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Effect of doping graphene oxide on the structure and properties of SiO 2 based high emissivity coatings
Author(s) -
Song Guangping,
He Shifeng,
He Fei,
Yao Yongtao,
Li Jianjun,
Li Mingwei,
He Xiaodong
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.48794
Subject(s) - emissivity , materials science , graphene , low emissivity , coating , oxide , doping , substrate (aquarium) , composite material , deposition (geology) , nanotechnology , optics , optoelectronics , metallurgy , paleontology , oceanography , sediment , geology , biology , physics
High emissivity coatings have received a great attention due to their energy saving capability for using in spacecraft and industrial furnaces applications. In this study, a feasible spray deposition method was employed to prepare a high emissivity coating on Kovar alloy substrate with porous structure after heat treatment. Graphene oxide was used to dope coating to improve its emissivity. The emissivity enhancement mechanisms of the graphene oxide doped SiO 2 coatings have been investigated. Results show that coating emissivity can be significantly improved (6.41 and 9.64% of coating emissivity at 500 and 800°C, respectively) by doping graphene oxide. Thus, this study proposed a feasible and effective method to prepare high emissivity coatings. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48794.