Thin deposit films from oxidized gasoline on steel surfaces as determined by ESCA
Conference
·
OSTI ID:5679363
Fuel-derived deposits on injectors and elsewhere in engines can severely impair engine performance. A laboratory test procedure was developed to produce thin deposit films from oxidized fuel on steel. The deposit films were analyzed using ESCA (XPS) and depth profiling with Ar/sup +/ ions. The deposits were carbonaceous in nature with lesser amounts of oxygen, and small amounts of sulfur and nitrogen. The total sulfur concentration in the deposits was approximately five-ten times higher than the concentration of sulfur in the original gasoline. Ion bombardment preferentially removed oxygen from the deposit layer, revealing that sulfur in the deposits was in the form of oxygenated compounds (RSO/sub 2/R, RSO/sub 2/OR, ROSO/sub 2/OR, RSO/sub 2/OSO/sub 2/R) and removal of oxygen converted them to lesser or non-oxygen-containing compounds (RSR, RSOR, RSSR, RSSO/sub 2/R).
- OSTI ID:
- 5679363
- Report Number(s):
- CONF-8810120-
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
023000 -- Petroleum-- Properties & Composition
33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CORROSION
CORROSIVE EFFECTS
DEPOSITS
ENGINES
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUELS
GASOLINE
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
IRON ALLOYS
IRON BASE ALLOYS
LIQUID FUELS
OXIDATION
PETROLEUM PRODUCTS
STEELS
SULFUR COMPOUNDS
023000 -- Petroleum-- Properties & Composition
33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CORROSION
CORROSIVE EFFECTS
DEPOSITS
ENGINES
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUELS
GASOLINE
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
IRON ALLOYS
IRON BASE ALLOYS
LIQUID FUELS
OXIDATION
PETROLEUM PRODUCTS
STEELS
SULFUR COMPOUNDS