CN105220150A - The preparation method of Al-7Mg-5Si-3Mo alloy corrosion solution - Google Patents
The preparation method of Al-7Mg-5Si-3Mo alloy corrosion solution Download PDFInfo
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- CN105220150A CN105220150A CN201410303337.XA CN201410303337A CN105220150A CN 105220150 A CN105220150 A CN 105220150A CN 201410303337 A CN201410303337 A CN 201410303337A CN 105220150 A CN105220150 A CN 105220150A
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Abstract
The invention discloses a kind of preparation method of Al-7Mg-5Si-3Mo alloy corrosion 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 6.5%, 7%, 15.5% with volume fraction, surplus is distilled water, first nitric acid is added during preparation, add hydrochloric acid again, finally add hydrofluoric acid.After etchant solution corrosion of the present invention, it is clear that the crystal boundary of Al-7Mg-5Si-3Mo alloy and crystal grain show, and corrosive effect is better, shorten the metallographic sample preparation time greatly, and etching time is shorter.
Description
Technical field
The present invention relates to a kind of preparation method of Al-7Mg-5Si-3Mo alloy corrosion solution, belong to etchant solution technical field.
Background technology
The metallographic structure of Al-7Mg-5Si-3Mo 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 the etching pit of Al-7Mg-5Si-3Mo alloy becomes simple and fast is the difficult problem waiting to solve.
Summary of the invention
The technical problem to be solved in the present invention: the preparation method providing a kind of Al-7Mg-5Si-3Mo alloy corrosion solution, it is clear that the crystal boundary of the Al-7Mg-5Si-3Mo alloy after corrosion and crystal grain show, and corrosive effect is good, to overcome the deficiencies in the prior art.
Technical scheme of the present invention:
The preparation method of Al-7Mg-5Si-3Mo alloy corrosion 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 6.5%, 7%, 15.5% 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 Al-7Mg-5Si-3Mo 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 Al-7Mg-5Si-3Mo alloy become simple and quick, and saves cost.
accompanying drawing illustrates:
Fig. 1 is the corrosive effect figure of 100 times.
embodiment:
Embodiment:
The preparation method of Al-7Mg-5Si-3Mo alloy corrosion solution, in 71ml distilled water, add 6.5ml nitric acid, 7ml hydrochloric acid, 15.5ml hydrofluoric acid makes etchant solution, first add nitric acid during preparation, then add hydrochloric acid, finally add hydrofluoric acid, then stir with glass stick.
Be used for by the etchant solution made through above-mentioned steps corroding Al-7Mg-5Si-3Mo alloy, concrete effect is shown in Fig. 1, and the effect of known Al-7Mg-5Si-3Mo alloy corrosion solution of the present invention is better, and it is clear that crystal boundary and crystal grain show.
Claims (2)
1.Al-7Mg-5Si-3Mo the preparation method of alloy corrosion 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 6.5%, 7%, 15.5% with volume fraction, surplus is distilled water, first nitric acid is added during preparation, add hydrochloric acid again, finally add hydrofluoric acid.
2. the preparation method of Al-7Mg-5Si-3Mo alloy corrosion 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 |
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| CN201410303337.XA CN105220150A (en) | 2014-06-30 | 2014-06-30 | The preparation method of Al-7Mg-5Si-3Mo alloy corrosion solution |
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| CN201410303337.XA CN105220150A (en) | 2014-06-30 | 2014-06-30 | The preparation method of Al-7Mg-5Si-3Mo alloy corrosion solution |
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| CN105220150A true CN105220150A (en) | 2016-01-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983338A (en) * | 2019-12-25 | 2020-04-10 | 爱发科电子材料（苏州）有限公司 | Metallographic corrosive agent and corrosion method for molybdenum or molybdenum alloy and display method of metallographic structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983338A (en) * | 2019-12-25 | 2020-04-10 | 爱发科电子材料（苏州）有限公司 | Metallographic corrosive agent and corrosion method for molybdenum or molybdenum alloy and display method of metallographic structure |
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Application publication date: 20160106 |