Corrosion of metals by hydrazine
The mechanism of corrosion of metals by hydrazine has been studied by means of coupons in sealed ampoules and by electrochemical techniques. The variables considered were temperature, CO/sub 2/ impurity level, alloy composition and microcrystalline structure. The coupon studies to date verify that increasng temperature and the presence of CO/sub 2/ does increase the corrosion rate as expected. The presence of molybdenum in stainless steels to the 3 percent level is not necessarily deleterious, contrary to published reports. The influence of microcrystalline structure and surface characteristics are more dominant effects. However, with Ti-6Al-4V, two different microcrystalline structures showed no significant differences. Corrosion rates of CRES 304 L in hydrazine have also been measured by several electrochemical techniques such as Tafel plots, polarization resistance and A. C. impedance. This is the first documented work to show that A. C. impedance can be used with non-aqueous solvents. Preliminary data correlated satisfactorily with the results of the coupon studies.
- OSTI ID:
- 5894551
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINIUM ALLOYS
CORROSION
HYDRAZINE
CORROSIVE EFFECTS
STAINLESS STEEL-304
TITANIUM BASE ALLOYS
VANADIUM ALLOYS
CARBON DIOXIDE
ELECTROCHEMISTRY
EXPERIMENTAL DATA
IMPURITIES
MICROSTRUCTURE
MOLYBDENUM
TEMPERATURE DEPENDENCE
ALLOYS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
DATA
ELEMENTS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
METALS
NICKEL ALLOYS
NITROGEN COMPOUNDS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
STAINLESS STEELS
STEELS
TITANIUM ALLOYS
TRANSITION ELEMENTS
360205* - Ceramics
Cermets
& Refractories- Corrosion & Erosion