Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 361, Issue 1-3, Pages 138-142Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfa.2010.03.013
Keywords
Bioinspired; Zirconium oxide; Nanoindentation; Transmission electron microscopy; Mechanical properties
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Uniform and well ordered zirconium oxide-organic nacre-like nanocomposites were synthesized by sequential solution deposition of zirconium oxide and organic LbL layers. The width of zirconia in threefold nanostructures was 75 nm, 95 nm and 170 nm, while the thickness of organic layer was 14 nm. A solution-deposited bulk zirconia layer with a thickness of 1 mu m served as a reference material. Mechanical properties measured using a depth-sensing nanoindentation technique exhibited systematic increase in hardness and reduced modulus of nanocomposites compared to the bulk sample. The measured hardness was 1.1 GPa, 0.77 GPa, 0.56 GPa, respectively and 0.55 GPa for the bulk sample. Reduced modulus of the same samples was 23 GPa, 17 GPa, 13 GPa, respectively and 12 GPa for the bulk sample. (C) 2010 Elsevier By. All rights reserved.
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