Structural and chemical changes are considered at contact of some coating materials and sodium–potassium or sodium liquid glass solutions. Behaviour and phase composition of stock mix for the welding electrode coating ingredients are determined by the methods of thermal and roentgen-phase analyses.

The effect of the cooling rate on the microstructure, micromechanical properties, and thermal residual stresses of magnetron sputtering targets made of cast resistance alloys Si-10% Ni-4% Fe and Si-15% Ni-6% Fe is studied. The optimum cooling rates of castings that provide a homogeneous fine-grained structure, high strength characteristics, and the minimum level of residual stresses in the targets are found.

The effect of the cooling rate on the microstructure, micromechanical characteristics, and residual thermal stresses of targets from a Si-30% Co alloy is studied. The required quality of the targets from this alloy can be obtained at a cooling rate in the range 5–50°C/s. The alloy structure is homogeneous and fine-grained and is characterized by high strength properties. The level of residual stresses in the target is minimal, and their distribution is uniform.

The thermolysis of complexes [Co(NH 3 ) 6 ][Fe(CN) 6 ] and [Co(NH 3 6 ] 4 [Fe(CN) 6 ] 3 under an air or hydrogen atmosphere at 200, 350, and 500°C is studied. The composition and properties of thermolysis products are determined. The oxidative thermolysis yields mixtures of oxides of the central metals; the reductive thermolysis yields intermetallic compounds CoFe. The density of the complexes and the specific surface area of the intermetallic compounds are measured. Average particle sizes are calculated. The morphology and dispersion of the powders are dictated by the shape and density of the crystals of the precursor double salts and the thermolysis temperature. The thermolysis chemism in the oxidative and reductive atmospheres is discussed in the context of the nature of the complex anion.

A series of complexes [Co(NH 3 ) 6 ] x [ML 6(4) ] y , where M is Fe(III) and Fe(II), Cr(III), Cu(II); L is CN − , NCS − , 1/2C 2 O 4 2− , are synthesized. Their IR spectra and thermal decomposition in air are studied, and interplanar distances in crystalline lattices of the complexes are determined. The compounds can be used as precursors for producing homogeneous bimetallic nanodimensional powders.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.