3 research outputs found
Self-Healing Phenomenon and Dynamic Hardness of C<sub>60</sub>-Based Nanocomposite Coatings
The
phenomenon of surface self-healing in C<sub>60</sub>-based
polymer coatings deposited by ion-beam assisted physical vapor deposition
was investigated. Nanoindentation of the coatings led to the formation
of a protrusion rather than an indent. This protrusion was accompanied
by an abnormal shape of the force–distance curve, where the
unloading curve lies above the loading curve due to an additional
force applied in pulling the indenter out of the media. The coatings
exhibited a nanocomposite structure that was strongly affected by
the ratio of C<sub>60</sub> ion and C<sub>60</sub> molecular beam
intensities during deposition. The coatings also demonstrated the
dynamic hardness effect, where the effective value of the hardness
depends significantly on the indentation speed