低熔点玻璃粉对水冷壁涂层组织和性能的影响

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Abstract In this paper, different contents of low melting point glass powder were added to the FeCrNiAl coating to prepare the coating wire. The coating was prepared on Q235 steel substrate by supersonic arc spraying technology. The microstructure, porosity and microhardness of the coating were analyzed by SEM, EDS, XRD, PS and microhardness tester. The friction and wear resistance, bending resistance, thermal shock, high temperature molten salt corrosion and electrical conductivity of the coating were analyzed. The results of chemical corrosion experiments show that a certain amount of low melting point glass powder can reduce the unmelted particles and pores in FeCrNiAl coating, the microstructure of the coating is compact, the crystalline phase has good ductility, and the friction and wear properties, thermal shock resistance and corrosion resis-tance are significantly improved. Among them, the FeCrNiAl coating with 10% low melting point glass powder has the best microstructure and properties.

Key words： coating porosity friction and wear electrochemical corrosion

Published: 16 July 2021

CLC number:

TG174.4

About author:: Xuefei Hu,engineer, graduated from Hefei University of Technology in 2007 with a bachelor's degree in metal materials engineering. In 2016, he graduated with a master's degree in materials engineering from Hefei University of Technology. He holds the qualification certificates of boiler inspector, pressure vessel Inspector, pressure pipe inspector, UT Ⅱ, MT Ⅱ, RT Ⅱ, Pt Ⅱ, power PA Ⅱ, etc., and has long been engaged in boiler manufacturing, installation, regular supervision and inspection and metal supervision in charge of the inspection work, parti-cipated in more than 100 sets of projects, and participated in the compilation of local standards and the work of science and technology projects for many times.

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Cite this article:

HU Xuefei. Effect of Low Melting Point Glass Powder on Microstructure and Properties of Water Wall Coating[J]. Materials Reports, 2021, 35(Z1): 189-194.

URL:

http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2021/V35/IZ1/189

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