The mechanical properties of (SN)X single crystals |
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| Authors: | Norman Brown C. K. Chiang |
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| Affiliation: | (1) Department of Metallurgy and Materials Science and Laboratory for Research on the Structure of Matter, University of Pennsylvania, 19104 Philadelphia, Pa, USA;(2) Department of Physics and Laboratory for Research on the Structure of Matter, University of Pennsylvania, 19104 Philadelphia, Pa, USA |
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| Abstract: | The compression stress-strain behaviour of single crystals of sulphur nitride, (SN)x, a metallic polymer, was measured in the ambient environment. Measurements were made both parallel and perpendicular to the chain axis on crystals which were about 1 mm in size. The plastic stress-strain behaviour resembled that of a highly anisotropic metal. Deformation to large strains produced a fibrilated structure which graphically exhibits the polymeric nature of (SN)x. Young's moduli parallel and perpendicular to the chain were 21 and 1.4 GPa respectively. An analysis of the possible slip systems in (SN)x indicated that there is only one easy glide system, (1 0 0) [0 0 1].Supported by the National Science Foundation MRL Program under Grant No. DMR 76-80994. |
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