一些关于极化曲线Tafel外推求腐蚀速率的文献？一些关于极化曲线求腐蚀速率的文献，真的有用，与各位共享。附件1.论述极化曲线外推法求算腐蚀速率的可行性。This paper discusses the validity and limitations of the Tafel extrapolation method for thedetermination of corrosion rates for activation-controlled corrosion processes. Experimentalcorrosion rates determined by the Tafel method are compared with corrosion rates obtainedby an independent chemical (i.e., non-electrochemical) method for iron in hydrochloric acid,iron in 3.5% NaCl, and for titanium in boiling 1 M sulfuric acid. The methods of confirmationof the corrosion rates involved colorimetric analysis of the dissolved cation or the use of anion-implanted inert Xe marker. Additional examples taken from the literature involving othermetals and other methods of validation are also discussed.附件2.关于极化曲线在镁合金中的应用，比较了用极化曲线得出的镁合金腐蚀速率和用失重、析氢法得出的腐蚀速率之间的差异，论述极化曲线求镁合金腐蚀速率的可行性。The hypothesis that the corrosion of Mg alloys can be adequately estimated using Tafel extrapolation ofthe polarisation curve is termed herein the electrochemical measurement hypothesis for Mg. In principle,such a hypothesis can be disproved by a single valid counter example. The critical review of Mg corrosionby Song and Atrens in 2003 indicated that, for Mg alloys, Tafel extrapolation had not estimated the corrosionrate reliably. This paper examines the recent literature to further examine the electrochemicalmeasurement hypothesis for Mg. The literature shows that, for Mg alloys, corrosion rates evaluated byTafel extrapolation from polarisation curves have not agreed with corrosion rates evaluated from weightloss and hydrogen evolution. Typical deviations have been 50–90%. These were much larger than theprecision of the measurement methods and indicate a need for careful examination of the use of Tafelextrapolation for Mg. For research that nevertheless does intend to use Tafel extrapolation to elucidatecorrosion of Mg associated with service, it is strongly recommended that these measurements be complementedby the use of at least two of the three other simple measurement methods: (i) weight loss rate,(ii) hydrogen evolution rate, and (iii) rate of Mg2+ leaving the metal surface. There is much better insightfor little additional effort.附件3.论述了关于极化曲线求腐蚀速率必须具备的条件。A short review of previous attempts to determine Tafel slopes and corrosion rates fromdata obtained in the pre-Tafel region of polarization curves is followed by a description ofthe approach taken in the POLFIT program. Several examples are given of the applicationof this program including the use of factorial design experiments to determine the optimumconditions for formation of a chromate-free conversion coating on hot dipped galvanizedsteel.无 重复 ！查看更多3个回答 . 17人已关注
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