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Method for preparing Al-7Mg-5Si-3Mo alloy corrosion solution

A technology of corrosion solution and alloy, applied in the field of preparation of Al-7Mg-5Si-3Mo alloy corrosion solution, can solve the problems of incomplete structure display, not very obvious effect, difficult corrosion of the metallographic structure of the alloy, etc. The corrosion is simple and fast, the metallographic sample preparation time is shortened, and the corrosion time is short.

Inactive Publication Date: 2016-01-06
李达
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Problems solved by technology

[0002] The metallographic structure of Al-7Mg-5Si-3Mo alloy is difficult to corrode, even if it is corroded, its structure is often not completely displayed, so the metallographic phase is usually observed by anodic coating and polarized light, and there are also some common corrosion solutions Corroded it, but the effect is not very obvious

Method used

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  • Method for preparing Al-7Mg-5Si-3Mo alloy corrosion solution

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Embodiment

[0013] The preparation method of Al-7Mg-5Si-3Mo alloy corrosion solution, add 6.5ml of nitric acid, 7ml of hydrochloric acid, 15.5ml of hydrofluoric acid in 71ml of distilled water to make a corrosion solution, first add nitric acid, then add hydrochloric acid, and finally add hydrofluoric acid acid, and then stir well with a glass rod.

[0014] The corrosion solution prepared by the above steps is used to corrode the Al-7Mg-5Si-3Mo alloy, the specific effect is shown in figure 1 , it can be seen that the Al-7Mg-5Si-3Mo alloy corrosion solution of the present invention has a better effect, and the grain boundaries and grains are clearly displayed.

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Abstract

The invention discloses a method for preparing an Al-7Mg-5Si-3Mo alloy corrosion solution. The corrosion solution is prepared by adding a certain amount of nitric acid, hydrochloric acid and hydrofluoric acid into distilled water, wherein the volume fractions of nitric acid, hydrochloric acid and hydrofluoric acid are respectively 6.5 percent, 7 percent and 15.5 percent, and the rest is the distilled water. During preparation, nitric acid, hydrochloric acid and hydrofluoric acid are added successively. After Al-7Mg-5Si-3Mo alloy is corroded by the corrosion solution, the crystal boundary and the crystalline grain of the Al-7Mg-5Si-3Mo alloy are clearly showed. The corrosion effect is good, the metallographic sample preparation time is greatly shortened, and the corrosion time is short.

Description

technical field [0001] The invention relates to a method for preparing an Al-7Mg-5Si-3Mo alloy corrosion solution, belonging to the technical field of corrosion solutions. Background technique [0002] The metallographic structure of Al-7Mg-5Si-3Mo alloy is difficult to corrode, even if it is corroded, the structure is often not completely displayed, so the metallographic phase is usually observed by anodic coating and polarized light, and there are also some common corrosion solutions Corroded it, but the effect is not very obvious. Therefore, how to make the metallographic corrosion of Al-7Mg-5Si-3Mo alloy simple and fast is a difficult problem to be solved. Contents of the invention [0003] The technical problem to be solved in the present invention: provide a kind of preparation method of Al-7Mg-5Si-3Mo alloy corrosion solution, the grain boundary and grain display of the Al-7Mg-5Si-3Mo alloy after corrosion are clear, and corrosion effect is good, To overcome the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/20
Inventor 李娜
Owner 李达
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