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Effect of Al on the Solid Reaction between 3CaO·Al 2 O 3 Oxide and Fe–S–O–Al Alloy at 1373 K
Author(s) -
Wang Yi,
Zhang Lifeng,
Ren Ying,
Li Zushu
Publication year - 2021
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.202100049
Subject(s) - alloy , aluminate , materials science , diffusion , phase (matter) , oxide , solid solution , sulfur , layer (electronics) , aluminium , metallurgy , aluminum oxide , chemical engineering , analytical chemistry (journal) , chemistry , thermodynamics , composite material , cement , physics , organic chemistry , chromatography , engineering
Diffusion couples of 3CaO·Al 2 O 3 and Fe–S–O–(Al) alloys are prepared to investigate the transformation of calcium aluminate reacting with solid sulfur‐containing alloys. Diffusion behaviors and solid reaction between the alloy phase and the slag phase under 1373 K are studied. Product layers of 12CaO·7Al 2 O 3 and CaS are formed at the interface. After heating for 10 h, the average thickness of CaS layer in samples with and without Al in the alloy phase is 2.10 and 0.71 μm, respectively, while it increases to 3.76 and 1.75 μm after 50 h heating. Aluminum in the alloy makes the solid reaction at the interface easier to happen, meanwhile inhibits the formation of CaS layer by promoting the formation of 12CaO·7Al 2 O 3 layer and suppresses the diffusion of sulfur.