TY - GEN

T1 - Hydrogen Absorption of Aluminum-Magnesium Melts from Humid Atmospheres

AU - Tichy, Stefan

AU - Pucher, Philip

AU - Prillhofer, Bernd

AU - Wibner, Stefan

AU - Antrekowitsch, Helmut

PY - 2023/2/8

Y1 - 2023/2/8

N2 - In casthouses, water vapor has long been considered a source of high hydrogen contents in aluminum melts. Moisture levels are usually highest in melting and holding furnaces, where H2O contents of up to 18 vol% occur due to the combustion of natural gas with air. In the case of oxyfuel burners, contents of even more than 60 vol% are theoretically possible. To avoid defects such as annealing bubbles or grain porosity in the subsequent production steps, the absorbed hydrogen must be reduced to a minimum by degassing treatments. To gain a better understanding of the interaction between liquid aluminum and water vapor, the hydrogen absorption of aluminum-magnesium melts under atmospheres with varying water vapor contents of 0–90 vol% at around 700 °C (1300 °F) is investigated in this work. Furthermore, the influence of H2O on the oxidation behavior is also examined.

AB - In casthouses, water vapor has long been considered a source of high hydrogen contents in aluminum melts. Moisture levels are usually highest in melting and holding furnaces, where H2O contents of up to 18 vol% occur due to the combustion of natural gas with air. In the case of oxyfuel burners, contents of even more than 60 vol% are theoretically possible. To avoid defects such as annealing bubbles or grain porosity in the subsequent production steps, the absorbed hydrogen must be reduced to a minimum by degassing treatments. To gain a better understanding of the interaction between liquid aluminum and water vapor, the hydrogen absorption of aluminum-magnesium melts under atmospheres with varying water vapor contents of 0–90 vol% at around 700 °C (1300 °F) is investigated in this work. Furthermore, the influence of H2O on the oxidation behavior is also examined.

KW - Aluminum

KW - Hydrogen

KW - Water vapor

KW - Hycal

KW - Oxidation

UR - https://link.springer.com/chapter/10.1007/978-3-031-22532-1_122

M3 - Conference contribution

SN - 978-3-031-22531-4

SN - 978-3-031-22534-5

SP - 920

EP - 927

BT - Light Metals 2023

ER -