Scale Dependency Of The Mechanical
Response In Semi Brittle Nano Particles
Author(s)
Y. Katz & W. W. Gerberich
Abstract
Nano based material coating technology is frequently proposed for surface
modification. In this context, superior mechanical properties are emphasized
with beneficial implications on wear or other tribology aspects. Thus partially,
the initial condition for further progress along this avenue remains in the
exploration of small volume mechanical behavior. Nano particle properties as a
"building block" require better understanding for additional developments or
applications. For this purpose, the current paper selected silicon particles in the
range of 20–50 nm and mechanical tests were performed at an ambient
temperature. Mechanical response assisted by contact mechanic methodology
and fine features visualization by novel techniques provided quantitative
information to be analyzed. It becomes apparent that scale effect argumentations
might assist in explaining the distinction between sufficiently fine segments from
bulk properties.
Keywords: silicon, nano scale, contact mechanics, mechanical response.
1 Introduction
Engagement concerning the issue of the actual strength of metallic systems
evoked classical considerations particularly vis-à-vis the theoretical values gap.
Early investigations [1, 2] emphasized the role of internal or external defects to
be dominant variables in shaping or bounding the strength magnitude. With
respect to line defects "the whisker" characteristic [3] has been studied
introducing significant scale effect on the mechanical response. Studies that
intended to modify the material structure in order to achieve unique mechanical
properties have been also developed. A relevant example is the field of
Keywords
silicon, nano scale, contact mechanics, mechanical response.
Related Book
Other papers in this volume
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