A Grüneisen Relation on Constant‐Pressure Lines
作者:
S. J. Burns,
Girish Dahake,
Zhong Ding,
Suresh Kudallur,
Sujeet Kumar,
Kangjie Li,
Ramakrishnan Srinivasan,
Ken Stack,
Natarajan Venkataraman,
Chuan Wang,
Fuqian Yang,
Yiyang Zhou,
期刊:
Journal of the American Ceramic Society
(WILEY Available online 1992)
卷期:
Volume 75,
issue 12
页码: 3341-3345
ISSN:0002-7820
年代: 1992
DOI:10.1111/j.1151-2916.1992.tb04431.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
Grüneisen's constant, γ, is ideally temperature‐independent on constant‐volume lines; a similar constant, λ, which is ideally temperature‐independent on isobaric lines, has been found. The comparison between γ and λ shows that both expressions contain the ratio of the volumetric thermal expansion coefficient to the specific heat capacity; γ has an additional temperature dependence due to the thermal part of the compressibility, whereas λ has only a slight thermal component due to the volume per unit mass. λ has been chosen so that λ=γ at the point where the temperature and pressure are both zero. For most materials it is expected that λ≥γ with a different temperature dependence. It is shown empirically for a selection of ceramics that λ is nearly temperature‐independent and has a val
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