Oxidation resistance of fine-grained sputter-deposited 304 stainless steel

Journal Article · Mon Jan 01 04:00:00 EST 1979 · Metall. Trans., A; (United States)

DOI:https://doi.org/10.1007/BF02686409· OSTI ID:6394261

Merz, M D

The air oxidation of free standing 0.1 cm thick sputter-deposited and wrought 304 stainless steel specimens was studied and the long term oxidation weight gains of the sputter-deposited material were much less than weight gains for the wrought material at 800, 900, and 1000/sup 0/C. The amount of scaling was also much less on the sputtered material and a thin, adherent oxide formed. The oxide on the sputtered material was more uniform in composition and was higher in chromium and manganese compared to oxide on wrought stainless and eventually formed MnCr/sub 2/O/sub 4/ after long periods of exposure. No stratified oxide layers, as typically observed in wrought stainless steel, formed on the fine-grained sputtered material. The improved scaling resistance of the sputter-deposited steel was attributed to a combination of grain boundary enhancement of chromium diffusion, reduced stresses in the oxide and mechanical keying of the oxide to closely spaced grain boundaries. The stability of grain size for the sputtered material (grain size less than or equal to 6 ..mu..m) also contributed to the better oxide adherence.

• Research Organization: Battelle Pacific Northwest Labs., Richland, WA
• OSTI ID: 6394261
• Journal Information: Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 10:1; ISSN MTTAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
FABRICATION
GRAIN SIZE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MICROSTRUCTURE
NICKEL ALLOYS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
SCALING
SIZE
SPUTTERING
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
TIME DEPENDENCE