Lubricious silver tantalate films for extreme temperature applications

► Synthesis of AgTaO3 powders using the solid state synthesis technique ► Deposition of AgTaO3 monolithic and TaN/Ag nanocomposite coatings by unbalanced magnetron sputtering ► Wear testing of AgTaO3 and TaN/Ag coatings from 25 °C to 750 °C ► Friction coefficients in 0.06-0.15 range at 750 °C for the AgTaO3 monolithic coatings