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Interaction of lithium-titanium polycrystalline ferrites with ambient air during their sintering is investigated using the methods of electroconductivity and thermal gravimetry within the temperature interval Т = 600-1300 K. It is found out that the temperatures exceeding Т = 1100 K correspond to effective course of reducing reactions in this material, which results in the formation of an oxygen-deficient ceramic structure in the stage of isothermal tempering (Т = 1280 К). It is shown that in the final cooling stage the process of exchange of the ferrite ceramics with the ambient atmosphere exhibits a pronounced oxidative character. The role of these redox processes in the formation of the oxygen non-stoichiometry of the sintered specimen and the depth of its distribution are analyzed.

The paper analyzes the Cr-B film structure formed via argon plasma-assisted deposition on pretreated 12Cr18Ni10Ti stainless steel using the COMPLEX electron-ion-plasma setup (IHCE SB RAS, Russia, Tomsk). The analysis shows that after simultaneous deposition of chromium and boron, the Cr-B film represents a multilayer structure consisting of alternating amorphous boron and nanocrystalline chromium boride layers. At a total film thickness of 1 μm, the thickness of its amorphous and nanocrystalline layers measures 2.0-7.0 and 2.0-2.5 nm, respectively. The steel layer adjacent to the film contains Fe₂B nanoparticles. Their presence in the steel is due to its preliminary electron beam irradiation and boriding. The micro-hardness of the Cr-B film is 29.0 GPa (standard deviation 4.1 GPa), and its Young's modulus is 200 GPa.

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