling process Methods 0.000 claims abstract description 28
- 238000000137 annealing Methods 0.000 claims abstract description 24
- 238000004880 explosion Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 238000005498 polishing Methods 0.000 claims abstract description 7
- 238000005253 cladding Methods 0.000 claims abstract description 5
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 18
- 239000002283 diesel fuel Substances 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- -1 tantalum-nickel metals Chemical class 0.000 abstract description 2
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 235000002639 sodium chloride Nutrition 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000013329 compounding Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000005474 detonation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000733322 Platea Species 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910001174 tin-lead alloy Inorganic materials 0.000 description 1
- 239000000015 trinitrotoluene Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/10—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/145—Liquid electrolytic capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/746—Slipping, anti-blocking, low friction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/16—Capacitors
Abstract
The invention relates to the technical field of heat dissipation plates, and particularly provides a tantalum-nickel composite plate and a preparation method thereof. The preparation method specifically comprises the following steps: polishing the tantalum plate and the nickel plate to remove oil stains, impurities and oxide layers on the surfaces of the tantalum plate and the nickel plate to obtain the processed tantalum plate and the processed nickel plate; placing the processed nickel plate on a platform, uniformly arranging a plurality of support frames, placing the processed tantalum plate on the support frames, and laying explosives for explosive cladding to obtain a tantalum-nickel explosive composite plate; and carrying out multi-pass rolling and vacuum annealing on the tantalum-nickel explosion composite plate, then carrying out precision rolling and high vacuum annealing, and naturally cooling to obtain the tantalum-nickel explosion composite plate. The tantalum-nickel composite board obtained by the method has the advantages of tight bonding between tantalum-nickel metals, flat bonding surface without wave shape, uniform thickness and stable product performance, and can be used for capacitor shells.
Description
Technical Field
The invention relates to the technical field of metal composite plates, and particularly provides a tantalum-nickel composite plate and a preparation method thereof.
Background
Tantalum is a metal with hard texture, high melting point, high ductility, small expansion coefficient, high toughness and high corrosion resistance, and has wide application fields, especially in capacitors.
In the prior art, the shell and the cover body for the tantalum capacitor are processed by pure tantalum, and because tantalum belongs to a powder metallurgy material, crystal grains can be increased in the processing process of plastic deformation such as stamping, stretching and the like, so that the surface hardness of the material is increased rapidly, the hardening phenomenon of the material is serious, and the defects of scratches and pits are easy to occur, so that the yield of products is low, and the size consistency of the products is difficult to guarantee; in addition, pure tantalum is used as a shell, nickel wires are welded on carbon in an external electric connection mode, and due to the difference between the expansion coefficient and the melting point of the two metals, the joint of the two metals is stable, so that the reliability of the whole machine is affected, and therefore, a composite material which is high in yield, free of defects after processing, easy to install and good in reliability needs to be developed.
Disclosure of Invention
Aiming at the problems in the prior art, the tantalum-nickel composite plate which is good in formability, free of defects, easy to install and good in reliability is obtained after the tantalum plate and the nickel plate are subjected to explosive cladding, multi-pass rolling and annealing and natural cooling.
In order to achieve the above object, the present invention provides a method for preparing a tantalum-nickel composite plate, wherein the method specifically comprises:
polishing the tantalum plate and the nickel plate to remove oil stains, impurities and oxide layers on the surfaces of the tantalum plate and the nickel plate to obtain the processed tantalum plate and the processed nickel plate;
placing the processed nickel plate on a platform, uniformly arranging a plurality of support frames, placing the processed tantalum plate on the support frames, and laying explosives for explosive cladding to obtain a tantalum-nickel explosive composite plate;
and carrying out multi-pass rolling and vacuum annealing on the tantalum-nickel explosion composite plate, then carrying out precision rolling and high vacuum annealing, and naturally cooling to obtain the tantalum-nickel explosion composite plate.
Furthermore, the thickness of the nickel plate and the tantalum plate is 10-20 mm.
Further, the height of the support frame is 3-5 mm.
Further, the explosive is expanded ammonium nitrate, No. 2 rock ammonium nitrate explosive, 94.5 percent of porous ammonium nitrate, 5.5 percent of diesel oil, powdery emulsion explosive and common salt or TNT explosive, the dosage of the explosive is 2-5g/cm3, and the explosion speed is 2600-3200 m/s.
Further, after the tantalum-nickel explosive composite plate is rolled for multiple times and annealed in vacuum, the steps of precision rolling and high vacuum annealing are carried out, and the method specifically comprises the following steps:
the deformation rate of each rolling in the multi-pass rolling process is 35-65%;
the vacuum annealing temperature is 1000-;
the deformation rate of the precision rolling is 10-20%; the temperature of the high vacuum annealing is 850-1150 ℃, and the time is 0.5-12 h.
Based on the same inventive concept, the embodiment of the invention also provides a tantalum-nickel composite plate, and the tantalum-nickel composite plate is prepared by the preparation method.
Based on the same inventive concept, the embodiment of the invention also provides application of the tantalum-nickel composite plate in a capacitor shell and a cover body, and the tantalum-nickel composite plate is prepared by the preparation method.
Has the advantages that:
according to the invention, the tantalum-nickel composite board is obtained by explosion cladding and rolling of the nickel board and the tantalum board, the tantalum-nickel metals are tightly combined, the combined surface is flat and has no wave shape, the thickness is uniform, the product performance is stable, the tantalum-nickel composite board is processed into the capacitor shell, the appearance is smooth, no scratch, pit and bump are generated, the yield is high, the outer surface is not required to be polished, the production cost is reduced, and the production efficiency is improved; the capacitor shell formed by the tantalum-nickel composite plate uses tantalum as an inner layer, so that long-term stable operation of the liquid tantalum electrolytic capacitor is guaranteed, nickel is used as an outer layer, the outer layer has good wettability with tin-lead alloy, the shell can be directly welded on a circuit board, and long-term reliability of welding is guaranteed.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to specific embodiments, but the scope of the present invention is not limited to the following specific embodiments.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Unless otherwise specifically stated, various raw materials, instruments, equipment and the like used in the present invention are commercially available or can be prepared by an existing method.
In the embodiment of the invention, the preparation method of the tantalum-nickel composite plate comprises the following steps:
polishing the tantalum plate and the nickel plate to remove oil stains, impurities and oxide layers on the surfaces of the tantalum plate and the nickel plate to obtain the processed tantalum plate and the processed nickel plate; placing the processed nickel plate on a platform, uniformly arranging a plurality of red copper support frames, placing the processed tantalum plate on the support frames, and laying explosives, wherein the explosives are expanded ammonium nitrate, No. 2 rock ammonium nitrate explosive, 94.5% of porous ammonium nitrate, 5.5% of diesel oil, powdery emulsion explosive and salt or TNT explosive, and the laying amount of the explosives is 2-5g/cm3Detonating from the middle part of the explosive, and performing explosive compounding at the detonation velocity of 2600-3200m/s to obtain the tantalum-nickel explosive composite plate; carrying out multi-pass rolling and vacuum annealing on the tantalum-nickel explosion composite plate, then carrying out precision rolling and high vacuum annealing, and naturally cooling to obtain the tantalum-nickel composite plate, wherein the deformation rate of each rolling in the multi-pass rolling process is 35-65%; the vacuum annealing temperature is 1000-; the deformation rate of the precision rolling is 10-20%; the temperature of the high vacuum annealing is 850-1150 ℃, and the time is 0.5-12 h.
The following examples are further illustrative.
Example 1
The embodiment provides a circular tantalum-nickel composite plate, and the preparation method comprises the following steps:
polishing the 10mm tantalum plate and the 12mm nickel plate to remove oil stains, impurities and oxide layers on the surfaces to obtain the treated tantalum plate and nickel plateA plate; placing the processed nickel plate on a platform, uniformly arranging a plurality of red copper support frames, placing the processed tantalum plate on the support frames, and laying explosives, wherein the explosives are expanded ammonium nitrate, No. 2 rock ammonium nitrate explosive, 94.5% of porous ammonium nitrate, 5.5% of diesel oil, powdery emulsion explosive and salt or TNT explosive, and the laying amount of the explosives is 3g/cm3Detonating from the middle part of the explosive, and performing explosive compounding at the detonation velocity of 2600-2800m/s to obtain the tantalum-nickel explosive composite plate; and (3) rolling the tantalum-nickel explosion composite plate for 3 times according to the deformation rate of 30% each time, carrying out vacuum annealing for 50min at 1000 ℃, then carrying out precision rolling according to the deformation rate of 15%, carrying out high vacuum annealing for 6h at 950 ℃, and naturally cooling to obtain the tantalum-nickel composite plate.
Example 2
The embodiment provides a circular tantalum-nickel composite plate, and the preparation method comprises the following steps:
polishing the 15mm tantalum plate and the 15mm nickel plate to remove oil stains, impurities and oxide layers on the surfaces, and obtaining the processed tantalum plate and nickel plate; placing the processed nickel plate on a platform, uniformly arranging a plurality of red copper support frames, placing the processed tantalum plate on the support frames, and laying explosives, wherein the explosives are expanded ammonium nitrate, No. 2 rock ammonium nitrate explosive, 94.5% of porous ammonium nitrate, 5.5% of diesel oil, powdery emulsion explosive and salt or TNT explosive, and the laying amount of the explosives is 4g/cm3Detonating from the middle part of the explosive, and performing explosive compounding at the detonation velocity of 3000-3200m/s to obtain the tantalum-nickel explosive composite plate; and (3) rolling the tantalum-nickel explosion composite plate for 3 times according to the deformation rate of 45% each time, carrying out vacuum annealing at 1200 ℃ for 100min, then carrying out precision rolling according to the deformation rate of 10%, carrying out high vacuum annealing at 850 ℃ for 10h, and naturally cooling to obtain the tantalum-nickel composite plate.
Example 3
The embodiment provides a circular tantalum-nickel composite plate, and the preparation method comprises the following steps:
polishing the 18mm tantalum plate and the 20mm nickel plate to remove oil stains, impurities and oxide layers on the surfaces, and obtaining the processed tantalum plate and nickel plate; placing the processed nickel plate on a platform, and uniformly distributing a plurality of red copper supportsThe processed tantalum plate is placed on a support frame, and explosives are laid on the support frame, wherein the explosives are expanded ammonium nitrate, No. 2 rock ammonium nitrate explosive, 94.5% of porous ammonium nitrate, 5.5% of diesel oil, powdery emulsion explosive and salt or TNT explosive, and the laying amount of the explosives is 5g/cm3Detonating from the middle part of the explosive, and performing explosive compounding at the detonation velocity of 2800 and 3000m/s to obtain the tantalum-nickel explosive composite plate; and (3) rolling the tantalum-nickel explosion composite plate for 4 times according to the deformation rate of 55% each time, carrying out vacuum annealing at 1350 ℃ for 30min, then carrying out precision rolling according to the deformation rate of 10%, carrying out high vacuum annealing at 1150 ℃ for 1.0h, and naturally cooling to obtain the tantalum-nickel composite plate.
The tantalum-nickel composite board obtained by the embodiment has the advantages that the tantalum-nickel metal is tightly combined, the combined surface is flat and has no wave shape, the thickness is uniform, the product performance is stable, the tantalum-nickel composite board can be used for a capacitor shell, the surface is smooth, no scratch, no pit and no bump are generated, the yield is high, the outer surface is not required to be polished, the production cost is reduced, and the production efficiency is improved.
The above-mentioned embodiments are only preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical scope of the present invention, and equivalents and modifications of the technical solutions and concepts of the present invention should be covered by the scope of the present invention.
Claims (7)
1. The preparation method of the tantalum-nickel composite plate is characterized by specifically comprising the following steps of:
polishing the tantalum plate and the nickel plate to remove oil stains, impurities and oxide layers on the surfaces of the tantalum plate and the nickel plate to obtain the processed tantalum plate and the processed nickel plate;
placing the processed nickel plate on a platform, uniformly arranging a plurality of support frames, placing the processed tantalum plate on the support frames, and laying explosives for explosive cladding to obtain a tantalum-nickel explosive composite plate;
and carrying out multi-pass rolling and vacuum annealing on the tantalum-nickel explosion composite plate, then carrying out precision rolling and high vacuum annealing, and naturally cooling to obtain the tantalum-nickel explosion composite plate.
2. The method for preparing a tantalum-nickel composite plate according to claim 1, wherein the thickness of the nickel plate and the tantalum plate is 10-20 mm.
3. The method for preparing the tantalum-nickel composite plate according to claim 1, wherein the height of the support frame is 3-5 mm.
4. The method for preparing the tantalum-nickel composite plate according to claim 1, wherein the explosive is expanded ammonium nitrate, rock ammonium nitrate explosive No. 2, porous ammonium nitrate 94.5%, diesel oil 5.5%, powdery emulsion explosive and salt or TNT explosive, and the dosage of the explosive is 2-5g/cm3The explosion speed is 2600-.
5. The method for preparing the tantalum-nickel composite plate according to claim 1, wherein the tantalum-nickel explosive composite plate is subjected to multi-pass rolling and vacuum annealing, and then is subjected to precision rolling and high vacuum annealing, and the method specifically comprises the following steps:
the deformation rate of each rolling in the multi-pass rolling process is 35-65%;
the vacuum annealing temperature is 1000-;
the deformation rate of the precision rolling is 10-20%; the temperature of the high vacuum annealing is 850-1150 ℃, and the time is 0.5-12 h.
6. A tantalum-nickel composite plate, wherein the tantalum-nickel composite plate is prepared by the preparation method as set forth in any one of claims 1-5.
7. Use of a tantalum-nickel composite plate in a capacitor case and a cover, said tantalum-nickel composite plate being obtained by the method of any of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110819485.7A CN113524817B (en) | 2021-07-20 | 2021-07-20 | Tantalum-nickel composite board and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110819485.7A CN113524817B (en) | 2021-07-20 | 2021-07-20 | Tantalum-nickel composite board and preparation method thereof |
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| Publication Number | Publication Date |
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| CN113524817A true CN113524817A (en) | 2021-10-22 |
| CN113524817B CN113524817B (en) | 2022-09-20 |
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| CN101840783A (en) * | 2010-04-16 | 2010-09-22 | 株洲宏达电子有限公司 | Lead-out method for lead-out wire of tantalum electrolytic capacitor of full tantalum shell and capacitor |
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2021
- 2021-07-20 CN CN202110819485.7A patent/CN113524817B/en active Active
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|---|---|---|---|---|
| CN1359765A (en) * | 2000-01-27 | 2002-07-24 | 郑远谋 | Process for preparing composite aluminium alloy solder used by explosion welding |
| CN1374160A (en) * | 2002-04-25 | 2002-10-16 | 西北有色金属研究院 | Prepn of composite Ti-Ni filament for spectacles rims |
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| Publication number | Publication date |
|---|---|
| CN113524817B (en) | 2022-09-20 |
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Denomination of invention: A tantalum nickel composite plate and its preparation method Effective date of registration: 20231220 Granted publication date: 20220920 Pledgee: Agricultural Bank of China Limited Zhuzhou branch Pledgor: HUNAN HUARAN TECHNOLOGY Co.,Ltd. Registration number: Y2023980073211 |
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