Establishment of the Relationship between the Microstructure Characteristics and the Heat Resistance of Silicate Coatings Obtained under SHS Conditions




Introduction:  The practical use of carbon-carbon composites (CCC) in high-temperature processes is very limited due to strong oxidation, and erosion and burn-in gas flows. In this regard, the protection of the CCC from oxidation and burnout is an important scientific and technical problem. Promising materials for the protective coating can be a refractory compound, particularly carbides, borides, nitrides and silicides, and alloys on their basis. In addition to protecting against oxidation coatings of refractory compounds have high hardness and wear resistance. As high-temperature materials the CCC have a number of unique properties: high strength at high temperatures, low specific weight, easy machining, etc. Accordingly, the CCC refers to ultra-pure materials and come in different types and brands, which is reflected in the density of materials that can vary in the range of 1.45…2.23 t/m3 , and a pronounced anisotropy of mechanical properties in dependence of the direction of the reinforcement material.

Authors: Borys Sereda, Dmytro Sereda, and Irina Sereda

Keywords: Silicate Coatings, Heat Resistance, Self Propagating High-Temperature Synthesis

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7 pages