HARD NANOCOMPOSITE COATINGS: THERMAL STABILITY, PROTECTION OF SUBSTRATE AGAINST OXIDATION, TOUGHNESS AND RESISTANCE TO CRACKING

摘要

The paper briefly reports on the present state of art in the field of hard nanocomposite coatings. It is divided in four parts. The first part is devoted to the enhanced hardness of nanocomposite coatings. The second part is devoted to the thermal stability of nanocomposite coatings, thermal cycling of nanocomposite coatings and formation of amorphous coatings with thermal stability and oxidation resistance above 1000°C using sputtering. The third part reports on new advanced hard nanocomposite coatings with enhanced toughness. The fourth part reports on flexible hard nanocomposite coatings resistant to cracking. It is shown that the hard coatings with enhanced toughness and resistance to cracking represent a new class of advanced protective and functional coatings with a huge application potential. At the end, trends of next development of the advanced hard nanocomposite coatings are outlined.