CN112845590A - Metal foil and preparation method thereof - Google Patents
Metal foil and preparation method thereof Download PDFInfo
- Publication number
- CN112845590A CN112845590A CN202110259749.8A CN202110259749A CN112845590A CN 112845590 A CN112845590 A CN 112845590A CN 202110259749 A CN202110259749 A CN 202110259749A CN 112845590 A CN112845590 A CN 112845590A
- Authority
- CN
- China
- Prior art keywords
- metal plate
- metal
- niobium
- plate
- foil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 87
- 239000002184 metal Substances 0.000 title claims abstract description 87
- 239000011888 foil Substances 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 24
- 238000011282 treatment Methods 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims abstract description 7
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 62
- 229910052758 niobium Inorganic materials 0.000 claims description 35
- 239000010955 niobium Substances 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 18
- 229910052715 tantalum Inorganic materials 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 9
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 125000005842 heteroatom Chemical group 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052735 hafnium Inorganic materials 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 238000002791 soaking Methods 0.000 abstract description 3
- 239000012466 permeate Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 16
- 238000005242 forging Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002821 niobium Chemical class 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010273 cold forging Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- B21B1/40—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 foils which present special problems, e.g. because of thinness
-
- 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
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- 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
- B21B47/04—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal for separating layers after rolling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/02—Alloys based on vanadium, niobium, or tantalum
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
Abstract
The invention relates to a metal foil and a preparation method thereof. The preparation method of the metal foil comprises the following steps: providing a first metal plate, a second metal plate and a third metal plate; stacking a first metal plate, a second metal plate and a third metal plate in alignment at their edges to obtain a stacked plate, wherein the second metal plate is located between the first metal plate and the third metal plate; welding partial edges of the laminated plate to enable the edges of the first metal plate, the second metal plate and the third metal plate to be welded and connected with each other; wherein, the length of the welded edge accounts for 90 to 98 percent of the total circumference of the edge; soaking the welded laminated plate in oil to enable white oil to permeate between two adjacent layers of metal plates through the unwelded area; carrying out one or more times of rolling treatment on the laminated plate after the soaking treatment; and disassembling and layering the laminated plate after rolling treatment.
Description
Technical Field
The invention relates to the field of materials, in particular to a metal foil and a preparation method thereof.
Background
Niobium has a low capture cross-section for thermal neutrons and is therefore used in the nuclear industry for neutron detection.
Tantalum in niobium is difficult to separate, the characteristic X-ray energy spectrums of niobium and tantalum activation products are very close, experimental measurement is difficult to distinguish, and if the content of tantalum is too large, measurement of the niobium activation products can be interfered, and measurement accuracy is affected.
The prior art requires niobium foil of high purity and low thickness.
Disclosure of Invention
The inventor provides an innovative preparation method of the metal foil through a great deal of research.
By adopting the method disclosed by the invention, the preparation of the high-purity niobium foil can be realized, and the problem of 'neck sticking' of the high-purity niobium foil is solved.
The niobium foil prepared by the method can be used for improving the accurate irradiation supervision of the reactor pressure vessel and further improving the accuracy of the activity measurement of the dose detection element.
The niobium foil prepared by the method disclosed by the invention has the purity of 99.99% or higher, wherein the content of tantalum element can reach below 5mg/kg, and the thickness can reach 0.007-0.02 mm.
In some aspects, the present disclosure provides a method of making a metal foil, comprising the steps of:
-providing a first metal plate, a second metal plate and a third metal plate;
-stacking a first metal plate, a second metal plate and a third metal plate in edge alignment, obtaining a stacked plate, wherein the second metal plate is located between the first metal plate and the third metal plate;
-welding part of the edges of the laminate, the edges of the first, second and third metal plates being welded to each other; wherein the length of the welded edge accounts for 90-98% (e.g., 95-98%) of the total perimeter of the edge;
-immersing the welded laminate in an oil to allow the white oil to penetrate between two adjacent metal sheets through the non-welded areas;
-subjecting the soaked laminate to one or more rolling treatments;
-dismantling and delaminating the rolled laminate.
In some embodiments, the first metal plate, the second metal plate, and the third metal plate have the same face size and face shape. The face size and face shape refer to the size and shape of the face perpendicular to the thickness. This is advantageous for obtaining a uniform thickness and a good plate shape.
In some embodiments, the first metal plate and the third metal plate have the same thickness. This is advantageous for obtaining a uniform thickness and a good plate shape.
In some embodiments, the ratio of the thickness of the first metal plate, the second metal plate, and the third metal plate is 5 to 15 (e.g., 8 to 10): 1: 5 to 15 (e.g., 8 to 10).
In some embodiments, the second metal plate has a thickness of 0.1 to 1mm, such as 0.1 to 0.5mm, such as 0.1 to 0.2 mm.
In some embodiments, the total deformation of the laminated sheet after the rolling process is 85-95% (e.g., 90%).
In some embodiments, the thickness of the second metal plate in the laminate after the rolling process is in the range of 0.005 to 0.02mm, for example 0.01 to 0.015 mm.
In some embodiments, the first metal plate, the second metal plate, and the third metal plate have the same material.
In some embodiments, the material of the first metal plate, the second metal plate, and the third metal plate is niobium metal.
In some embodiments, the niobium metal has a niobium purity of 99.99 wt.% or more, preferably 99.999 wt.% or more.
In some embodiments, the niobium metal comprises 0.005ppm or less of each of the first group hetero elements selected from one or more of the following: fe. Ni, Zr, Al, Hf, Cr and Ti.
In some embodiments, the niobium metal comprises less than or equal to 10ppm of each of a second type of hetero element selected from one or more of the following: C. o, N, H, Ta, W, Mo, Si.
In some embodiments, the tantalum metal is present in the niobium metal in an amount of less than 5 ppm.
In some embodiments, the white oil has a kinematic viscosity at 40 ℃ of 9 to 11 mm/s.
In some aspects, the present disclosure provides a metal foil obtained by the method of any one of the above.
In some embodiments, the metal foil is a niobium foil for neutron detection.
In some embodiments, the niobium foil has a purity of 99.99% or more and the tantalum element content of the niobium foil is 5mg/kg or less.
In some embodiments, the niobium foil has a thickness of 0.007 to 0.02 mm.
Interpretation of terms
The white oil meets the standard of Industrial white oil NB/SH/T0006-
The No. 10 white oil is white oil with kinematic viscosity (40 ℃) of 9-11 mm/s.
The deformation ratio of the rolling treatment was calculated according to the following formula (D)1-D0)/D0Wherein D is0Thickness of the plate before rolling, D1Is the thickness of the rolled plate.
Advantageous effects
The disclosed methods or products have one or more of the following advantages:
(1) the thickness of the metal foil is low, for example, 0.02mm or less;
(2) the content of impurity elements in the metal foil is low, for example, the content of tantalum elements in the niobium foil is less than 5 ppm;
(3) the welding length of the edge of the laminated body is more than 90% of the full circumference, so that equal-volume deformation of each layer of the material in the rolling process is facilitated, the thickness of the middle material is also facilitated to be accurately calculated, and a good plate shape is also facilitated to be obtained;
(4) white oil is adopted for lubrication among the layers of the laminated body, the white oil can play a certain cooling role besides the lubricating and isolating role, and the finished product can be completely removed by acid water rinsing or industrial alcohol wiping after being separated. The use of a white oil of a particular kinematic viscosity (e.g., number 10 white oil) facilitates the penetration of the material into the white oil through the process holes and between the layers of the laminate after the weld is completed.
Drawings
FIG. 1 is a schematic view of a welded laminate of some embodiments
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
Example 1
1) Ingot casting: smelting for 4 times by adopting a 1200KW electron beam furnace
And (3) casting a high-purity niobium ingot. The content of niobium element in the ingot is more than 99.999 wt%, and the content of the impurity elements is as follows (ppm):
| element(s) | C | O | N | H | Ta | W | Mo | Si |
| Measured value | 5 | 7 | 8 | 1 | 4.52 | 1.07 | 0.97 | 0.088 |
| Element(s) | Fe | Ni | Zr | Al | Hf | Cr | Ti | |
| Measured value | <0.005 | <0.005 | 0.019 | <0.005 | <0.005 | <0.005 | <0.005 |
2) Forging:
forging by cold forging at the temperature of less than or equal to 80 ℃ to obtain a forged blank, wherein the specification of the forged blank is as follows: 50 (thickness) × 200 (width) × L (length) mm;
3) machining:
turning two end surfaces of the forging stock, wherein the turning depth of each side surface is 1.5mm, and milling 4 sides to remove defects such as forging and folding;
4) vacuum stress relief heat treatment:
carrying out heat treatment on the machined forging stock, wherein the heat treatment temperature is 650 ℃, and the heat treatment time is 90 min;
5) cogging and rolling:
the cogging rolling of the forging stock after the heat treatment comprises the following steps:
widening and rolling until the width B is 300 +/-5 mm; then, the user can use the device to perform the operation,
reversing rolling to a thickness delta (thickness) of 3.0 +/-0.15 mm, and controlling the temperature to be less than or equal to 80 ℃;
6) acid washing:
and (4) carrying out acid washing on the product in the last step by using a mixed acid solution to remove surface impurities.
The formulation of the mixed acid solution was as follows: aqueous HF solution (concentration > 40%): HNO3Aqueous solution (concentration 65% -68%): aqueous HCl (concentration 36% -38%): 2: 3 (volume ratio);
7) vacuum stress relief heat treatment:
carrying out heat treatment on the product obtained in the last step, wherein the heat treatment temperature is 650 ℃, and the heat treatment time is 90 min;
8) rolling (medium rolling):
first rolling to delta1(thickness) ═ 1.5 ± 0.05 mm;
second rolling to delta2(thickness) 0.18 +/-0.01 mm, and temperature control is less than or equal to 80 ℃;
9) vacuum stress relief heat treatment:
carrying out heat treatment on the product in the last step, wherein the heat treatment temperature is 680 ℃, and the heat treatment time is 90 min;
10) blanking:
cutting and blanking the product of the last step, comprising:
first niobium sheet: 1.5 plus or minus 0.05mm multiplied by 140mm multiplied by 400 mm;
second niobium sheet: 0.18 plus or minus 0.01mm multiplied by 140mm multiplied by 400 mm;
a third niobium sheet: 1.5 plus or minus 0.05mm multiplied by 140mm multiplied by 400 mm;
11) welding:
a second niobium plate of 0.18mm in thickness was placed between the first niobium plate and the third niobium plate of 1.5mm in thickness with the four sides aligned, and the four sides of the laminate plate were welded by vacuum argon arc welding to weld the edges of the first niobium plate, the second niobium plate, and the third niobium plate to each other. Two ends of the laminated plate along the length direction are respectively reserved with a 10mm wide fabrication hole without welding for subsequent white oil infiltration.
Figure 1 shows a schematic view of a welded laminate. As shown in fig. 1, one laminated plate 10 includes a first niobium plate 11, a second niobium plate 12, and a third niobium plate 13, and the second niobium plate 12 is laminated between the first niobium plate 11 and the third niobium plate 13. The laminate 10 is surrounded by a welded region 16 and a non-welded region 15. A non-welded region 15 is provided along each of the longitudinal edges of the laminate 10, and the remaining edges are welded regions 16. The entire circumference of the laminated plate 10 was 1080mm, the length of the welded region was 1060mm, and two non-welded regions were provided at both ends in the longitudinal direction, each having a length of 10 mm. The proportion of the welded area to the entire circumference is about 98%.
12) Oil immersion treatment:
and (3) soaking the product obtained in the last step in No. 10 white oil (type I) for 8-10 hours to obtain a laminated niobium plate strip.
13) Rolling a finished product;
rolling the laminated niobium plate strip by using a plate strip rolling mill, and rolling the niobium plate strip to a thickness range of 0.17-0.25mm according to the processing rate of 92-95% and the calculation of an isometric deformation theory, wherein the rolling temperature is controlled to be less than or equal to 80 ℃.
14) Dividing and shearing: shearing the rolled foil, wherein the width of the rolled foil B is 120 +/-0.1 mm; collecting the middle layer after shearing, namely obtaining high-purity niobium foil with the thickness less than or equal to 0.02 mm;
15) oil removal: cleaning the residual white oil on the surface of the niobium foil by using alcohol;
16) vacuum stress relief heat treatment:
the heat treatment temperature after cleaning is 650 ℃; the heat treatment time is 90 min.
Analyzing and detecting:
(1) size and thickness detection
The thickness measurements were performed every 50mm along the edge of the high purity niobium foil with a length of 4 m. Through detection, the thickness range of the niobium foil is as follows: 0.014-0.019mm, which is equivalent to that the thickness change of the niobium foil per meter of length is not more than 1.25 multiplied by 10-6And m is selected. This test result shows that the high purity niobium foil prepared by the method of the present disclosure has a very thin thickness along the length direction and is very uniform.
Cutting the high-purity niobium foil into a finished niobium foil product, wherein the size of the finished niobium foil product is as follows: the length (5-7) mm is multiplied by the width (0.8-0.9) mm.
(2) Residual resistivity detection
For residual resistivity testing, a batch of niobium sheet strip of specified thickness was specifically rolled in step (13) above, such niobium sheet strip was slit to collect an intermediate layer of 3mm thickness, from which 100mm by 3mm strips were cut for residual resistivity testing. The average RRR value (residual resistance ratio) of this sample strip was 547. From this test result, it can be seen that the niobium foil prepared by the method of the present disclosure has a higher purity.
U(300K)、U(9.3K)The voltage values of the metal at the temperature of 300K and 9.3K are respectively the same current.
From the above analysis and detection, the method of the present invention can obtain a niobium foil with high purity and low thickness. The niobium foil can be used for neutron detection.
While specific embodiments of the invention have been described in detail, those skilled in the art will understand that: various modifications may be made in the details within the teachings of the disclosure, and these variations are within the scope of the invention. The full scope of the invention is given by the appended claims and any equivalents thereof.
Claims (10)
1. A method of making a metal foil comprising the steps of:
-providing a first metal plate, a second metal plate and a third metal plate;
-stacking a first metal plate, a second metal plate and a third metal plate in edge alignment, obtaining a stacked plate, wherein the second metal plate is located between the first metal plate and the third metal plate;
-welding part of the edges of the laminate, the edges of the first, second and third metal plates being welded to each other; wherein, the length of the welded edge accounts for 90 to 98 percent of the total circumference of the edge;
-immersing the welded laminate in an oil to allow the white oil to penetrate between two adjacent metal sheets through the non-welded areas;
-subjecting the soaked laminate to one or more rolling treatments;
-dismantling and delaminating the rolled laminate.
2. The method according to claim 1, wherein a ratio of thicknesses of the first metal plate, the second metal plate and the third metal plate is 5 to 15: 1: 5 to 15.
3. A method according to claim 2, wherein the second metal plate has a thickness of 0.1 to 1mm, such as 0.1 to 0.2 mm.
4. The method of claim 1, wherein the total deformation of the laminated sheet after the rolling process is 85 to 95%.
5. The method as claimed in claim 1, wherein the thickness of the second metal plate in the laminated plate after the rolling treatment is 0.005 to 0.02 mm.
6. The method of claim 1, wherein the first metal plate, the second metal plate, and the third metal plate are of the same material.
7. The method of claim 4, wherein the first metal plate, the second metal plate, and the third metal plate are niobium metal.
8. The method of claim 7, having one or more of the following features:
-the niobium metal has a niobium purity of 99.99 wt.% or more, preferably 99.999 wt.% or more;
-the niobium metal has a content of 0.005ppm or less of each of a first type of hetero element selected from one or more of the following: fe. Ni, Zr, Al, Hf, Cr and Ti.
-the niobium metal has a content of 10ppm or less of each of a second type of hetero element selected from one or more of: C. o, N, H, Ta, W, Mo, Si;
-the content of tantalum element in the niobium metal is 5ppm or less.
9. The method according to claim 1, wherein the white oil has a kinematic viscosity at 40 ℃ of 9 to 11 mm/s.
10. A metal foil obtained by the method according to any one of claims 1 to 9;
preferably, the metal foil is a niobium foil for neutron detection;
more preferably, the niobium foil has a purity of 99.99% or more, and the niobium foil has a tantalum element content of 5mg/kg or less;
more preferably, the niobium foil has a thickness of 0.007 to 0.02 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110259749.8A CN112845590A (en) | 2021-03-10 | 2021-03-10 | Metal foil and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110259749.8A CN112845590A (en) | 2021-03-10 | 2021-03-10 | Metal foil and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112845590A true CN112845590A (en) | 2021-05-28 |
Family
ID=75993837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110259749.8A Pending CN112845590A (en) | 2021-03-10 | 2021-03-10 | Metal foil and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112845590A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115466841A (en) * | 2022-04-13 | 2022-12-13 | 宁夏东方钽业股份有限公司 | Preparation method of high-purity niobium sheet for irradiation supervision neutron detection |
-
2021
- 2021-03-10 CN CN202110259749.8A patent/CN112845590A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115466841A (en) * | 2022-04-13 | 2022-12-13 | 宁夏东方钽业股份有限公司 | Preparation method of high-purity niobium sheet for irradiation supervision neutron detection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR950012810B1 (en) | Platinum-cobalt alloy sputtering target and method for manufacturing same | |
| KR100528090B1 (en) | Metal article with fine uniform structures and textures and process of making same | |
| EP0459909A1 (en) | Process for manufacturing corrosion-resistant seamless titanium alloy tubes and pipes | |
| CN112845590A (en) | Metal foil and preparation method thereof | |
| EP3004408B1 (en) | Method for producing a metal film | |
| US20060243358A1 (en) | Zirconium alloys with improved corrosion resistance and method for fabricating zirconium alloys with improved corrosion | |
| CN107475653B (en) | A kind of preparation method of 3C Product TC4 titanium alloy plate | |
| EP2692452A1 (en) | Stainless steel sheet and method for manufacturing same | |
| WO2002014566A1 (en) | Nickel-based alloy product and process for producing the same | |
| EP2123785A1 (en) | Steel plate having high gathering degree of {222} plane and process for production thereof | |
| EP2027947A1 (en) | Method for the production of alloy pipes for heat exchangers using precipitation hardening through underwater extrusion | |
| CN108713067A (en) | Martensitic stainless steel foil and its manufacturing method | |
| CN106391747B (en) | The method that nuclear fuel High-purity Niobium silk is prepared using general industry with niobium bar as raw material | |
| EP1878808A1 (en) | Ti ALLOY, Ti ALLOY MEMBER AND METHOD FOR PRODUCING SAME | |
| JP5609784B2 (en) | Titanium alloy thick plate for electrolytic Cu foil production drum and its production method | |
| EP0523914B1 (en) | Method of fabricating a channel box or other part for a nuclear reactor | |
| JP5114672B2 (en) | Laminated steel sheet and manufacturing method thereof | |
| EP3575422B1 (en) | Titanium alloy material | |
| JP4613791B2 (en) | Stainless steel material containing B and method for producing the same | |
| EP3594372A1 (en) | Material for cold-rolled stainless steel sheet, and production method therefor | |
| JPS6353257B2 (en) | ||
| JPS6026648A (en) | Manufacture of shape memory ni-ti alloy plate | |
| CN114082802B (en) | Overlap welding and forging deformation composite forming method | |
| EP3783119A1 (en) | Flat steel product with excellent oxidation and hot gas corrosion resistance and method for producing such a flat steel product | |
| CN114289513A (en) | Manufacturing method of S32760 super duplex stainless steel seamless tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |