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shuchangtuzi

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[求助] 电解抛光电流密度计算已有4人参与

请问电解抛光计算电流密度的时候面积用的是抛光面的面积还是整个样品的表面积？

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【答案】应助回帖

感谢参与，应助指数 +1

这个问题也困扰了我好几年～～～～
查了很多外文资料，算是搞清楚了
However, the etchant enlarges the appearance of these precipitates. The appearance of the etched microstructure depends strongly on the size and shape of the specimen, as well as on the exact current and potential applied. Anomalous effects around the edges of the specimen can be caused by current density variations during etching, therefore the light optical microscopy examination shall predominantly be done in the central regions of examined specimens.
Example 6 to 7 V dc
The current density normally varies from ~3 to 30 mA/mm2 depending on the shape of the etched cross-section and the degree of sensitization.