ISSN:
1573-4889
Schlagwort(e):
Stainless steel type 304L
;
high-temperature oxidation
;
X-ray photoelectron spectroscopy
;
secondary ion mass spectroscopy
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Maschinenbau
Notizen:
Abstract The reaction of cesium hydroxide vapor with 304 stainless steel has been studied over the temperature range 550–950°C in an argon atmosphere containing 3% water vapor and 4% hydrogen. A wide range of surface-analytical techniques has been used to identify the corrosion products, including scanning electron microscopy with energy-dispersive analysis of X-rays, X-ray photoelectron spectroscopy, Auger electron spectroscopy, secondary-ion mass spectrometry, and Raman spectroscopy. A nickel-sputter, ion-plating process was also used to separate the surface oxide layer from the underlying material, thus enabling the exposed interfaces to be examined. At 550°C, the cesium is physisorbed onto the iron hydroxide layer at the surface of the metal. At higher temperatures, most of the cesium is found as isolated cations within the inner chromia lattice, with no evidence for the existence of stable cesium-based compounds.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00666470
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