✦ LIBER ✦

Thermal expansion hysteresis in polycrystalline graphite

✍ Scribed by O.D. Slagle

Publisher: Elsevier Science
Year: 1969
Tongue: English
Weight: 866 KB
Volume: 7
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(69)90120-1

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✦ Synopsis

The length of polycrystalli~e graphite samples was measured as a function of temperature while cycling from 1000" to 24OO'C. A sample oriented perpendicular to the extrusion direction exhibited thermai expansion hysteresis for cycling to 2400" and 2200°C but little or no hysteresis for cycling to 2000" and 1800°C. A sample with parallel orientation displayed no measurable hysteresis when cycled to 2400°C. The results are discussed in terms of one dimensional models which allow simulation of crystallite cracking during cool down.

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