10.1021/ic50016a044
The main content of the study revolves around the chemical reactions involving various nitrides and oxygen difluoride (O2F2). The research explores the fluorination of different types of nitrides, such as lithium nitride (Li3N), beryllium nitride (Be3N2), magnesium nitride (Mg3N2), boron nitride (BN), silicon nitride (Si3N4), titanium nitride (TiN), vanadium nitride (VN), and copper(I) nitride, using elementary fluorine. The aim is to establish if there is a relationship between the structure of a nitride and the formation of nitrogen trifluoride (NF3) as a product of its direct fluorination. Additionally, the study investigates the reaction of oxygen difluoride with sulfur dioxide, sulfur trioxide, and peroxydisulfuryl difluoride, focusing on the photochemical decomposition and the role of 0-F radical species as reaction intermediates. The experiments involve irradiating gaseous mixtures with ultraviolet light to observe the reactions and identify the products, which include peroxysulfuryl difluoride, pyrosulfuryl fluoride, sulfuryl fluoride, and fluorine fluorosulfonate, among others. The study employs various analytical techniques such as infrared and F19 n.m.r. spectroscopy to characterize the compounds formed.
10.1007/BF00553698
The study investigates the formation of titanium nitride (TiN) and titanium carbonitride (TiCN) films using ion beam assisted deposition (IBAD) and reactive ion beam assisted deposition (RIBAD) techniques. Titanium is evaporated and simultaneously irradiated with nitrogen ions to form TiN, while the introduction of acetylene (C2H2) leads to the formation of TiCN. The research examines how the composition, purity, hardness, adhesion, and corrosion resistance of these films are influenced by process parameters such as nitrogen ion current density and reactive gas pressure. The study finds that the hardness of TiN films can reach up to 2800 kg/mm2 and TiCN films up to 4000 kg/mm2, with adhesion values of up to 15 N for TiN and 10 N for TiCN. Both coatings significantly reduce the corrosion rate of stainless steel in seawater, demonstrating their potential as protective coatings.
