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- W1517795890 abstract "There is a wide spread interest in metal-ceramic nanocomposites due to their enhanced mechanical and magnetic properties when the size of metal particles is reduced to nano-scale. This paper presents results from our study of thin film ceramic-metal nanocomposites created by embedding nano-sized Ni metal particles in amorphous alumina matrix using pulsed laser deposition technique. Micro structural study of nanocomposites using high resolution transmission electron microscopy and scanning transmission electron microscopy with atomic number (Z) contrast (STEM-Z) have shown that nanocrystals of Ni are well separated from each other in alumina matrix. The size of nanoparticles is controlled by parameters of pulsed laser deposition method (deposition time and substrate temperature). Size of Ni nanoparticles is found to be 5-15 nm. Mechanical properties like hardness, elastic modulus and fracture toughness of samples having different particle size are investigated using nanoindentation continuous stiffness measurement (CSM) technique. Our results indicate that particle size has significant (up to 20%) effect on hardness of thin film composites. Fracture toughness of these nanocomposites has been studied using Li-Bhushan method and a method relating fracture toughness and residual stress." @default.
- W1517795890 created "2016-06-24" @default.
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- W1517795890 date "2008-03-26" @default.
- W1517795890 modified "2023-10-16" @default.
- W1517795890 title "Mechanical Properties of Ni Embedded Alumina Nanocomposite Thin Films" @default.
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- W1517795890 doi "https://doi.org/10.1002/9780470291191.ch96" @default.
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