The effect of SiC coatings microstructure on their infrared emissivity

Liu, Jia‐Bao; Chen, Zhaofeng; Yang, Lixia; Chai, Pan; Wan, Qiang

doi:10.1080/21870764.2022.2159952

Cited by 7 publications

(1 citation statement)

References 18 publications

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“…Керамические композиционные материалы в течение последнего десятилетия активно используют для защиты от истирания и температурной коррозии. Появилось также немало исследований [1][2][3][4][5][6], посвященных изучению Процесс термической обработки является одним из наиболее часто встречающихся технологических операций во всех отраслях промышленности. Передача тепловой энергии в печи происходит за счет конвекционного и радиационного механизмов, однако радиационный теплообмен становится доминирующим с повышением температуры [7].…”

Section: Introductionunclassified

Preparation of coatings with high infrared emissivity

Sirota,

Zaitsev,

Limarenko

et al. 2024

Metal Working and Material Science

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Introduction. One of the promising modern methods of coating formation is detonation gas dynamic sputtering. Coatings obtained by this method have high adhesion to the substrate, dense structure and specified functional properties. Development of technology for obtaining functional coatings with high emission coefficient in the infrared range is an urgent need for the development of high-temperature industrial processes and technologies. High-temperature industrial processes consume a large amount of energy, so improving the energy efficiency of industrial equipment is considered as one of the ways to overcome the ever-growing energy crisis. To this end, coatings with high infrared emissivity have been developed for industrial furnaces. These coatings are usually applied to the furnace walls, which significantly improves energy efficiency by increasing heat transfer from the heat-emitting surfaces of the furnace. The purpose of the work is to obtain coatings with high emission indices in the infrared range for further recommendation of its use in baking ovens of Shebekinsky machine-building plant. Methods for studying coating specimens obtained by detonation gas-thermal method: scanning electron microscopy, X-ray phase analysis, energy dispersive analysis, infrared spectroscopy. Results and discussion. The microstructure, phase composition, emissivity and thermal cycling resistance of Fe2O3; Al2O3 + 10 % Fe2O3; Ti + 10% Fe2O3 coatings obtained by detonation gas-dynamic powder spraying are investigated in this work. The results of the study showed that the obtained coatings have a dense structure, increased emissivity and resistance to thermal treatment cycles, as a result of which the structure of the crystal lattice of the coatings does not change.

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Section: Introductionunclassified