Stoichiometric Redox Reaction-Controlled, Combustion Assisted Spray Pyrolyzed Zirconia Films on Stainless Steel

Abstract In this contribution, an efficient aqueous solution combustion technique was implemented to achieve zirconia films on stainless steel substrates at 400 °C, by low capital and facile spray pyrolysis of a combustible precursor comprising stoichiometric amounts of zirconium oxynitrate hydrate and glycine. Detailed derivation of stoichiometric redox reaction is emphasized in the present work. Thermal behaviour of combustible precursor revealed the combustion temperature at ∼220 °C. Crystalline tetragonal zirconia film was deposited at 400 °C with a wavy morphological surface inferred from diffraction patterns and microstructural studies, respectively. Besides, an approach to fabricate spray pyrolysed YSZ films through combustion at 400 °C was successfully accomplished. These films can have a potential impact on biomedical and thermal barrier applications.