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Issue 28, 2014
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The superelastic mechanism of Si3N4 microsprings using micro-Raman spectroscopy

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Abstract

Silicon nitride microsprings with superelasticity are characterized using SEM, XRD, TEM and micro-Raman methods. The internal structure and the superelastic mechanism of silicon nitride microsprings are proposed through analyzing the variation of Raman peaks upon stretching gradually. During the stretching process, since all the vibrations are internal vibrations within the primitive unit cell, the basic structure has no changes and the residual stress never concentrates. The special structure of the fine grains and no sharp grain boundaries make the silicon nitride microsprings possess such good superelastic properties.

Graphical abstract: The superelastic mechanism of Si3N4 microsprings using micro-Raman spectroscopy

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Publication details

The article was received on 01 May 2014, accepted on 24 May 2014 and first published on 28 May 2014


Article type: Paper
DOI: 10.1039/C4CP01881H
Phys. Chem. Chem. Phys., 2014,16, 14808-14812

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    The superelastic mechanism of Si3N4 microsprings using micro-Raman spectroscopy

    Y. Fu, J. Li and C. Cao, Phys. Chem. Chem. Phys., 2014, 16, 14808
    DOI: 10.1039/C4CP01881H

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