Mechanical Spectroscopy of Annealing Effects in Electrodeposited Nickel/Ceramic Nanocomposites

Abstract:

The annealing behaviour of temperature-dependent mechanical spectra (vibrating-reed technique) was studied on electrodeposited ultrafine-grained nickel as well as on Ni nanocomposites with small (7 nm) SiO₂ or larger (25 nm) Al₂O₃ nanoparticles. From the response of the different phenomena involved – Young’s modulus, high-temperature damping background, dislocation-and hydrogen-induced low-temperature loss peaks, and magnetomechanical effects – information is obtained on processes such as recovery, grain growth, hydrogen trapping, and dislocation generation by thermal stresses, which are influenced by both kinds of nanoparticles in different ways.

• Periodical: Solid State Phenomena (Volume 184)
• Pages: 295-300
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.184.295
• Online since: January 2012
• Authors: H.R. Sinning, G. Vidrich, Werner Riehemann
• Keywords: Damping, Dislocation, Electro-Deposition, Hydrogen, Nickel/Ceramic Nanocomposites, Recovery, Young's Modulus

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