CN111037089A - Preparation method of bimetallic strip of magnesium alloy and silver-plated copper foil - Google Patents
Preparation method of bimetallic strip of magnesium alloy and silver-plated copper foil Download PDFInfo
- Publication number
- CN111037089A CN111037089A CN201911316146.6A CN201911316146A CN111037089A CN 111037089 A CN111037089 A CN 111037089A CN 201911316146 A CN201911316146 A CN 201911316146A CN 111037089 A CN111037089 A CN 111037089A
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- Prior art keywords
- magnesium alloy
- silver
- copper foil
- plated copper
- stainless steel
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Links
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 73
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 239000011889 copper foil Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title description 3
- 238000003466 welding Methods 0.000 claims abstract description 71
- 238000000034 method Methods 0.000 claims abstract description 26
- 239000010935 stainless steel Substances 0.000 claims description 66
- 229910001220 stainless steel Inorganic materials 0.000 claims description 66
- 229910052782 aluminium Inorganic materials 0.000 claims description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 25
- 229920000742 Cotton Polymers 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000010301 surface-oxidation reaction Methods 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 239000010425 asbestos Substances 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 229910052895 riebeckite Inorganic materials 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims 1
- 239000013078 crystal Substances 0.000 abstract description 12
- 238000009792 diffusion process Methods 0.000 abstract description 12
- 239000013535 sea water Substances 0.000 abstract description 5
- 208000032953 Device battery issue Diseases 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000006557 surface reaction Methods 0.000 abstract description 3
- 230000003628 erosive effect Effects 0.000 abstract description 2
- 238000003411 electrode reaction Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- IQZSIMIBEUQIQB-UHFFFAOYSA-M chlorosilver;magnesium Chemical compound [Mg].[Ag]Cl IQZSIMIBEUQIQB-UHFFFAOYSA-M 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/14—Preventing or minimising gas access, or using protective gases or vacuum during welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
Abstract
A method for preparing a bimetallic strip of magnesium alloy and silver-plated copper foil can enable a thicker magnesium alloy plate and the silver-plated copper foil to be firmly welded, so that the problem of short battery discharge time of a water-activated battery caused by magnesium alloy negative electrode reaction cavitation erosion is solved. The invention provides a method for preparing a bimetallic strip of a magnesium alloy and a silver-plated copper foil, which is characterized in that the magnesium alloy and the silver-plated copper foil are welded at a welding temperature of 380-400 ℃, the welding temperature provides proper energy for atomic diffusion, the atomic diffusion is sufficient, large crystal grain boundaries migrate out of an initial connection position, common crystal grains are generated between the connection crystal boundaries, a good diffusion welding joint structure is generated, the welding is firm, the crystal grains grow and diffuse uniformly at the temperature, the surface reaction of the magnesium alloy used as a negative electrode is uniform, the battery failure caused by pitting corrosion is avoided, the battery can discharge for a long time, and the working time of a long-life seawater battery is prolonged to 9 hours from the original 5 hours.
Description
Technical Field
The invention belongs to the technical field of seawater batteries, and particularly relates to a preparation method of a bimetallic strip of magnesium alloy and silver-plated copper foil.
Background
The long-life magnesium-silver chloride seawater battery is used as a buoy power supply due to the characteristics of quick activation, long working time, long storage life, safe use and the like. The cathode magnesium alloy and the isolation metal foil are bonded together by coating the periphery of the adhesive, but the reaction of the cathode magnesium alloy is uneven and is easy to generate cavitation erosion, so that the electrolyte enters between the cathode and the isolation metal foil to increase the internal resistance of the battery, shorten the discharge time of the battery and even fail to meet the use requirement. The gluing process is time-consuming and labor-consuming in operation, the production quantity per day is limited, and the adhesive has certain harm to human health. The welding technology provided by the patent of 'a diffusion welding method of dissimilar metals' with the publication number of CN106808078A causes the hydrogen evolution quantity of the battery to be overlarge, and the vacuum diffusion welding technology provided by the paper 'influence of vacuum diffusion welding on the performance of a magnesium alloy electrode' (power technology, 2011 5 th, 537-539 page) cannot completely weld thick and large-area magnesium alloy weldments.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method for preparing a bimetallic strip of magnesium alloy and silver-plated copper foil, comprising the steps of:
selecting X magnesium alloy sheets, X silver-plated copper foil sheets, (X +1) stainless steel sheets and 1 aluminum plate; the length and the width of the bottom surfaces of the magnesium alloy sheet and the silver-plated copper foil sheet are equal, the length and the width of the bottom surface of the stainless steel sheet are both correspondingly greater than the length and the width of the bottom surface of the magnesium alloy sheet, the length and the width of the bottom surface of the aluminum plate are both correspondingly greater than the length and the width of the bottom surface of the stainless steel sheet, the surfaces of the magnesium alloy sheet and the silver-plated copper foil sheet are flat and not oxidized, the surface of the stainless steel sheet is flat, the oxidation area of the stainless steel sheet is less than or equal to 1/3 of the total area, and the thickness of the stainless steel sheet is less than that of;
dividing X magnesium alloy sheets, X silver-plated copper foil sheets and X stainless steel sheets into X welding groups; each welding group comprises one stainless steel sheet, one magnesium alloy sheet and one silver-plated copper foil which are orderly stacked from bottom to top;
placing the aluminum plate on a heater in a vacuum chamber of a welding device;
orderly stacking X welding groups on the aluminum plate; in two adjacent welding groups, the stainless steel sheets in the first welding group are orderly stacked on the silver-plated copper foil in the second welding group, and the projection of the welding group at the bottommost end on the aluminum plate is positioned in the bottom surface of the welding group;
stacking the remaining one of the stainless steel sheets on the Xth silver-plated copper foil; wherein, the projection of the X-th welding group on the stainless steel sheet is positioned in the bottom surface of the stainless steel sheet;
setting parameters of the welding equipment; wherein the vacuum degree in the vacuum chamber is-0.8 kgf/cm 2-1.0 kgf/cm2, the welding temperature of the heater is 380-400 ℃, the constant temperature time of the heater is 60-90 min, and the welding pressure of the heater is 16-18 MPa;
starting the welding equipment and operating according to the set parameters;
after the welding is finished and the temperature of the welding equipment is reduced to the room temperature, pressing an air inlet valve button on the vacuum chamber to release the pressure in the vacuum chamber;
and taking out X bimetallic strips.
Preferably, the bottom surfaces of the magnesium alloy sheet, the silver-plated copper foil sheet, the stainless steel sheet and the aluminum plate are all square.
Preferably, the length and width of the bottom surfaces of the magnesium alloy sheet and the silver-plated copper foil sheet are both 400 mm.
Preferably, the length and the width of the bottom surface of the stainless steel sheet are both 420 mm.
Preferably, the thickness of the stainless steel sheet is 1/2 times the thickness of the magnesium alloy sheet.
Preferably, the thickness of the stainless steel sheet is 0.5mm, and the thickness of the magnesium alloy sheet is 1 mm.
Preferably, before placing the aluminum plate on a heater in a vacuum chamber of a welding apparatus, the method further comprises the steps of:
and 2-3 asbestos plates are placed on the working plane of the heater.
Preferably, before selecting X pieces of magnesium alloy, X pieces of silver-plated copper foil, X +1 pieces of stainless steel, and 1 piece of aluminum, further comprising the steps of:
and wiping the magnesium alloy sheet, the silver-plated copper foil sheet and the stainless steel sheet by alcohol cotton.
Preferably, the method further comprises the following steps after wiping the stainless steel sheet by alcohol cotton:
1/3 judging whether the surface oxidation area of the stainless steel sheet exceeds the total area;
if so, cleaning the surface of the glass substrate by using a dilute hydrochloric acid solution with the mass fraction of 7-8%, and circulating the judging operation;
if not, selecting the stainless steel sheet as a raw material.
The invention provides a method for preparing a bimetallic strip of a magnesium alloy and a silver-plated copper foil, which is characterized in that the magnesium alloy and the silver-plated copper foil are welded at a welding temperature of 380-400 ℃, the welding temperature provides proper energy for atomic diffusion, the atomic diffusion is sufficient, large crystal grain boundaries migrate out of an initial connection position, common crystal grains are generated between the connection crystal boundaries, a good diffusion welding joint structure is generated, the welding is firm, the crystal grains grow and diffuse uniformly at the temperature, the surface reaction of the magnesium alloy used as a negative electrode is uniform, the battery failure caused by pitting corrosion is avoided, the battery can discharge for a long time, and the working time of a long-life seawater battery is prolonged to 9 hours from the original 5 hours.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for preparing a bimetallic strip of magnesium alloy and silver-plated copper foil according to the present invention;
fig. 2 is a schematic structural diagram of raw materials in the method for preparing the bimetallic strip of magnesium alloy and silver-plated copper foil provided by the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
In an embodiment of the present application, as shown in fig. 1 and 2, there is provided a method for preparing a bimetal of a magnesium alloy and a silver-plated copper foil, the method including the steps of:
s101: selecting X magnesium alloy sheets 10, X silver-plated copper foil sheets 20, (X +1) stainless steel sheets 30 and 1 aluminum plate 40; wherein, X is the positive integer that is greater than 0, magnesium alloy piece 10 with the length and the width of silvered copper foil piece 20 bottom surface are equal, stainless steel piece 30 bottom surface length and width all correspond and are greater than magnesium alloy piece 10 bottom surface length and width, aluminum plate 40 bottom surface length and width all correspond and are greater than stainless steel piece 30 bottom surface length and width, magnesium alloy piece 10 with silvered copper foil piece 20 surfacing and unoxidized, stainless steel piece 30 surfacing and the 1/3 of oxidation area less than or equal to total area, stainless steel piece 30 thickness is less than magnesium alloy piece 10 thickness.
In the embodiment of the present application, the bottom surfaces of the magnesium alloy sheet 10, the silver-plated copper foil sheet 20, the stainless steel sheet 30, and the aluminum sheet 40 are all square.
Further, in the present embodiment, the length and width of the bottom surface of the magnesium alloy sheet 10 and the silver-plated copper foil sheet 20 are both 400mm, and the length and width of the bottom surface of the stainless steel sheet 30 are both 420 mm.
In the present embodiment, the thickness of the stainless steel sheet 30 is 1/2 the thickness of the magnesium alloy sheet 10.
Further, in the present embodiment, the stainless steel sheet 30 has a thickness of 0.5mm, and the magnesium alloy sheet 10 has a thickness of 1 mm.
S102: dividing X pieces of the magnesium alloy sheets 10, X pieces of the silver-plated copper foil sheets 20 and X pieces of the stainless steel sheets 30 into X welding groups; wherein, each welding group comprises one stainless steel sheet 30, one magnesium alloy sheet 10 and one silver-plated copper foil sheet 20 which are orderly stacked from bottom to top.
In this step, in each welding group, the stainless steel sheet 30, the magnesium alloy sheet 10 and the silver-plated copper foil sheet 20 are orderly stacked from bottom to top, and the orderly stacking means that the edges of the magnesium alloy sheet 10 and the silver-plated copper foil sheet 20 face each other, and the stainless steel sheet 30 coincides with the physical center of the magnesium alloy sheet 10.
S103: the aluminum plate 40 is placed on a heater 50 within the vacuum chamber of the welding apparatus.
S104: sequentially and orderly stacking X welding groups on the aluminum plate 40; in two adjacent welding groups, the stainless steel sheet 30 in the first welding group is neatly stacked on the silver-plated copper foil sheet 20 in the second welding group, and the projection of the bottommost welding group on the aluminum plate 40 is located in the bottom surface.
In this step, the welding groups are sequentially and neatly stacked on the aluminum plate 40, which means that the edges of the welding groups are aligned with each other.
S105: stacking the remaining one of the stainless steel sheets 30 on the xth one of the silver-plated copper foils 20; wherein, the projection of the X-th welding group on the stainless steel sheet 30 is positioned in the bottom surface thereof.
S106: setting parameters of the welding equipment; wherein the vacuum degree in the vacuum chamber is-0.8 kgf/cm 2-1.0 kgf/cm2, the welding temperature of the heater 50 is 380-400 ℃, the constant temperature time of the heater 50 is 60-90 min, and the welding pressure of the heater 50 is 16-18 MPa.
S107: and starting the welding equipment and operating according to the set parameters.
S108: and after the welding is finished and the temperature of the welding equipment is reduced to the room temperature, pressing a button of an air inlet valve on the vacuum chamber to discharge the pressure in the vacuum chamber.
S109: and taking out X bimetallic strips.
In the embodiment of the present application, before placing the aluminum plate 40 on the heater 50 in the vacuum chamber of the welding apparatus in step S103, the method further includes the steps of:
and 2-3 asbestos plates are placed on the working plane of the heater 50. The asbestos plate can be placed for heat preservation.
In the embodiment of the present application, before selecting X magnesium alloy sheets 10, X silver-plated copper foil sheets 20, (X +1) stainless steel sheets 30, and 1 aluminum sheet 40 in step S101, the method further includes the steps of:
the magnesium alloy sheet 10, the silver-plated copper foil sheet 20, and the stainless steel sheet 30 were wiped with alcohol cotton.
The surfaces of the magnesium alloy sheet 10, the silver-plated copper foil sheet 20 and the stainless steel sheet 30 may be cleaned by using alcohol cotton to provide a clean welding surface for subsequent welding.
In the embodiment of the present application, the method further comprises the following steps after wiping the stainless steel sheet 30 with alcohol cotton:
1/3 judging whether the surface oxidation area of the stainless steel sheet 30 exceeds the total area;
if so, cleaning the surface of the glass substrate by using a dilute hydrochloric acid solution with the mass fraction of 7-8%, and circulating the judging operation;
if not, the stainless steel sheet 30 is selected as a raw material.
When the surface oxidation area of the stainless steel sheet 30 exceeds 1/3 of the total area, the subsequent welding work is disturbed, so that the oxidation layer on the surface of the stainless steel sheet 30 needs to be treated, and at the moment, the surface is cleaned by a dilute hydrochloric acid solution with the mass fraction of 7-8% until the surface oxidation area is less than or equal to 1/3 of the total area.
The invention provides a method for preparing a bimetallic strip of a magnesium alloy and a silver-plated copper foil, which is characterized in that the magnesium alloy and the silver-plated copper foil are welded at a welding temperature of 380-400 ℃, the welding temperature provides proper energy for atomic diffusion, the atomic diffusion is sufficient, large crystal grain boundaries migrate out of an initial connection position, common crystal grains are generated between the connection crystal boundaries, a good diffusion welding joint structure is generated, the welding is firm, the crystal grains grow and diffuse uniformly at the temperature, the surface reaction of the magnesium alloy used as a negative electrode is uniform, the battery failure caused by pitting corrosion is avoided, the battery can discharge for a long time, and the working time of a long-life seawater battery is prolonged to 9 hours from the original 5 hours.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (9)
1. A method for preparing a bimetallic strip of magnesium alloy and silver-plated copper foil is characterized by comprising the following steps:
selecting X magnesium alloy sheets, X silver-plated copper foil sheets, (X +1) stainless steel sheets and 1 aluminum plate; the length and the width of the bottom surfaces of the magnesium alloy sheet and the silver-plated copper foil sheet are equal, the length and the width of the bottom surface of the stainless steel sheet are both correspondingly greater than the length and the width of the bottom surface of the magnesium alloy sheet, the length and the width of the bottom surface of the aluminum plate are both correspondingly greater than the length and the width of the bottom surface of the stainless steel sheet, the surfaces of the magnesium alloy sheet and the silver-plated copper foil sheet are flat and not oxidized, the surface of the stainless steel sheet is flat, the oxidation area of the stainless steel sheet is less than or equal to 1/3 of the total area, and the thickness of the stainless steel sheet is less than that of;
dividing X magnesium alloy sheets, X silver-plated copper foil sheets and X stainless steel sheets into X welding groups; each welding group comprises one stainless steel sheet, one magnesium alloy sheet and one silver-plated copper foil which are orderly stacked from bottom to top;
placing the aluminum plate on a heater in a vacuum chamber of a welding device;
orderly stacking X welding groups on the aluminum plate; in two adjacent welding groups, the stainless steel sheets in the first welding group are orderly stacked on the silver-plated copper foil in the second welding group, and the projection of the welding group at the bottommost end on the aluminum plate is positioned in the bottom surface of the welding group;
stacking the remaining one of the stainless steel sheets on the Xth silver-plated copper foil; wherein, the projection of the X-th welding group on the stainless steel sheet is positioned in the bottom surface of the stainless steel sheet;
setting parameters of the welding equipment; wherein the vacuum degree in the vacuum chamber is-0.8 kgf/cm 2-1.0 kgf/cm2, the welding temperature of the heater is 380-400 ℃, the constant temperature time of the heater is 60-90 min, and the welding pressure of the heater is 16-18 MPa;
starting the welding equipment and operating according to the set parameters;
after the welding is finished and the temperature of the welding equipment is reduced to the room temperature, pressing an air inlet valve button on the vacuum chamber to release the pressure in the vacuum chamber;
and taking out X bimetallic strips.
2. The method for preparing a bimetallic strip of magnesium alloy and silver-plated copper foil according to claim 1, wherein the bottom surfaces of the magnesium alloy strip, the silver-plated copper foil, the stainless steel strip and the aluminum plate are square.
3. The method for preparing a bimetal of magnesium alloy and silver-plated copper foil according to claim 2, wherein the length and width of the bottom surfaces of the magnesium alloy sheet and the silver-plated copper foil are both 400 mm.
4. The method for preparing a bimetallic strip of magnesium alloy and silver-plated copper foil according to claim 2, wherein the length and width of the bottom surface of the stainless steel strip are both 420 mm.
5. The method for preparing a bimetallic strip of magnesium alloy and silver-plated copper foil according to claim 1, wherein the thickness of the stainless steel sheet is 1/2 times the thickness of the magnesium alloy sheet.
6. The method for preparing a bimetallic strip of magnesium alloy and silver-plated copper foil according to claim 5, wherein the thickness of the stainless steel sheet is 0.5mm, and the thickness of the magnesium alloy sheet is 1 mm.
7. The method for preparing a bimetal of magnesium alloy and silver-plated copper foil according to claim 1, further comprising the steps of, before placing the aluminum plate on a heater in a vacuum chamber of a soldering apparatus:
and 2-3 asbestos plates are placed on the working plane of the heater.
8. The method for preparing a bimetal of magnesium alloy and silver-plated copper foil according to claim 1, further comprising the steps of, before selecting X magnesium alloy sheets, X silver-plated copper foil sheets, (X +1) stainless steel sheets and 1 aluminum sheet:
and wiping the magnesium alloy sheet, the silver-plated copper foil sheet and the stainless steel sheet by alcohol cotton.
9. The method for preparing a bimetallic strip of magnesium alloy and silver-plated copper foil according to claim 8, further comprising the step of, after wiping the stainless steel strip with alcohol cotton:
1/3 judging whether the surface oxidation area of the stainless steel sheet exceeds the total area;
if so, cleaning the surface of the glass substrate by using a dilute hydrochloric acid solution with the mass fraction of 7-8%, and circulating the judging operation;
if not, selecting the stainless steel sheet as a raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911316146.6A CN111037089A (en) | 2019-12-19 | 2019-12-19 | Preparation method of bimetallic strip of magnesium alloy and silver-plated copper foil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911316146.6A CN111037089A (en) | 2019-12-19 | 2019-12-19 | Preparation method of bimetallic strip of magnesium alloy and silver-plated copper foil |
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| CN111037089A true CN111037089A (en) | 2020-04-21 |
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| CN201911316146.6A Pending CN111037089A (en) | 2019-12-19 | 2019-12-19 | Preparation method of bimetallic strip of magnesium alloy and silver-plated copper foil |
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| US20040035910A1 (en) * | 2001-11-21 | 2004-02-26 | Dockus Kostas F. | Low temperature fluxless brazing |
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-
2019
- 2019-12-19 CN CN201911316146.6A patent/CN111037089A/en active Pending
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|---|---|---|---|---|
| US20040035910A1 (en) * | 2001-11-21 | 2004-02-26 | Dockus Kostas F. | Low temperature fluxless brazing |
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| CN106956072A (en) * | 2017-04-06 | 2017-07-18 | 爱迪森自动化科技（昆山）有限公司 | A kind of connection method of diffusion welding (DW) laminated aluminium foil |
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| 周威等: "真空扩散焊对镁合金电极性能的影响 ", 《电源技术》 * |
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Application publication date: 20200421 |