Mechanical stress relaxation in inorganic glasses studied by a step-strain technique

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dc.contributor.authorBöhmer, Roland
dc.contributor.authorSenapati, H.
dc.contributor.authorAngell, C. A.
dc.date.accessioned2008-06-18T12:05:30Z
dc.date.available2008-06-18T12:05:30Z
dc.date.issued1991-06-11
dc.description.abstractA computer-controlled transient viscoelastometer, which is an adaption of the Rheovibron, has been developed to study the mechanical stress relaxation of amorphous materials over a range of more than five decades in time. The instrument was used to investigate the degree of non-exponentiality of the tensile stress autocorrelation function of AgI---Ag2SO4---Ag2WO4 and Ge---As---Se glasses. Upon variation of the composition, both ternary systems show large variations of the smearing of the calorimetric glass-transition anomaly. For most cases low-noise decay functions could be observed which are well fitted by stretched exponentials. For 50AgI·25Ag2SO4·25Ag2WO4 an exceptionally broad distribution of relaxation times is found. This is consistent with the sub-Tg specific heat peak previously observed in these mixed oxyanion glasses. For pure amorphous selenium two distinct relaxation processes are observed.en
dc.identifier.citationBöhmer, R.; Senapati, H.; Angell, C. A.: Mechanical stress relaxation in inorganic glasses studied by a step-strain technique. In: Journal of Non-Crystalline Solids Jg. 131-133(1991), S. 182-186, doi: 10.1016/0022-3093(91)90295-H.de
dc.identifier.urihttp://hdl.handle.net/2003/25714
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-3309
dc.identifier.urlhttp://dx.doi.org/10.1016/0022-3093(91)90295-H
dc.language.isoende
dc.publisherElsevier Sciencede
dc.rightsCopyright © 1991 Published by Elsevier Science B.V.en
dc.subject.ddc530
dc.titleMechanical stress relaxation in inorganic glasses studied by a step-strain techniqueen
dc.typeTextde
dc.type.publicationtypearticlede
dcterms.accessRightsrestricted

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