V. S. Patrusheva, S. V. Gavrilov, T. I. Yanson, O. V. Kulikova
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引用次数: 0
Abstract
Protective technological coatings based on refractory glass in the BaO–CaO–SiO2 system, a refractory modification filler, and a blowing additive are studied. It was found that the introduction of zirconium oxide as a modifier in an amount of no more than 10 wt % has a positive influence on the protective properties of the coating. There is no interaction between the alloy and the coating after heat treatment of the EP742 alloy coated at 1150°C for 2 h, and there is no oxidation of the alloy. Additional incorporation of graphite and silicon carbide into the coating composition decreases significantly the cooling rate of the samples. A heterogeneous large-porous structure increases the thermal insulation properties of the coating compositions. The study of lubrication properties of the coatings showed that the friction coefficient depends on not only the temperature and the degree of deformation, but also the coating composition to a significant extent. A friction coefficient decreases by 8–10 times with the use of protective coatings compared to those of uncoated EP742 alloy samples. Moreover, both silicon carbide and graphite additions are equally effective.
期刊介绍：
Polymer Science, Series D publishes useful description of engineering developments that are related to the preparation and application of glues, compounds, sealing materials, and binding agents, articles on the adhesion theory, prediction of the strength of adhesive joints, methods for the control of their properties, synthesis, and methods of structural modeling of glued joints and constructions, original articles with new scientific results, analytical reviews of the modern state in the field.
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