ROLE OF RARE EARTH ADDITIONS IN THE PHENOMENON OF HOT CORROSION.
Abstract
The severity of attack in the hot corrosion of nickel-base superalloys is greatly reduced in alloys containing a dispersoid of CeO2 or La2O3. These oxides interact with the sulfur entering the alloy from Na2SO4 decomposition, by forming an oxysulfide of the type M2O2S. In this way less Ni3S2 is formed, and hence less catastrophic oxidation. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1969
- Accession Number
- AD0700948
Entities
People
- Alan U. Seybolt
Organizations
- General Electric