CHARACTERIZATION OF ULTRASTRUCTURES IN REFRACTORY COMPOUND DEPOSITION

THE PROJECT WILL DETERMINE THE CRYSTALLOGRAPHIC, COMPOSITIONAL AND STRUCTURAL PROPERTIES OF ULTRASTRUCTURES OR STRAINED LAYER SUPERLATTICES PRODUCED BY THE CVD DEPOSITION OF REFRACTORY METALS AND COMPOUNDS. SEM/EDAX METHODS PLUS X-RAY DIFFRACTION TECHNIQUES WILL BE USED FOR THE INVESTIGATIONS. BEND AND TENSILE TESTS PLUS MICROHARDNESS PROFILES WILL BE EMPLOYED TO DETERMINE THE STRUCTURAL INTEGRITY OF THE LAYERED STRUCTURES AND STRENGTH OF THE INTERLAYER BONDING AND MECHANICAL PROPERTIES OF THE MATRIX MATERIALS. THERMODYNAMIC MODELS AND CALCULATIONS WILL BE APPLIED TO REFINE AND OPTIMIZE THE EXPERIMENTAL PARAMETERS USED IN THE SYNTHESIS OF THESE ULTRASTRUCTURES. THE PROJECT WILL INVESTIGATE STRUCTURES IN THE (NB-NBN) AND (W-WC)SYSTEMS.