|Author||Pemsler, J. P.|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Publisher||The Electrochemical Society|
|Subject Keyword||MATERIALS SCIENCE ♦ COLOR ♦ DIFFUSION ♦ FILMS ♦ HARDNESS ♦ HIGH TEMPERATURE ♦ MEASURED VALUES ♦ METALLOGRAPHY ♦ OXIDATION ♦ OXIDES ♦ OXYGEN ♦ PHASE DIAGRAMS ♦ QUANTITATIVE ANALYSIS ♦ SOLUTIONS ♦ THICKNESS ♦ ZIRCONIUM ♦ ZONES|
|Abstract||The oxygen gradient beneath the oxide film on zirconium oxidized at 850 deg C for times ranging from 8 to 305 hr was measured. The technique used involves the measurement of the rate of dissolution of interference colored oxide films. Experimentally determined gradients are in good agreement with a theoretical expression involving the diffusivity, time, and oxide film thickness. Metallography and microhardness measurements demonstrated the existence of a number of phases in the oxygen containing metal substrate. These are believed to be associated with orderdisorder reactions. No evidence of zones of constant composition or steady-state gradients was observed.|
|Learning Resource Type||Article|
|Publisher Department||Kennecott Copper Corp., Lexington, Mass.|
|Journal||Journal of the Electrochemical Society|
|Organization||Kennecott Copper Corp., Lexington, Mass.|
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