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  • Catalyst-free synthesis, structural, and mechanical characterization of twinned Mg2B2O5 nanowires.

Catalyst-free synthesis, structural, and mechanical characterization of twinned Mg2B2O5 nanowires.

Nano letters (2008-01-09)
Xinyong Tao, Xiaodong Li
ABSTRACT

Mg2B2O5 nanowires with (010) twins were synthesized for the first time using a catalyst-free method. The microstructure of the Mg2B2O5 nanowires has been extensively studied by cross-sectional high-resolution transmission electron microscopy. Nanoindentation tests were performed directly on individual nanowires to probe their mechanical properties. It was found that the twinned Mg2B2O5 nanowires achieve comparable hardness but 19% decrease in elastic modulus compared to their bulk counterpart. The elastic softening mechanisms of the Mg2B2O5 nanowires are discussed with reference to their twin defects, size, and surface effects.

MATERIALS
Product Number
Brand
Product Description

Supelco
Boric anhydride, 99.98% trace metals basis
Sigma-Aldrich
Boric anhydride, puriss. p.a., ≥98% (T)
Sigma-Aldrich
Boric anhydride, 99.999% trace metals basis
Sigma-Aldrich
Boric anhydride, granulated, ≥98.0% (T)