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Thermal Expansion of Tetragonal PbO
Author(s) -
SORRELL CHARLES A.
Publication year - 1970
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1970.tb12032.x
Subject(s) - thermal expansion , tetragonal crystal system , isotropy , materials science , volume (thermodynamics) , oxygen , mineralogy , metallurgy , analytical chemistry (journal) , chemistry , thermodynamics , crystallography , optics , crystal structure , physics , organic chemistry , chromatography
Thermal expansion of tetragonal PbO, investigated by high‐temperature X‐ray diffraction in vacuum, is nearly isotropic, with the coefficient in the c 0 direction only slightly greater than that in the a 0 direction. Volume thermal expansion is only slightly greater than in massicot. Retardation of the litharge‐massicot transformation is tentatively interpreted as the result of very low oxygen partial pressures caused by catastrophic oxidation of the stainless‐steel sample holder and resulting oxygen scavenging by lead vapor.