7A05 aluminum alloy corrosion solution
A technology for corrosion solution and aluminum alloy, which is applied in the field of 7A05 aluminum alloy corrosion solution, can solve problems such as incompleteness, difficult corrosion of the metallographic structure of aluminum alloy, and inconspicuous effect, etc., to achieve short corrosion time, save cost, shorten metal The effect of sample preparation time
Inactive Publication Date: 2015-12-30
何小红
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[0002] The metallographic structure of 7A05 aluminum alloy is difficult to corrode, and even if it is corroded, its structure is often displayed incompletely, so the metallographic phase is usually observed by anodic coating and polarized light, and some common corrosive solutions are also used to corrode it. But the effect is not very obvious
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[0013] For 7A05 aluminum alloy corrosion solution, add 3.5ml nitric acid, 2.5ml hydrochloric acid, and 10.5ml hydrofluoric acid to 83.5ml distilled water to make a corrosion solution. When preparing, add nitric acid first, then hydrochloric acid, and finally hydrofluoric acid. Just mix well.
[0014] The corrosion solution prepared by the above steps is used to corrode 7A05 aluminum alloy, the specific effect is shown in figure 1 , it can be seen that the 7A05 aluminum alloy corrosion solution of the present invention has a better effect, and the grain boundaries and grains are clearly displayed.
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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 [0001] The invention relates to a 7A05 aluminum alloy corrosion solution and belongs to the technical field of corrosion solutions. Background technique [0002] The metallographic structure of 7A05 aluminum alloy is difficult to corrode, and even if it is corroded, its structure is often displayed incompletely, so the metallographic phase is usually observed by anodic coating and polarized light, and some common corrosive solutions are also used to corrode it. But the effect is not very obvious. Therefore, how to make the metallographic corrosion of 7A05 aluminum alloy simple and fast is a difficult problem to be solved. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a 7A05 aluminum alloy corrosion solution, the grain boundaries and grains of the corroded 7A05 aluminum alloy are clearly displayed, and the corrosion effect is good. [0004] Technical scheme of the present invention: [0005] F...
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IPC IPC(8): C23F1/20G01N1/32
Inventor 何小红
Owner 何小红