Journal
CORROSION SCIENCE
Volume 178, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2020.109088
Keywords
AISI H13 steel; Liquid oxy-nitriding; Microstructure; Wear; Molten aluminum corrosion
Funding
- National Natural Science Foundation of China [51471112, 51611130204]
- Department of Science and Technology of Sichuan Province [2020YFG0095]
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The study found that liquid oxy-nitriding treatment significantly improved the wear resistance and molten aluminum corrosion resistance of AISI H13 steel. Particularly, the treatment at 470 degrees Celsius showed the best results, changing the corrosion mechanism and reducing the possibility of dissolution corrosion.
In this study, liquid oxy-nitriding (LON) at different temperatures (430 degrees C, 450 degrees C, 470 degrees C) was employed on the AISI H13 steel. Effects of LON on wear and molten aluminum corrosion of AISI H13 steel were investigated. LON treatments significantly improved wear resistance due to synergy between high-hardness nitriding layer and lubricating oxide film. Molten aluminum corrosion resistance was also improved, especially by LON 470 treatment. Fe3O4 film and nitriding layer on LON 470 transformed the corrosion mechanisms from dissolution into oxidation. Therefore, LON process may be a choice for combating the dissolution corrosion of liquid metals.
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