The article presents the results of a study on the exploitation properties of flame-sprayed ceramic coatings produced from an oxide ceramic material in the form of powder based on an aluminum oxide (Al2O3) matrix with an addition of 3 % titanium oxide (TiO2) and also on a zirconium oxide (ZrO2) matrix with 30 % of calcium oxide (CaO) on a substrate of unalloyed structural steel of grade S235JR. The buffer layer was produced from a metallic powder on the basis of Ni-Al-Mo. Plates with dimensions of (5 200 300) mm and also the front surfaces of f40 50 mm cylinders were flame-sprayed. The buffer coatings were produced using a RotoTec 80 torch and external specific coatings were produced with a CastoDyn DS 8000 torch. Investigations of the coating properties were based on metallography tests, a phase-composition research, a measurement of microhardness, a research of the coating adhesion to the substrate, the abrasive-wear resistance (acc. to ASTM G65 standard), the erosion-wear resistance (acc. to ASTM G76-95 standard) and a thermal-stroke study. The coatings were characterized by a high adhesion to the substrate and also high erosion and abrasive-wear resistance and the resistance to cyclic thermal strokes.
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Artur Czupryński (2017) studied this question.
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