Thickness of Anodic Oxide Films by Electron Microscopy

Ohh, S.; Carroll, K. G.

doi:10.1063/1.1735018

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1960

1978

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“…To obtain a finer periodicity with metals they, together with Pashley (21), overlapped nickel and gold crystals and obtained moiré patterns (153) with a spacing of 5.8 A. Measurement and standardization of vertical distances are also important. Ohh and Carroll (141) have recently measured the thickness of an anodic oxide film (NiO. Cr2Og) on stainless steel of 0.05-mm.…”

mentioning

confidence: 99%

Electron Microscopy

Rochow¹,

Thomas²,

Botty³

1960

Anal. Chem.

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mentioning

confidence: 99%

Electron Microscopy

Rochow¹,

Thomas²,

Botty³

1960

Anal. Chem.

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ESCA – Untersuchungen zum Aufbau von Oxid‐Schichten auf austenitischen Stählen nach Salpetersäurebeanspruchung.

Diekmann

Gräfen

Holm

et al. 1978

Materialwissenschaft Werkst

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Herrn Professor Dr. Otto Buyer zum 75. Geburtstag gewidmet Mittels ESCA wurden Zusammensetzung und Dicke der Oxidschichten ermittelt, die bei der Beanspruchung verschiedener austenitischer Chrom-Nickel-(Mo1ybdan)-Stahle in Salpetersauren unterschiedlicherKonzentration und Temperatur gebildet werden. Die a u k r e Schicht besteht aus Si02; darunter befindet sich eine chromreiche, molybdanhaltige Oxidschicht. Nickel ist a m Aufbau der Oxidschichten nicht beteiligt. In der metallischen Matrix unterhalb der Oxidschicht wurde eine Chromanreicherung nachgewiesen.By means of ESCA the composition and the thickness of passive films formed on austenitic stainless steels were investigated after the attack of nitric acid a t various temperatures and acid concentrations. The outermost layers of the oxide film consist of SiO2, then a layer rich of Cr-oxid follows, containing also some Mo in the four-and sixvalent state. Ni does not contribute to the oxide film. Cr is also enriched in the metal just below the oxide film. H. Diekmann, H. Grafen, R. Holm, E.-M. Horn und S. Storp 2. Werkstofftech. 9, 37-45 (1978)

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