Thermionic emission and atom vaporization of the Gd-B system

Journal Article · Tue Mar 31 23:00:00 EST 1981 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.329038· OSTI ID:6544168

Storms, E K; Mueller, B A

Thermionic emission, vapor composition, chemical activity, and weight loss have been measured over a range of compositions in the Gd-B system. Values are reported for various compositions in the GdB/sub 4/ phase and for one composition in the GdB/sub 6/ phase. The congruently vaporizing composition at 1700 K was found to be GdB/sub 4.03/ , with an effective work function of 3.27 eV. The work function of GdB/sub 6/ is near 4.02 eV. At congruency, the Gd-B system loses mass approximately twice as fast as the La-B system.

• Research Organization: University of California, Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87545
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6544168
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 52:4; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
BORIDES
BORON COMPOUNDS
CHEMICAL ACTIVATION
COMPARATIVE EVALUATIONS
DATA
EMISSION
EVAPORATION
FUNCTIONS
GADOLINIUM BORIDES
GADOLINIUM COMPOUNDS
INFORMATION
LANTHANUM BORIDES
LANTHANUM COMPOUNDS
PHASE TRANSFORMATIONS
QUANTITY RATIO
RARE EARTH COMPOUNDS
THERMIONIC EMISSION
VERY HIGH TEMPERATURE
WORK FUNCTIONS