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Corrosion of hot‐dip‐galvanised steel and zinc alloy‐coated steel in ammonia and ammonium chloride
Author(s) -
Thierry Dominique,
Le Bozec Nathalie,
Persson Dan
Publication year - 2020
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201911402
Subject(s) - galvanization , zinc , corrosion , ammonia , ammonium chloride , aluminium , chloride , relative humidity , metallurgy , ammonium , moisture , materials science , alloy , chemistry , composite material , layer (electronics) , organic chemistry , physics , thermodynamics
There are many potential causes of corrosion in animal buildings. Animals exhale large quantities of moisture into the air creating high relative humidity in the building if the moisture is not properly vented. High humidity increases the potential for condensation. In addition, ammonia may be found in large quantities in animal buildings. Ammonia is released from manure and urine. In addition, ammonium chloride is used as a nitrogen source in fertilisers. In this study, the atmospheric corrosion of hot‐dip‐galvanised steel and zinc alloy‐coated steel such as zinc–aluminium and zinc–aluminium–magnesium has been studied in atmospheres containing different levels of ammonia. Investigations have also been conducted at different levels of ammonium chloride. The results are discussed in view of the mechanisms of corrosion of zinc and zinc alloy‐coated steel in ammonia and ammonium chloride‐containing environments.