Published April 1978 | Version v1
Journal article Metadata-only

Concentration profiles through a duplex oxide grown on 316 stainless steel

Creators

  • 1. Central Electricity Generating Board, Berkeley (UK). Research Dept.

Description

Concentration profiles through duplex scales formed on vacuum annealed 316 stainless steel have been investigated using neutron activation analysis and energy dispersive analysis. Good qualitative agreement between the two analytical techniques was obtained for chromium concentration profiles in the outer oxide. These indicated a low rate of chromium diffusion into the Fe3O4 layer. There was less agreement between the two methods in the inner oxide as the neutron activation results were complicated by the presence of metal in sections through this oxide layer. The energy dispersive results in this layer were consistent with previous findings which indicated conservative or non selective oxidatiion occurring. (orig.)

Abstract (German)

Konzentrationsprofile in auf vakuumangelassenem Stahl 316 entstandenem Duplex-Oxidzunder wurden mit Neutronenaktivierungsanalyse und energiedispersiver Analyse untersucht. Gute qualitative Uebereinstimmung zwischen den beiden Methoden ergab sich fuer das Konzentrationsprofil von Chrom in der aeusseren Oxidschicht; die Ergebnisse deuten auf eine geringe Geschwindigkeit der Stromdiffusion in die aeussere Magnetitschicht. Bei der inneren Oxidschicht ist die Uebereinstimmung zwischen den beiden Methoden weniger gut, da die Ergebnisse der Neutronenaktivierung durch die Anwesenheit von Metall in der Querschnittsflaeche verfaelscht werden. Die Ergebnisse der energiedispersiven Analysen dieser Schicht stimmen mit frueheren Befunden ueberein, wonach normale oder nichtselektive Oxydation auftritt. (orig.)

Additional details

Identifiers

DOI
10.1002/maco.19780290403;

Publishing Information

Journal Title
Materials and Corrosion
Journal Volume
29
Journal Issue
4
Series
Werkst. Korros.
Journal Page Range
246-250
ISSN
0947-5117

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
9394531
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ACTIVATION ANALYSIS; CHEMICAL COMPOSITION; CHROMIUM; CHROMIUM 51; DIFFUSION; DISTANCE; INTERFACES; IRON; IRON 59; LAYERS; MAGNETITE; MANGANESE; MOLYBDENUM; NICKEL; OXIDATION; OXIDES; OXYGEN; QUANTITY RATIO; SCALING; SILICON; SPATIAL DISTRIBUTION; STAINLESS STEEL-316; SURFACES; X-RAY EMISSION ANALYSIS
Descriptors DEC
ALLOYS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBON ADDITIONS; CHALCOGENIDES; CHEMICAL ANALYSIS; CHEMICAL REACTIONS; CHROMIUM ALLOYS; CHROMIUM ISOTOPES; CHROMIUM STEELS; CHROMIUM-NICKEL STEELS; CORROSION; CORROSION RESISTANT ALLOYS; DAYS LIVING RADIOISOTOPES; DISTRIBUTION; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTS; EVEN-ODD NUCLEI; HEAT RESISTING ALLOYS; INTERMEDIATE MASS NUCLEI; IRON ALLOYS; IRON BASE ALLOYS; IRON COMPOUNDS; IRON ISOTOPES; IRON ORES; IRON OXIDES; ISOTOPES; METALS; MINERALS; MOLYBDENUM ALLOYS; NICKEL ALLOYS; NONDESTRUCTIVE ANALYSIS; NONMETALS; NUCLEI; ORES; OXYGEN COMPOUNDS; RADIOISOTOPES; SEMIMETALS; STAINLESS STEELS; STEELS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS

Optional Information

Notes
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