Dissociation pressure of yttrium polonide

Journal Article · Wed Jan 01 04:00:00 EST 1975 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:7361664

Abakumov, A S; Ershova, Z V

An instrument of the Knudsen effusion method was developed, using a water-cooled sealed-off evacuated ampoule, in which the effusion cell with the sample was heated with high-frequency currents. The temperature dependence of the dissociation pressure of yttrium polonide, expressed by the equation: log P/sub mm/ = (6.40 +- 0.13) to (15,600 +- 190)/T, was determined by this method in the interval 1300 to 1600/sup 0/C. The calculated enthalpy of the process was equal to 71.4 kcal/mole. It was established that radiogenic lead, formed during the storage of yttrium polonide, does not have any appreciable influence on its dissociation pressure.

• OSTI ID: 7361664
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 17:2; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
DISSOCIATION
FLUID FLOW
GAS FLOW
INTERMETALLIC COMPOUNDS
KNUDSEN FLOW
POLONIUM ALLOYS
PRESSURE DEPENDENCE
TEMPERATURE DEPENDENCE
YTTRIUM ALLOYS