Radiation-induced outgassing from Type 304 stainless steel

Journal Article · Thu Nov 01 04:00:00 EST 1979 · Nucl. Technol.; (United States)

OSTI ID:5893847

Toepker, T P ^[1]; Anno, J N

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1. Xavier Univ., Cincinnati, OH

A Type 304 stainless-steel vacuum system has been designed and constructed to study radiation-induced outgassing when this material is exposed to /sup 60/Co gamma radiation. An analytical model has been developed that predicts the outgassing from Type 304 stainless steel to be 5 x 10/sup -10/ Pa.l/cm/sup 2/.s per Mrad/h. Experiments determined the value for Type 304 stainless steel after bakeout at 300/sup 0/C to be (1.03 +- 0.58) x 10/sup -9/ Pa.l/cm/sup 2/.s per Mrad/h, in fair agreement with the analytical model predictions. Studies on thermally induced outgassing from Type 304 stainless steel showed that after bakeout at temperature T/sup */, thermal outgassing ..delta.. obeys the relationship ..delta.. = ..delta../sub 0/ exp(-anti Q/RT), where both the constant ..delta../sub 0/ and the average desorption energy anti Q are functions of T/sup */. Water vapor and hydrogen were the principal residual gases in a Type 304 stainless-steel vacuum system, with hydrogen being dominant at low pressures after bakeout.

• OSTI ID: 5893847
• Journal Information: Nucl. Technol.; (United States), Journal Name: Nucl. Technol.; (United States) Vol. 46:1; ISSN NUTYB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
DEGASSING
ELECTROMAGNETIC RADIATION
GAMMA RADIATION
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IONIZING RADIATIONS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
NICKEL ALLOYS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RADIATIONS
STAINLESS STEEL-304
STAINLESS STEELS
STEELS