LATE INTRA-MOULD GRAPHITIZING MODIFYING IS EFFECTIVE WAY OF PREVENTION OF CHILLING EFFECT IN IRON CASTING

The efficiency of the method of late intra-form graphitizing modifying of composition of modifiers Superseed 75, SB5 and фс65р3М1 as compared to ladle modification for disposal of such foundry defect as corner chill is shown

THE MODERN APPROACH TO THE QUALITY INCREASE OF CASTING BLOCKS AND HIGH-PERFORMANCE COMPOUNDS FOR PROCESSING OF MELTS ON THE BASIS OF ALUMINUIM

In the article there is given the group of measures, aimed at increase of quality of cast ingots and of high-performance compounds for processing of melts on the basis of aluminium

ON MECHANISM OF FORMING OF STRUCTURAL CONSTITUENTS AT CRYSTALLIZATION OF MODIFIED EUTECTIC IN SILUMINS .

The mechanism of silumins structure formation on the basis of data of thermal, metallographic, microentgenospectral analysis is discussed.The theoretical conclusion is that crucial role in structure formation of eutectic belongs to Si-phase

Influences of Co-Content on the Physico-Chemical and Catalytic Properties of Perovskite GdCo_xFe_1−xO₃ in CO Hydrogenation

The effect of the substitution of cobalt into the GdFeO3 perovskite structure on the selective hydrogenation of CO was investigated. A series of GdCoxFe1−xO3 (x = 0; 0.2; 0.5; 0.8; 1) samples were synthesized by sol-gel technology and characterized by XRD, BET specific area, DSC, TG, EDX and XPS. The experimental data made it possible to reveal a correlation between the state of iron and cobalt atoms, the fractions of surface and lattice oxygen, and catalytic characteristics. It has been found that varying the composition of GdCoxFe1−xO3 complex oxides leads to a change in the oxygen-metal binding energy in Gd-O-Me, the ratio of metals in various oxidation states, and the amount of surface and lattice oxygen, which affects the adsorption and catalytic characteristics of complex oxides

EFFECTIVE WAYS OF THE REFINING-MODIFYING PROCESSING OF HYPEREUTECTIC SILUMINS

New effective preparation for modifying of hypereutectic silumins AK18 — piston alloy is created on the basis of research-experimental-industrial works