Abstract
The development of polymeric coatings for brittle substrates such as ceramics or glass is an important technological goal, the aim of which is to provide protection or enhance the mechanical properties of the substrate. In this work we propose a novel one-step approach, evaporation-driven self-assembly of polymers, to coat Al2O3 substrates with a thin nanocomposite coating. The films consist of polyvinyl butyrate polymer and either multi-walled carbon or tungsten disulfide nanotubes, which are found to improve both the strength and toughness of the brittle alumina substrates via crack bridging and crack propagation inhibition mechanisms.
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