Effect of polishing treatment and thermal oxidation on the total hemispherical thermal emittance of austenitic stainless steel AISI 321

Journal Article · Thu Jul 01 00:00:00 EDT 1982 · Energy (Stamford, Conn.); (United States)

DOI:https://doi.org/10.1016/0360-5442(82)90016-0· OSTI ID:5696498

Sharma, V C

The optimum value of the hemispherical thermal emittance (epsilonh) of austenitic stainless steel (SS AISI 321, polished with ''AB Polishing Alumina'' of particle sizes 0.05, 0.3, and 5.0 /sigma phi/m and abrasives of various grit sizes, is found to be 0.13 + or - 0.01 and is significantly lower than the corresponding value of 0.23 + or - 0.01 for the unpolished samples. Although the epsilonh value at a given firing temperatur is constant, a small but systematic upward trend exists when the temperature is raised from 823 to 1293 K. At a firing temperature of 1293 K and for firing times of 3 to 15 min. epsilonh increases from 0.15 to 0.22 + or - 0.01.

• Research Organization: Department of Physics, University of Benin, Benin City
• OSTI ID: 5696498
• Journal Information: Energy (Stamford, Conn.); (United States), Vol. 7:7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
STAINLESS STEEL-321
OXIDATION
POLISHING
ABRASIVES
ALUMINIUM OXIDES
AUSTENITIC STEELS
HEAT TREATMENTS
PARTICLE SIZE
THERMODYNAMICS
VERY HIGH TEMPERATURE
ALLOYS
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
NICKEL ALLOYS
OXIDES
OXYGEN COMPOUNDS
SIZE
STAINLESS STEELS
STEELS
SURFACE FINISHING
TITANIUM ADDITIONS
TITANIUM ALLOYS
360104* - Metals & Alloys- Physical Properties
360105 - Metals & Alloys- Corrosion & Erosion