Catalyst-free synthesis, structural, and mechanical characterization of twinned Mg2B2O5 nanowires.
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.
Tao
Xinyong
X
Department of Mechanical Engineering, University of South Carolina, 300 Main Street, Columbia, South Carolina 29208, USA.
Li
Xiaodong
X
D001881:Borates / Q000737:chemistry*; D001896:Boron Compounds / Q000737:chemistry*; D002384:Catalysis; D003460:Crystallization / Q000379:methods*; D004548:Elasticity; D006244:Hardness; D046911:Macromolecular Substances / Q000737:chemistry; D017616:Magnesium Compounds / Q000737:chemistry*; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013314:Stress, Mechanical; D013499:Surface Properties
D001881:Borates; D001896:Boron Compounds; D046911:Macromolecular Substances; D017616:Magnesium Compounds; C034034:magnesium borate; C042168:boron oxide