Anomalies in the plasticity of solid methane compared with other cryocrystals
A. V. Leont’evaPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskV. A. RomanushaPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskA. Yu. ProkhorovPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskL. A. VashchenkoPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, Donetsk
ABI
Abstract
The plasticity of solid methane has been studied for free-standing specimens, 30 mm in length and 6 mm in diameter, under uniaxial stress. An anomalously high plastic deformation (εf > 50%) was found for methane at low temperatures, 12–26 K. In this temperature range, crystalline argon, which has equilibrium thermodynamic characteristics similar to those of methane, is practically a brittle material for which εf < 1%.
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