CN100577875C - Pure aluminium sheet material corrosive agent - Google Patents
Pure aluminium sheet material corrosive agent Download PDFInfo
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- CN100577875C CN100577875C CN200810040831A CN200810040831A CN100577875C CN 100577875 C CN100577875 C CN 100577875C CN 200810040831 A CN200810040831 A CN 200810040831A CN 200810040831 A CN200810040831 A CN 200810040831A CN 100577875 C CN100577875 C CN 100577875C
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- sheet material
- aluminium sheet
- fine aluminium
- corrosive agent
- pure aluminium
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Abstract
Aiming at the disadvantages of the prior art and the market demand, the invention discloses a corrosive of pure aluminium sheets, which comprises hydrochloric acid, nitric acid, hydrofluoric acid and water which are mixed according to a certain proportion, wherein, the molarity of the hydrochloric acid is 8 to 10mol/L, the molarity of the nitric acid is 5 to 8mol/L, and the molarity of the hydrofluoric acid is 14 to 18mol/L. Compared with the similar prior art, the corrosive can clearly display the grain boundary after the pure aluminium sheets are processed through stretching strain and recrystallization annealing, and avoid the problems that the grain boundary is blurred and the critical deformation degree of the made pure aluminium sheets is calculated mistakenly or cannot be calculated caused by the corrosive.
Description
Technical field
The present invention relates to a kind of fine aluminium sheet material corrosive agent, specifically, relate to a kind of etching reagent that is used to show the grain boundary after the distortion of fine aluminium sheet material drawn, the recrystallization annealing.
Background technology
Usually,, at first need fine aluminium sheet material is carried out tensile deformation, recrystallization annealing processing, with etching reagent it is corroded then, obtain critical degree of deformation by calculating grain size at last in order to calculate the critical degree of deformation of fine aluminium sheet material.If after the corrosion of etching reagent, can't observe the grain boundary clearly, will cause the calculating of grain size very difficult or inaccurate, thereby the critical degree of deformation of material is accurately calculated in influence.Therefore, in order to calculate the critical degree of deformation of fine aluminium sheet material, need there be the fine aluminium sheet material after suitable etching reagent is handled drawn distortion, recrystallization annealing to corrode, and the corrosion of aluminium alloy agent of using at present, can generate one deck spray at sample surfaces behind the corrosion fine aluminium sheet material, can't distinguish the grain boundary at all, cause fine aluminium sheet material critical degree of deformation calculating very the difficulty.
Summary of the invention
The objective of the invention is at the existing in prior technology defective and the market requirement, the fine aluminium sheet material corrosive agent of the clear demonstration of a kind of energy grain boundary is provided, with the problem of the critical degree of deformation dyscalculia that solves fine aluminium sheet material.
For achieving the above object, the technical solution used in the present invention is as follows:
Fine aluminium sheet material corrosive agent of the present invention, mix by certain proportioning by hydrochloric acid, nitric acid, hydrofluoric acid and water, it is characterized in that: wherein the volumetric molar concentration of hydrogenchloride is 8～10mol/L, and the volumetric molar concentration of nitric acid is 5～8mol/L, and hydrofluoric volumetric molar concentration is 14～18mol/L.
Described hydrochloric acid preferred mass percentage concentration is 36%～38% hydrochloric acid soln.
Described nitric acid preferred mass percentage concentration is 65%～70% salpeter solution.
Described hydrofluoric acid preferred mass percentage concentration is 40%～47% hydrofluoric acid solution.
Compare with existing similar technology, etching reagent of the present invention can show the grain boundary after the distortion of fine aluminium sheet material drawn, the recrystallization annealing very clearly, has avoided because etching reagent causes the critical degree of deformation miscount or the imponderable problem of the fine aluminium sheet material of the smudgy generation in grain boundary.
Description of drawings
Fig. 1 be fine aluminium sheet material through after big tensile deformation, the recrystallization annealing by etching reagent corrosion treatment of the present invention after observed crystal grain photo;
Fig. 2 be fine aluminium sheet material through after little tensile deformation, the recrystallization annealing by etching reagent corrosion treatment of the present invention after observed crystal grain photo.
Embodiment
The present invention is described in further detail and completely below in conjunction with embodiment:
Embodiment 1
The water of measuring 25ml earlier adds in the plastic beaker of 200ml, add mass percent concentration then and be 70% salpeter solution 25ml, mass percent concentration and be 38% hydrochloric acid soln 25ml, mass percent concentration and be 47% hydrofluoric acid solution 25ml, mix and get final product.
Embodiment 2
The water of measuring 16ml earlier adds in the plastic beaker of 200ml, add mass percent concentration then and be 68% salpeter solution 27ml, mass percent concentration and be 36% hydrochloric acid soln 27ml, mass percent concentration and be 40% hydrofluoric acid solution 30ml, mix and get final product.
Embodiment 3
The water of measuring 20ml earlier adds in the plastic beaker of 200ml, add mass percent concentration then and be 65% salpeter solution 30ml, mass percent concentration and be 36% hydrochloric acid soln 25ml, mass percent concentration and be 40% hydrofluoric acid solution 25ml, mix and get final product.
Embodiment 4
The water of measuring 25ml earlier adds in the plastic beaker of 200ml, add mass percent concentration then and be 68% salpeter solution 25ml, mass percent concentration and be 36.5% hydrochloric acid soln 25ml, mass percent concentration and be 47% hydrofluoric acid solution 25ml, mix and get final product.
Embodiment 5
The back is handled in the test of fine aluminium sheet material drawn, recrystallization annealing to be immersed in the etching reagent of the present invention, etching time is determined by sample size, when treating evenly crystal grain to occur on the sample, water is rinsed well, dries up sample then and just can observe grain morphology and grain boundary.Fig. 1 be fine aluminium sheet material through after big tensile deformation, the recrystallization annealing by etching reagent corrosion treatment of the present invention after observed crystal grain photo, Fig. 2 be fine aluminium sheet material through after little tensile deformation, the recrystallization annealing by etching reagent corrosion treatment of the present invention after observed crystal grain photo, as seen: etching reagent of the present invention can show the grain boundary after the distortion of fine aluminium sheet material drawn, the recrystallization annealing very clearly.
Claims (4)
1. fine aluminium sheet material corrosive agent, mix by certain proportioning by hydrochloric acid, nitric acid, hydrofluoric acid and water, it is characterized in that: wherein the volumetric molar concentration of hydrogenchloride is 8～10mol/L, and the volumetric molar concentration of nitric acid is 5～8mol/L, and hydrofluoric volumetric molar concentration is 14～18mol/L.
2. fine aluminium sheet material corrosive agent according to claim 1 is characterized in that: described hydrochloric acid is that mass percent concentration is 36%～38% hydrochloric acid soln.
3. fine aluminium sheet material corrosive agent according to claim 1 is characterized in that: described nitric acid is that mass percent concentration is 65%～70% salpeter solution.
4. fine aluminium sheet material corrosive agent according to claim 1 is characterized in that: described hydrofluoric acid is that mass percent concentration is 40%～47% hydrofluoric acid solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810040831A CN100577875C (en) | 2008-07-22 | 2008-07-22 | Pure aluminium sheet material corrosive agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810040831A CN100577875C (en) | 2008-07-22 | 2008-07-22 | Pure aluminium sheet material corrosive agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101314851A CN101314851A (en) | 2008-12-03 |
| CN100577875C true CN100577875C (en) | 2010-01-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810040831A Expired - Fee Related CN100577875C (en) | 2008-07-22 | 2008-07-22 | Pure aluminium sheet material corrosive agent |
Country Status (1)
| Country | Link |
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| CN (1) | CN100577875C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880881B (en) * | 2010-06-13 | 2012-02-22 | 西南大学 | High aluminum zinc alloy etching agent and use method thereof |
| CN103129048B (en) * | 2011-12-02 | 2015-07-29 | 鸿富锦精密工业（深圳）有限公司 | The preparation method of the complex of metal and plastics and complex |
| CN103774148B (en) * | 2011-12-31 | 2016-03-16 | 聚灿光电科技股份有限公司 | Semiconductor technology normal temperature aluminium etch process |
| CN103983499B (en) * | 2014-05-12 | 2016-08-24 | 太原科技大学 | A kind of observational technique to zirconium-base amorphous alloy internal shear band |
| CN108240933B (en) * | 2017-12-11 | 2021-10-22 | 囯网河北省电力有限公司电力科学研究院 | Ultra-pure aluminum microstructure morphology etching agent and etching method |
| GB201919481D0 (en) * | 2019-12-31 | 2020-02-12 | Element Six Uk Ltd | Method of processing polycrystalline diamond material |
| CN112553628A (en) * | 2020-11-30 | 2021-03-26 | 晟通科技集团有限公司 | Aluminum alloy etching agent and aluminum alloy etching method |
| CN112611622A (en) * | 2020-12-10 | 2021-04-06 | 宁波锦越新材料有限公司 | Corrosive agent for detecting microstructure of high-purity aluminum continuous casting billet and detection method |
| CN115873600B (en) * | 2022-11-28 | 2024-05-07 | 武汉高芯科技有限公司 | Punching corrosive liquid and punching method for cadmium telluride/zinc sulfide double-layer passivation film |
-
2008
- 2008-07-22 CN CN200810040831A patent/CN100577875C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
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| 金相试样的染色腐蚀. 孟秀玉，张淑芳.国外金属热处理，第7卷第2期. 1986 |
| 金相试样的染色腐蚀. 孟秀玉，张淑芳.国外金属热处理，第7卷第2期. 1986 * |
| 铝及铝合金的腐蚀与化学砂面. 姜力强.电镀与精饰，第1986年第6期. 1986 |
| 铝及铝合金的腐蚀与化学砂面. 姜力强.电镀与精饰，第1986年第6期. 1986 * |
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| Publication number | Publication date |
|---|---|
| CN101314851A (en) | 2008-12-03 |
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