| 1. |
Corrosion and materials testing/Korrosions‐ und Werkstoffprüfung |
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Materials and Corrosion,
Volume 36,
Issue 11,
1985,
Page 225-230
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PDF (1074KB)
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ISSN:0947-5117
DOI:10.1002/maco.19850361113
出版商:WILEY‐VCH Verlag GmbH
年代:1985
数据来源: WILEY
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| 2. |
Comprehensive papers covering several materials groups/Arbeiten über mehrere Werkstoffgruppen |
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Materials and Corrosion,
Volume 36,
Issue 11,
1985,
Page 230-233
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PDF (736KB)
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ISSN:0947-5117
DOI:10.1002/maco.19850361114
出版商:WILEY‐VCH Verlag GmbH
年代:1985
数据来源: WILEY
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| 3. |
Ferrous metals/Eisenmetalle |
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Materials and Corrosion,
Volume 36,
Issue 11,
1985,
Page 233-243
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PDF (2052KB)
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ISSN:0947-5117
DOI:10.1002/maco.19850361115
出版商:WILEY‐VCH Verlag GmbH
年代:1985
数据来源: WILEY
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| 4. |
Non‐ferrous metals/Nichteisenmetalle |
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Materials and Corrosion,
Volume 36,
Issue 11,
1985,
Page 243-250
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PDF (1461KB)
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ISSN:0947-5117
DOI:10.1002/maco.19850361116
出版商:WILEY‐VCH Verlag GmbH
年代:1985
数据来源: WILEY
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| 5. |
Non‐metallic inorganic materials/Nichtmetallische anorganische Werkstoffe |
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Materials and Corrosion,
Volume 36,
Issue 11,
1985,
Page 250-250
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PDF (190KB)
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ISSN:0947-5117
DOI:10.1002/maco.19850361117
出版商:WILEY‐VCH Verlag GmbH
年代:1985
数据来源: WILEY
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| 6. |
Metal coatings/Metallische Überzüge |
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Materials and Corrosion,
Volume 36,
Issue 11,
1985,
Page 251-253
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PDF (565KB)
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ISSN:0947-5117
DOI:10.1002/maco.19850361119
出版商:WILEY‐VCH Verlag GmbH
年代:1985
数据来源: WILEY
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| 7. |
Non‐metallic inorganic coatings/Nichtmetallische anorganische Überzüge |
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Materials and Corrosion,
Volume 36,
Issue 11,
1985,
Page 253-254
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PDF (371KB)
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ISSN:0947-5117
DOI:10.1002/maco.19850361120
出版商:WILEY‐VCH Verlag GmbH
年代:1985
数据来源: WILEY
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| 8. |
Organic coatings/Organische Überzüge |
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Materials and Corrosion,
Volume 36,
Issue 11,
1985,
Page 254-254
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PDF (191KB)
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ISSN:0947-5117
DOI:10.1002/maco.19850361121
出版商:WILEY‐VCH Verlag GmbH
年代:1985
数据来源: WILEY
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| 9. |
Electrochemical Impedance Spectroscopy of protective coatings |
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Materials and Corrosion,
Volume 36,
Issue 11,
1985,
Page 473-483
F. Mansfeld,
M. W. Kendig,
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PDF (1181KB)
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摘要:
AbstractElectrochemical impedance spectroscopy (EIS) carried out over a wide frequency range (105to 10−2Hz) allows us to obtain mechanistic information concerning corrosion protection by coatings. Examples are given for polymer coatings on an Al alloy as a function of surface petreatment and for anodized Al alloys. For polymer coatings on metals, information concerning the coating's properties and its changes with exposure time can be obtained from the high and medium frequency regions of the impedance spectrum, while the corrosion reaction at the metal/coating interface can be evaluated from the low frequency part. The pore resistance of the coating and its changes with exposure time have been used to rank different pretreatment procedures for a given metal/coating combination. For Al alloys, pronounced differences in corrosion resistance between a conversion coating and an anodized layer under a polyurethane coating have been observed. The use of a segmented electrode allows measurements of the impedance across as well as under a coating. From these data, information concerning delamination can be obtained. An example is given for an epoxy coating on steel.The use of EIS as a quality control and corrosion test for anodized Al alloys is discussed. The effects of the anodization procedure (sulfuric acid and chromic acid), sealing procedure (hot water and dichromate) and alloy chemistry (Al 2024, 6061 and 7075) have been studied during exposure to aerated 0.5 N NaCl. All these parameters play an important role in the corrosion resistance of the alloys. The sealing process can be evaluated from the high frequency part of the spectrum. Pronounced differences in the spectra for the two sealing procedures are observed. The corrosion behavior is reflected in the low frequency part, which is essentially dominated by barrier layer propertie
ISSN:0947-5117
DOI:10.1002/maco.19850361102
出版商:WILEY‐VCH Verlag GmbH
年代:1985
数据来源: WILEY
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| 10. |
Elektrochemische Untersuchung poröser Beschichtungen auf Metallen |
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Materials and Corrosion,
Volume 36,
Issue 11,
1985,
Page 484-488
K. E. Heusler,
M. Krebs,
K. Nachstedt,
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PDF (514KB)
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摘要:
AbstractEs wird eine galvanostatische Impulsmethode zur schnellen elektro‐chemischen Charakterisierung organischer Beschichtungen auf Metallen beschrieben. Die Theorie zeigt, daß es durch Messung bei verschiedenen Elektrolytleitfähigkeiten möglich ist, neben der Dielektrizitätskonstanten und der spezifischen Leitfähigkeit der Beschichtung auch Poren in der Beschichtung nachzuweisen, einen mittleren Porenradius zu berechnen und einen Polarisationswiderstand des Metalls im Kontakt mit dem Elektrolyten in den Poren zu bestimmen. Aus Messungen an verzinntem Stahlblech, das mit Epoxidharz beschichtet war, wurden mit Hilfe der Theorie Schichtparameter ermittelt, deren Größen den Erwartungen e
ISSN:0947-5117
DOI:10.1002/maco.19850361103
出版商:WILEY‐VCH Verlag GmbH
年代:1985
数据来源: WILEY
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