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A study of nitrogen solubility in Na 2 O‐B 2 O 3 slag
Author(s) -
Kong SangJin,
Hwang HoYong,
Lee HaeGeon
Publication year - 2000
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.200005718
Subject(s) - solubility , slag (welding) , dissolution , nitrogen , chemistry , partial pressure , oxygen , nitride , inorganic chemistry , analytical chemistry (journal) , ion , atmospheric temperature range , nuclear chemistry , materials science , metallurgy , layer (electronics) , thermodynamics , environmental chemistry , physics , organic chemistry
The nitrogen solubility and nitride capacity of a Na 2 O‐B 2 O 3 slag system were investigated in a concentration range of Na 2 O mass contents up to 40 % at 1373K. The solubility of nitrogen in Na 2 O‐B 2 O 3 slag was found to be proportional to the oxygen partial pressure to the power of −3/4, and it was also found to increase with increasing reaction temperature. The nitride capacity of the slag decreased with increasing Na 2 O content. From the experimental results it was concluded that nitrogen dissolution into Na 2 O‐B 2 O 3 slags (Na 2 O mass contents < 40 %) occurs by its reaction with both free oxygen ions and with oxygen ions incorporated with the network.