Microhardness as a thermally activated process: Indentation time dependence for an amorphous copolyester

摘要

AbstractVickers microharness, MH, measurements have been performed on samples of a plasticized amorphous copolyterephthalate with different diluent contents. The dependence of MH on contact time is explained in terms of the Eyring equation and it has been found that the activation volume increases abruptly in the vicinity of the glass transition. © 1993 John WileySons, Inc