REINFORCEMENT OF NICKEL CHROMIUM ALLOYS WITH SAPPHIRE WHISKERS.
Abstract
It has been found that the effect of excessive oxygen in composites of iron with alumina whiskers is a progressive loss of tensile reinforcement with heating. This loss can be prevented by the addition of aluminum metal to the melt, removing excess oxygen after the bond has been formed. Tensile reinforcement of 280% has been observed in iron containing 20 w/o alumina whiskers. The use of ferrous acetate as a coating for alumina whiskers has produced evidence of wetting between iron and alumina. Nickel-clad whiskers were cleaned entirely of metalwhen contacted with molten 80% Ni-20% Cr alloy. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 25, 1963
- Accession Number
- AD0412758
Entities
People
- Robert H. Kelsey