Optothermal spectroscopy of CH3CN by a waveguide CO2 laser: Atlas of absorption lines

An investigation of the absorption of CH₃CN at 63 lines of a tunable waveguide CO₂ laser has been performed using the optothermal technique.     

Null-ellipsometry investigations of the optical properties and diffusion processes in spin-valve structures based on Co and Cu

The influence of annealing temperature (T_a = 300-900 K) on optical properties of the Au (4 nm)/Co (3 nm)/Cu (6-12 nm)/Co (20 nm)/SiO₂/Si spin-valve structures was studied. The model of Co, Au, and Cu atom interdiffusion was proposed based on the experimental data analysis. The formation of solid solutions at the thin layer interfaces Au/Co and Cu/Co was studied, and as a result the most intensive formation of solid solutions was identified at annealing temperature of T_a = 750 K. The optical parameters of the samples were calculated using the genetic algorithm. The spin-valve systems remain relatively unperturbed until 750 K, but the optical properties change significantly from 750 to 900 K. It can be explained by the formation of the interphase in multilayer thin film systems.     

Electroplating of chromium coatings from Cr(III)-based electrolytes containing water soluble polymer

The effect of certain water-soluble synthetic polymers on the current efficiency, the kinetics of partial cathodic reactions, and certain properties of coatings at the chrome plating from sulfate-formate baths based on Cr(III) salts is studied. A polymeric additive of the nonionogenic type N1 (3 × 10⁶ g/mol) is proposed, which favors the deposition of chromium coatings that have good adhesion to the surface, do not crack, and have a thickness of several tens micrometers. It is found that the polymers have an accelerating effect on the aggregation of the particles of the chromium-hydroxide sol formed in the near-electrode layer, which, apparently, improves the deposit quality and enhances the current efficiency. It is shown that the resulting amorphous-crystalline chromium deposits are sufficiently hard and exhibit good protectiven ability at the anodic dissolution in aggressive media. Original Russian Text ? F.I. Danilov, V.S. Protsenko, T.E. Butyrina, E.A. Vasil’eva, A.S. Baskevich, 2006, published in Zashchita Metallov, 2006, Vol. 42, No. 6, pp. 603–612.     

Obtaining perlite-alkaline suspension peptization for ceramic slips

Translated from Steklo i Keramika, No. 1, pp. 19–21, January, 1993.