Novel Mn-4%Al-La-Sc alloy etchant solution

A technology for corrosion solution and alloy, which is applied in the field of new Mn-4%Al-La-Sc alloy corrosion solution, can solve the problems of increasing production cost and time consumption, and achieve cost saving, shortening time for metallographic sample preparation, metallographic Erosion simple and fast effect

Inactive Publication Date: 2015-12-30
周雪
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But this observation method is not only time-co

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  • Novel Mn-4%Al-La-Sc alloy etchant solution

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[0016] Examples:

[0017] A new type of Mn-4%Al-La-Sc alloy corrosion solution is prepared by using mixed acid as raw material and using conventional solution preparation methods. A certain amount of distilled water is added with 7.5% phosphoric acid and 4.5% by weight. Hydrochloric acid and 9% hydrofluoric acid, then stir evenly with a glass rod. The corrosion solution made by the above steps is used to corrode Mn-4%Al-La-Sc alloy, the specific effect is shown in figure 1 .

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Abstract

The invention discloses a novel Mn-4%Al-La-Sc alloy etchant solution. A preparation method of the etchant solution comprises the step of adding a certain amount of potassium hydroxide, hydrochloric acid and phosphoric acid to distilled water, wherein the compositions comprise, by mass, 9% of hydrofluoric acid, 4.5% of hydrochloric acid, 7.5% of phosphoric acid and the balance distilled water, and the adding sequence is that phosphoric acid is added in the first place, then hydrochloric acid is added, and finally hydrofluoric acid is added, and obtaining the etchant solution. By means of the etchant solution, metallographical corrosion of Mn-4%Al-La-Sc alloy can be made be as simple, fast and convenient as that of aluminum alloy, cost is saved, and the etchant solution is particularly applied to corrosion of the Mn-4%Al-La-Sc alloy.

Description

technical field [0001] The invention relates to a novel Mn-4%Al-La-Sc alloy corrosion solution, belonging to the technical field of corrosion solutions. Background technique [0002] The metallographic structure of Mn-4%Al-La-Sc 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. But this observation method is not only time-consuming, but also increases the production cost. Therefore, how to make the metallographic corrosion of Mn-4%Al-La-Sc alloy as simple and fast as that of aluminum alloy 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 novel Mn-4%Al-La-Sc alloy corrosion solution, the metallographic structure of the Mn-4%Al-La-Sc alloy can be directly observed without anode coating Film processing and polarized light observation to...

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Application Information

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IPC IPC(8): C23F1/30G01N1/32
Inventor 周雪
Owner 周雪
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