Hot corrosion behaviour of Nbss/Nb5Si3 in situ composites in the mixture of Na2SO4 and NaCl melts
Hot corrosion behaviour of Nbss/Nb5Si3 in situ composites in the mixture of Na2SO4 and NaCl melts
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DOI：
10.1016/j.corsci.2013.04.057
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发表时间：
2013-09
影响因子：
8.3
通讯作者：
Wan Wang;Chungen Zhou
中科院分区：
文献类型：
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作者：
Wan Wang;Chungen Zhou
Hot corrosion behaviour of Nb–16Si–24Ti–6Cr–6Al–2Hf (at.%) in the mixture of Na2SO4and NaCl melts at 900°C was studied. The results show that the corrosion kinetics of the alloy fit parabolic law. The oxides consist of a loose and porous outer layer and an internal oxidation zone. Outer oxides are mainly composed of TiO2, TiNb2O7, Nb2O5, CrNbO4and SiO2while the internal oxidation zone is composed of TiO2. Hot corrosion mechanism of the alloy in the presence of Na2SO4and NaCl deposits is discussed.
