Journal
SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY
Volume 48, Issue 4, Pages 365-374Publisher
PLEIADES PUBLISHING INC
DOI: 10.3103/S1068375512040072
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Funding
- Moldovan-Romanian Collaborative Research Project [10.820.05.21/RoF]
- Romanian Bilateral Project [428/15.06.2010]
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The microstructure, as well as the mechanical and thermal properties, of phosphate glasses (PhGs) doped with rare earth elements (REEs), namely, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, and Yb, were studied in the present paper. The strength parameters of the PhGs and their dependence on the load value modification were estimated by the dynamic indentation method. Three specific stages were revealed in the deformation process, including nano-, submicro-, and microdeformation. The factors responsible for each stage were determined. It was shown that the strength properties (Young's modulus and hardness) and the thermal characteristics (the lower and upper annealing temperature, the softening temperature, and the vitrification temperature) exhibit no evident relationship with the atomic mass and ionic radius of an REE. An assumption was made that the elastic and plastic properties of PhGs can be determined by the internal structure of the glasses.
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