A FUNDAMENTAL INVESTIGATION OF THE ALLOYING BEHAVIOR OF THE RARE EARTHS AND RELATED METALS
Abstract
A number of minor modifications were incorporated into the Knudsen effusion apparatus, resulting in significant improvements in accuracy of the data obtainable. Vapor-pressure determinations of high-purity liquid Ag have been completed and agree excellently with published data. A series of Pr-Nd alloys in increments of 10 At.-% have been arc melted, and x-ray fluorescence analytical procedures were developed using these alloys as standards. Because of the low vapor pressure of Pr, necessitating higher operating temperatures, the use of W/Re thermocouples is now being considered. The Knudsen effusion apparatus has been found to serve as an excellent thermalanalysis unit. Good agreement was obtained between experimentally determined transition and melting temperatures of Pr and those in the literature. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1961
- Accession Number
- AD0256786
Entities
People
- Albert S. Yamamoto
- Charles E. Lundin
- Joseph F. Nachman
Organizations
- Denver Research Institute