1986
DOI: 10.4028/www.scientific.net/msf.8.315
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Water Uptake of Polymer Coatings: New Investigation of the Early Stages by the Electrochemical Impedance Method

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Cited by 8 publications
(4 citation statements)
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“…50 µM) and its efficiency was about 52 %. This result is in agreement with literature [17,32,37]. It is also seen that in absence of PHPT, no film capacitance was detected but in its presence, the film capacity values decrease with CTAB addition.…”
Section: Effect Of Ctab On Phpt Inhibitionsupporting
confidence: 93%
See 1 more Smart Citation
“…50 µM) and its efficiency was about 52 %. This result is in agreement with literature [17,32,37]. It is also seen that in absence of PHPT, no film capacitance was detected but in its presence, the film capacity values decrease with CTAB addition.…”
Section: Effect Of Ctab On Phpt Inhibitionsupporting
confidence: 93%
“…This change may be explained by the modification of the corrosion mechanism. Thus, in absence of PHPT, the corrosion rate was essentially controlled by the diffusion process of dissolved oxygen whereas in its presence, the activation process prevails the corrosion rate in agreement with a low corrosion current density [37]. Table 6.…”
Section: Effect Of Temperaturementioning
confidence: 77%
“…A similar conclusion of the existence of a single time constant has been reported by Lo et al [26], Zeller [27] and Van Der Kouwe [28] for the corrosion of electroless Ni-P coatings in sodium chloride and sodium hydroxide solutions at the respective open circuit potentials. To further validate this view, the calculated R ct and C dl values are substituted for the proposed equivalent electrical circuit to obtain theoretical impedance values [29], which are also plotted along with the experimental impedance values in Fig. 1a±d.…”
Section: Resultsmentioning
confidence: 99%
“…La gravimétrie peut être utilisée mais elle est souvent délicate à mettre en oeuvre car des phénomènes d'extraction de petites molécules présentes dans le film (plastifiants, additifs, inhibiteurs…) se superposent à la diffusion de l'eau. La mesure de l'impédance électrochimique tend à se développer car elle apporte des informations plus précises sur la pénétration de l'eau dans un revêtement appliqué sur un support métallique [5][6][7][8][9][10]. Lorsque la détermination de la quantité d'eau pré-sente n'est pas suffisante et que l'on souhaite obtenir des informations sur la distribution de l'eau dans les polymères, il est possible d'utiliser la micrographie RX ou l'imagerie RMN [11][12][13].…”
Section: Introductionunclassified