Thermal Expansion of Polycrystalline Graphite

Autor:	Choll K. Jun, Robert G. Naum
Rok vydání:	1970
Předmět:	Condensed Matter::Materials Science Crystallinity Hysteresis Materials science Impurity General Physics and Astronomy Focal length Graphite Crystallite Composite material Grain size Thermal expansion
Zdroj:	Journal of Applied Physics. 41:5092-5095
ISSN:	1089-7550 0021-8979
Popis:	Thermal expansion characteristics of a group of polycrystalline graphites have been measured to 2400°C by a method which permits acquisition of meaningful expansion data without resorting to reference standards. Direct measurements on specimens while in the furnace were accomplished by using two 8‐in. focal length Gaertner optical micrometers. Thermal expansion behavior is discussed in relation to orientation, impurity, degree of crystallinity, and grain size. Specimens were heated from room temperature to 2400°C, then cooled to room temperature, taking measurements of thermal expansion throughout both heating and cooling cycles. The existence of hysteresis is observed and discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2ef23269b22d6e2a4dd3eeb360565926 https://doi.org/10.1063/1.1658613 Zobrazit plný text záznamu