THE MELTING POINTS OF LITHIUM AND SODIUM UNDER PRESSURES UP TO 30,000 KG/CM2
Abstract
The melting point of Li(99.8%) and Na(99.9%) was measured in the pressure range from 1 to 30,000 kg/sq cm. The pressure was developed by compressing a mixture of isopentane with pentane in a superhigh pressure multiplier. The melting point was determined by the thermal analysis method with photographic recording of the cooling and heating curves of the specimen. The pressure was measured by a manganin manometer within an accuracy of + or - 100 kg/sq cm; the temperature was measured by an iron-nichrome thermocouple within an accuracy of + or - 1.5C. The melting point of Li and Na increased monotonically from 182 and 97.5 C, respectively, at atmospheric pressure to 234-248 C at a pressure of 30,000 kg/sq cm. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 27, 1961
- Accession Number
- AD0261833
Entities
People
- Ye. G. Ponyatovskiy
Organizations
- National Air and Space Intelligence Center