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taolili

新虫 (小有名气)

[求助] 镁合金电化学测试的几个问题(制样、腐蚀对结果影响、拟合)

小弟刚想做点电化学的东西,什么也不懂,想请教几个问题
我想测试镁合金的电化学极化曲线和交流阻抗谱,镁合金和铜导线好像不好焊接,请问怎样制样比较好?
另外我要测试的溶液pH=7,如果按照稳定开路电位--测阻抗谱--测极化曲线的步骤做,实验中发生的腐蚀会不会对阻抗谱和极化曲线的准确性有影响呢?
如果阻抗谱测试范围是1MHz到100mHz,单这一步需要多长时间;如果是1MHz到10微Hz 呢?
极化曲线用什么软件可以得到电位、电流密度值;阻抗谱怎样得到等效电路?
问题可能比较小儿科,还请大家详细指教,谢谢
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shamrocksu

铁杆木虫 (著名写手)

引用回帖:
36楼: Originally posted by Jackcd12 at 2013-09-11 21:45:26
Q的单位就是ohm^-1 cm^-2 s^n

您看看这个审稿人的话,我没明白是想让我把C值求出来还是把单位改正就行: 谢谢了
The units you show below are correct for CPE admittance. However, I have two comments. First, it is more common to report CPE magnitude, which would be the inverse of the admittance value. Second, it is strange in the jpg image you sent me that the units shown for Y0 have sec^0.5 rather than sec^n. I have never used ZSimp Win so I can't help you. You should contact the company to ask them about this. The exponent in the unit should be n.

As I mentioned, you can report the two values describing the CPE fit or convert to C in F/cm2, but you cannot simply replace the units of the CPE magnitude with F/cm2.

I hope this helps. Please clarify the situation with the software company.
①好好活着,因为我们要死很久很久…②青春就像卷卫生纸,看着挺多,用着用着就不够了…...
37楼2013-09-11 22:35:16
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taolili

新虫 (小有名气)

各种不给力啊,自己顶
2楼2012-11-06 15:06:21
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taolili

新虫 (小有名气)

难道大家都去忙科研去了
3楼2012-11-07 22:07:04
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wpc0071

新虫 (初入文坛)

应该是能够焊的上的,仔细一点。开路电位下不会对阻抗和极化曲线有影响。参数设置大概在100khz~10mhz左右
4楼2012-12-12 21:02:09
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