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Thermal shock and sulfuric acid corrosion behavior of enamel–nano‐Ni composite/enamel–nano‐nickel composite coating
Author(s) -
Chen Ken,
Chen Minghui,
Yi Aihua,
Li Kang,
Zhu Wen,
Liao Zhongmiao,
Zhu Shenglong,
Wang Fuhui
Publication year - 2020
Publication title -
international journal of applied glass science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 34
eISSN - 2041-1294
pISSN - 2041-1286
DOI - 10.1111/ijag.15513
Subject(s) - materials science , enamel paint , corrosion , sulfuric acid , nanocomposite , composite number , coating , spall , thermal shock , composite material , nickel , thermal stability , nano , conversion coating , metallurgy , chemical engineering , engineering
Dense and well‐adherent enamel–nano‐Ni composite/enamel–nano‐nickel composite coatings were prepared on 304 steel. Their thermal shock (TS) resistance at 400°C as well as the chemical stability in sulfuric acid solution were investigated, and compared with pure enamel coatings. Results indicated that the nanocomposite coatings with 5 wt% of Ni particles exhibited the best resistance to TS. Almost no spalling of the coating occurs after 50 cycles of TS at 400°C. They also provided enough protective effect to the substrates from sulfuric acid corrosion. After 7 days of corrosion, the weight loss of Ni‐5 enamel coating was only 1.107 mg/cm 2 .