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yaingy

木虫 (小有名气)


[交流] 文献EIS谱图的分析没看懂,请大家赐教啊

文献:The aspolished samples showed a dramatic decrease of the impedance in the capacitive region, which is characteristic for the pitting process on steel. The polarization resistance of as-polished sample (Rp0) is 2.8 Ω. Subtracting this value from the Rp of Ni–P (RpNi–P−Rp0) results in 1.2 Ω. Increasing magnitude of the resistance of the barrier layer indicates better corrosion performance. In addition, the phase angle θ tended toward zero at low frequencies indicating that the resistance of the barrier layer was being approached. An additional maximum of θ was observed for Ni–P coated samples, as evident in Fig. 1B. These changes of the spectra at very low frequencies indicate the occurrence of pitting.
1 请问capacitive region的范围是什么?
2 为什么要RpNi–P−Rp0 ?polarization resistance 是由极化曲线得到还是阻抗谱得到?Increasing magnitude of the resistance of the barrier layer indicates better corrosion performance这句话的原理是什么?
3 为什么在低频处θ接近零时候indicating that the resistance of the barrier layer was being approached?
4 An additional maximum of θ was observed for Ni–P coated samples, as evident in Fig. 1B. These changes of the spectra at very low frequencies indicate the occurrence of pitting.这个是怎么得出的,可以详细说明一下吗?
各位赐教啦!谢谢!问题有点多,呵呵

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如是嘉彦

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小木虫: 金币+0.5, 给个红包,谢谢回帖
你好,因为我和你的工作领域不同,所以提不出什么专业性的东西.不过我建议你可以先看一些你专业方面关于交流阻抗的中文文献,便于你更深的理解.祝工作顺利!
5楼2013-05-15 11:45:56
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gzl9901

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小木虫: 金币+0.5, 给个红包,谢谢回帖
祝您多发EI,SCI,TRANS,……
3楼2013-05-14 14:07:34
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yaingy

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引用回帖:
3楼: Originally posted by gzl9901 at 2013-05-14 14:07:34
祝您多发EI,SCI,TRANS,……

看不懂很苦恼啊
4楼2013-05-14 18:56:52
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