CN105200427A - 7A05 aluminum alloy corrosion solution - Google Patents
7A05 aluminum alloy corrosion solution Download PDFInfo
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- CN105200427A CN105200427A CN201410303247.0A CN201410303247A CN105200427A CN 105200427 A CN105200427 A CN 105200427A CN 201410303247 A CN201410303247 A CN 201410303247A CN 105200427 A CN105200427 A CN 105200427A
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- aluminum alloy
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Abstract
The invention discloses a 7A05 aluminum alloy corrosion solution. The 7A05 aluminum alloy corrosion solution is prepared by adding certain amounts of nitric acid, hydrochloric acid and hydrofluoric acid into distilled water, and comprises the following ingredients by volume: 3.5% of nitric acid, 2.5% of hydrochloric acid, 10.5% of hydrofluoric acid and the balance of distilled water. During preparation of the 7A05 aluminum alloy corrosion solution, nitric acid, hydrochloric acid and hydrofluoric acid are added in sequence. After the 7A05 aluminum alloy corrosion solution is utilized for corroding a 7A05 aluminum alloy, grain boundaries and grains of the corroded 7A05 aluminum alloy are clearly displayed; the corrosion effect is relatively good, the metallographic specimen preparation period is greatly shortened, and the corrosion period is relatively short.
Description
Technical field
The present invention relates to 7A05 corrosion of aluminium alloy solution, belong to etchant solution technical field.
Background technology
The metallographic structure of 7A05 aluminium alloy is difficult to corrosion, even if out it organizes also often show incomplete in corrosion, thus usually all adopt anode overlay film to add polarisation to observe its metallographic, also have some common etchant solutions to corrode it, but effect is not clearly simultaneously.Therefore how making the etching pit of 7A05 aluminium alloy become simple and fast is the difficult problem waiting to solve.
Summary of the invention
The technical problem to be solved in the present invention: provide 7A05 corrosion of aluminium alloy solution, it is clear that the crystal boundary of the 7A05 aluminium alloy after corrosion and crystal grain show, and corrosive effect is good.
Technical scheme of the present invention:
7A05 corrosion of aluminium alloy solution, in distilled water, add a certain amount of nitric acid, hydrochloric acid, hydrofluoric acid makes etchant solution, wherein nitric acid, hydrochloric acid, hydrofluoric acid are respectively 3.5%, 2.5%, 10.5% with volume fraction, surplus is distilled water, first nitric acid is added during preparation, add hydrochloric acid again, finally add hydrofluoric acid.
Described etchant solution adopts conventional solution preparation method to prepare.
Beneficial effect of the present invention:
Compared with prior art, after etchant solution corrosion of the present invention, it is clear that the crystal boundary of 7A05 aluminium alloy and crystal grain show, and corrosive effect is better, shorten the metallographic sample preparation time greatly, and etching time is shorter.Etchant solution of the present invention can make the etching pit of 7A05 aluminium alloy become simple and quick, and saves cost.
accompanying drawing illustrates:
Fig. 1 is the corrosive effect figure of 100 times.。
embodiment:
Embodiment:
7A05 corrosion of aluminium alloy solution, adds 3.5ml nitric acid, 2.5ml hydrochloric acid, 10.5ml hydrofluoric acid makes etchant solution, first add nitric acid, then add hydrochloric acid, finally add hydrofluoric acid, then stir with glass stick during preparation in 83.5ml distilled water.
Be used for by the etchant solution made through above-mentioned steps corroding 7A05 aluminium alloy, concrete effect is shown in Fig. 1, and the effect of known 7A05 corrosion of aluminium alloy solution of the present invention is better, and it is clear that crystal boundary and crystal grain show.
Claims (2)
1.7A05 corrosion of aluminium alloy solution, it is characterized in that: in distilled water, add a certain amount of nitric acid, hydrochloric acid, hydrofluoric acid makes etchant solution, wherein nitric acid, hydrochloric acid, hydrofluoric acid are respectively 3.5%, 2.5%, 10.5% with volume fraction, surplus is distilled water, first nitric acid is added during preparation, add hydrochloric acid again, finally add hydrofluoric acid.
2. 7A05 corrosion of aluminium alloy solution according to claim 1, is characterized in that: described etchant solution adopts conventional solution preparation method to prepare.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410303247.0A CN105200427A (en) | 2014-06-30 | 2014-06-30 | 7A05 aluminum alloy corrosion solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410303247.0A CN105200427A (en) | 2014-06-30 | 2014-06-30 | 7A05 aluminum alloy corrosion solution |
Publications (1)
| Publication Number | Publication Date |
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| CN105200427A true CN105200427A (en) | 2015-12-30 |
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| CN201410303247.0A Pending CN105200427A (en) | 2014-06-30 | 2014-06-30 | 7A05 aluminum alloy corrosion solution |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862041A (en) * | 2016-04-20 | 2016-08-17 | 西安热工研究院有限公司 | Erodent for displaying aluminum casting alloy tissue, preparation method and application method |
| CN106498399A (en) * | 2016-11-22 | 2017-03-15 | 河南平芝高压开关有限公司 | A kind of fine aluminium grain size caustic and preparation method thereof, corrodes process for show |
| CN107805815A (en) * | 2017-09-30 | 2018-03-16 | 中车青岛四方机车车辆股份有限公司 | A kind of metallographic etching agent and its application 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 |
| CN114686886A (en) * | 2022-03-08 | 2022-07-01 | 西安昆仑工业（集团）有限责任公司 | Metallographic corrosive agent for ZL205A cast aluminum alloy and metallographic structure display method |
-
2014
- 2014-06-30 CN CN201410303247.0A patent/CN105200427A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862041A (en) * | 2016-04-20 | 2016-08-17 | 西安热工研究院有限公司 | Erodent for displaying aluminum casting alloy tissue, preparation method and application method |
| CN106498399A (en) * | 2016-11-22 | 2017-03-15 | 河南平芝高压开关有限公司 | A kind of fine aluminium grain size caustic and preparation method thereof, corrodes process for show |
| CN106498399B (en) * | 2016-11-22 | 2018-06-22 | 河南平芝高压开关有限公司 | A kind of fine aluminium grain size corrosive agent and preparation method thereof corrodes process for show |
| CN107805815A (en) * | 2017-09-30 | 2018-03-16 | 中车青岛四方机车车辆股份有限公司 | A kind of metallographic etching agent and its application method |
| CN107805815B (en) * | 2017-09-30 | 2020-03-20 | 中车青岛四方机车车辆股份有限公司 | Metallographic corrosive agent and application method thereof |
| 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 |
| CN114686886A (en) * | 2022-03-08 | 2022-07-01 | 西安昆仑工业（集团）有限责任公司 | Metallographic corrosive agent for ZL205A cast aluminum alloy and metallographic structure display method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151230 |
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| WD01 | Invention patent application deemed withdrawn after publication |