INITIAL RESULTS ON THE COMPATIBILITY OF AUSTENITIC STAINLESS-STEEL WITH CARBON-DIOXIDE

Technical Report · Tue Mar 01 04:00:00 EST 1960

OSTI ID:4084531

Draycott, A; Smith, R

An experiment was carried out on the oxidation behavior of an l8-8-Ti stabilized steel in CO/sub 2/ at 550 to 700 deg C under varying conditions of surface preparation, pressure, velocity, and impurity content of the gas. The rate of oxidation was followed by measuring the weight increase of specimens as a function of time of exposure in tests of up to 2500-hr duration. Supporting information on the nature of the oxidation process was obtained from metallographic studies and x-ray diffraction. It was found that workhardened surfaces oxidized at a much lower rate than etched surfaces. In the case of work- hardened surfaces, a protective film of Cr/sub 2/O/sub 3/ formed which persisted throughout the duration of the tests. On etched surfaces, rapid oxidation occurred to give a nonprotective multi-layer scale. In no case studied was there any evidence of car burization. Both pressure and velocity of the gas had considerable effects on the rate of attack of the steel. This investigation showed that in the ranges of pressure and velocity investigated, the 18-8-Ti austenitic stainlesssteel can be used in CO/sub 2/ at temperatures up to 675 deg C. (auth)

• Research Organization: Australia. Atomic Energy Commission Research Establishment, Lucas Heights, New South Wales
• NSA Number: NSA-15-005327
• OSTI ID: 4084531
• Report Number(s): AAEC/E-52
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AUSTENITE
CARBON DIOXIDE
CARBURIZATION
CHROMIUM OXIDES
DIFFRACTION
FILMS
GASES
IMPURITIES
MEASURED VALUES
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
OXIDATION
PERFORMANCE
PREPARATION
PRESSURE
STABILITY
STAINLESS STEELS
STEELS
SURFACES
TITANIUM
VELOCITY
WEIGHT
X RADIATION