This paper is concerned with establishing the correlation between some
mechanical, thermal and structural properties of Pbx(As2S3)100-x glassy
samples, x = 1, 2 and 3 at.%. Measurements of mechanical parameters were
performed using a Fischerscope HM2000 S nanoindentation device. The obtained
results indicated decrease in the microhardness as a function of the doping
element content, as well as a pronounced normal indentation size effect
(ISE) phenomenon in the range of lower indentation loads. In order to
describe the microhardness data in the ISE regime and to determine the load
independent microhardness value, the MPRS model was used. The increase in
glass transition temperature with heating rate observed in DSC curves was
described according to the Lasocka equation. The activation energy of
softening process was evaluated using the Kissinger?s method. The KAS model
was applied to estimate the activation energy as a function of the
conversion rate. Raman measurements were employed to investigate structural
changes due to Pb doping.
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