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Office of Scientific and Technical Information
 

Oxidation sulfidation resistance of FE-CR-NI alloys

Patent ·
OSTI ID:6359574
;

High temperature resistance of Fe-Cr-Ni alloy compositions to oxidative and/or sulfidative conditions is provided by the incorporation of about 1-8 wt. % of Zr or Nb and results in a two-phase composition having an alloy matrix as the first phase and a fine grained intermetallic composition as the second phase. The presence and location of the intermetallic composition between grains of the matrix provides mechanical strength, enhanced surface scale adhesion, and resistance to corrosive attack between grains of the alloy matrix at temperatures of 500/sup 0/-1000/sup 0/ C.

Assignee:
Dept. of Energy
Patent Number(s):
US 4470848
OSTI ID:
6359574
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOY SYSTEMS
ALLOYS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION
CORROSION RESISTANCE
CRYSTAL STRUCTURE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH TEMPERATURE
INTERGRANULAR CORROSION
IRON ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
NICKEL ALLOYS
NIOBIUM ALLOYS
OXIDATION
PHYSICAL PROPERTIES
SULFIDATION
SURFACE PROPERTIES
TEMPERATURE EFFECTS
TERNARY ALLOY SYSTEMS
THERMODYNAMIC PROPERTIES
VERY HIGH TEMPERATURE
ZIRCONIUM ALLOYS