PHYSICO-MECHANICAL PROPERTIES OF CERAMIC MATERIALS AND COATINGS OBTAINED BY PLASMA SPRAYING: QUALITY MANAGEMENT ASPECTS

Abstract

The study aimed to develop high-quality ceramic material powders based on Аl2О3·Сr2О3 and to determine their physico-mechanical properties, as well as the properties of coatings obtained from these powders through plasma spraying. The physico-mechanical properties of the powders were assessed using standard methodologies, including particle shape and size, granulometric distribution, density, flexural strength, elastic modulus, and the coefficient of linear thermal expansion. The study led to the development of high-quality, high-temperature protective materials of the Аl2О3·Сr2О3 and CAS (cobalt alloy + spinel) types, and samples of coatings from these materials were manufactured. New high-quality thermal protection composite materials were developed for the coating of combustion chambers in gas turbine engines, and their physico-mechanical properties were determined. The newly developed high-quality thermal protection composite materials have been used to form shell components through plasma spraying to produce combustion liners for gas turbine engines. These components are undergoing industrial testing at Motor Sich JSC as part of implementing a quality management system.