THE OXIDATION OF ZIRCONIUM

Journal Article · Mon May 21 04:00:00 EDT 1962 · Compt. rend.

OSTI ID:4803295

Debuigne, J; Lehr, P

Oxidation tests were made at atmospheric pressure between 600 and 850 deg C under dried oxygen on samples of Kroll zirconium chemically polished. The oxidation phenomenon obeys a single kinetic of the form m/sup n/ = Kt, where m is the gain in mass in mg per cm/sup 2/ and t is the time in hours. The exponent n has the mean value 2.3, close to the value 2 corresponding to a parabolic law. The constant K obeys the Arrhenius law, and an activation energy of the order of 30 kcal per mole was determined. Typical transmission micrographs of oxide films are shown. The x-ray diffraction patterns show that at the beginning of the oxidation the oxide layer is constituted essentially of monoclinic zirconium. (J.S.R.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-16-027648
• OSTI ID: 4803295
• Journal Information: Compt. rend., Journal Name: Compt. rend. Vol. Vol: 254
• Country of Publication: Country unknown/Code not available
• Language: French

Related Subjects

ACTIVATION ENERGY
ARRHENIUS EQUATION
CHEMICAL REACTIONS
CLEANING
COMMUNICATIONS
CONFIGURATION
DIAGRAMS
DIFFRACTION
ELECTROLYSIS
EQUATIONS
FILMS
HIGH TEMPERATURE
IONS
KROLL PROCESS
LAYERS
MASS
METALS, CERAMICS, AND OTHER MATERIALS
MICROSCOPY
OXIDATION
PRESSURE
REACTION KINETICS
REDUCTION
SAMPLING
SELF-DIFFUSION
TESTING
THERMODYNAMICS
X RADIATION
ZIRCONIUM