OXIDATION, HYDRIDING, AND AQUEOUS CORROSION OF U$sub 3$Si ALLOYS.
Specimens of U{sub 3}Si were heated in air and in hydrogen at temperatures up to 550 degC and the products of reaction studied. The phases observed in these tests are compared with those which form in U{sub 3}Si samples corroded in high temperature water. The aqueous corrosion of U{sub 3}Si is mainly an oxidation reaction although limited hydriding may also occur as a secondary reaction. The oxidation of U{sub 3}Si either in air or water appears to be a multi-step process in which most of the phases of the uranium-silicon system form. Due to the kinetics of formation and stability of the phases at various temperatures all are not observed in an individual test. Although molecular hydrogen will not react with U{sub 3)Si directly, in some cases it will react with free uranium to form UH{sub 3}. If the UH{sub 3} is subsequently oxidized, nascent hydrogen will be released which will react with the U{sub 3}Si.
- Research Organization:
- Atomic Energy of Canada Ltd., Chalk River (Ontario). Chalk River Nuclear Labs.
- NSA Number:
- NSA-26-018109
- OSTI ID:
- 4697664
- Report Number(s):
- AECL--3862
- Country of Publication:
- Canada
- Language:
- English
Similar Records
URANIUM COMPATABILITY STUDIES. PART 6. THE PRODUCTS AND MECHANISM OF THE URANIUM--WATER AND URANIUM HYDRIDE--WATER REACTIONS.
DEVELOPMENT AND PROPERTIES OF URANIUM-BASE ALLOYS CORROSION RESISTANT IN HIGH TEMPERATURE WATER. PART III. CORROSION MECHANISM OF URANIUM-BASE ALLOYS IN HIGH TEMPERATURE WATER
Related Subjects
AIR/reactions with uranium silicide at 550$sup 0$C
mechanisms of
CHEMICAL REACTIONS
CORROSION
HEATING
HIGH TEMPERATURE
HYDRIDES
HYDROGEN
HYDROGEN/reactions with uranium silicide at 550$sup 0$C
mechanisms of
N50110* --Metals
Ceramics
& Other Materials--Ceramics & Cermets--Corrosion & Erosion & Surface Phenomena
OXIDATION
REACTION KINETICS
TESTING
URANIUM SILICIDES
URANIUM SILICIDES/corrosion by water at 350 to 550$sup 0$C
mechanisms of
URANIUM SILICIDES/hydridation at 550$sup 0$C
mechanisms of
URANIUM SILICIDES/oxidation by air at 550$sup 0$C
mechanisms of
WATER
WATER/corrosive effects on uranium silicide at 350 to 550$sup 0$C
mechanisms of