5418.2:
Theoretical Approach of the Tuning of Thermal Conductivity of Nanostructured Coatings
Abstract
The goal of this feasibility study is to elaborate a theoretical approach to design of the nanocrystalline coatings with low thermal conductivity (TC). Within this approach, the TC of the nanocrystalline coatings will be considered in terms of both phonon (up to ca. 1200 oC) and radiation mechanisms (above ca. 1200 oC). The model will comprise influence of the crystallite/crystallite, crystallite/defect and nanocoating/substrate boundaries. The role of nano-inclusions and morphological irregularities (e.g. pores) will be considered. The calculation of the TC of the concrete coatings will be performed using the elaborated theoretical dependence of TC on sintering parameters. The project is dealing with the fundamental aspect of the thermal conductivity of nanostructured properties. Therefore, this project is a Fundamental Technology Project.