Aluminum alloy EBSD sample alkaline electrolysis polishing liquid and preparation method and electrolysis polishing method thereof

[0028] In this embodiment, the composition of the alkaline electrolytic polishing solution is as follows: the content of sodium ethylate is 40 g / L, the content of sodium silicate is 15 g / L, the content of sodium metaaluminate is 10 g / L, and the content of glucose is 8 g / L .

[0029] The ZL205A alloy EBSD sample is electrolytically polished using the above-mentioned alkaline electrolytic polishing solution, and the steps of the electrolytic polishing method are as follows:

[0030] (1) Mechanical grinding and polishing: the ZL205A alloy material is made into semi-finished aluminum alloy samples by wire cutting, and the semi-finished aluminum alloy samples are sequentially used on the polishing machine with 800#, 1000#, 1500# and 2000# polishing sheets. Grinding, and then polishing with 0.1μm polishing paste;

[0031] (2) Degreasing treatment: the polished ZL205A alloy material obtained in (1) is degreased with a degreasing agent, and vibrated in an ultrasonic wave until t

[0035] In this embodiment, the composition of the alkaline electrolytic polishing solution is as follows: the content of sodium ethylate is 70g / L, the content of sodium silicate is 20g / L, the content of sodium metaaluminate is 15g / L, and the content of glucose is 10g / L , to obtain an electrolytic polishing solution after mixing evenly.

[0036] The ZL205A alloy EBSD sample was electrolytically polished using the above-mentioned alkaline electrolytic polishing solution, and the polishing process was the same as that in Example 1, but the polishing time was 140 s during electrolytic polishing.

[0037] After electropolishing, the surface of ZL205A alloy has high brightness and smooth surface. After EBSD analysis, the calibration rate is high. figure 2 It is the pattern diagram of EBSD image of ZL205A alloy after electrolytic polishing.

[0039] In this embodiment, the composition of the alkaline electrolytic polishing solution is as follows: the content of sodium ethylate is 100g / L, the content of sodium silicate is 25g / L, the content of sodium metaaluminate is 20g / L, and the content of glucose is 12g / L , to obtain an electrolytic polishing solution after mixing evenly.

[0040] The ADC12 alloy EBSD sample was electrolytically polished using the above-mentioned alkaline electrolytic polishing solution. The polishing process was the same as that in Example 1, but the polishing time was 3 minutes during the electrolytic polishing.

[0041] After electrolytic polishing, the surface of ADC12 alloy has high brightness and smooth surface. After EBSD analysis, the calibration rate is high. image 3 It is the pattern diagram of EBSD image of ADC12 alloy after electrolytic polishing.

[0042] In the above alkaline electrolytic polishing solution, sodium ethylate is the basic component, which is decomposed into et