Corrosion mechanism of a NiCoCrAlTaY coated Mar-M247 superalloy in molten salt vapour
Corrosion mechanism of a NiCoCrAlTaY coated Mar-M247 superalloy in molten salt vapour
复制标题
NiCoCrAlTaY涂层Mar-M247高温合金在熔盐蒸气中的腐蚀机制
DOI:
10.1016/j.corsci.2011.10.021
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发表时间:
2012-02
影响因子:
8.3
通讯作者:
Zhang L.
中科院分区:
文献类型:
--
作者:
Mei H.;Liu Y.;Cheng L.;Zhang L.
A mechanism of corrosion is proposed relating to a NiCoCrAlTaY coated Mar-M247 superalloy exposure in molten Na2SO4salt vapour at 900°C. The corrosion process indicates the parabolic “diffusion controlled” region I at rate of 4.6×10−6mg2cm−4s−1, the combination of parabolic and linear “reaction–diffusion controlled” region II at rate of 2.28×10−5mg2cm−4s−1and 4.35×10−5mgcm−2s−1, and finally the complete “reaction controlled” region III at the same rate of 3.92×10−4mgcm−2s−1as the uncoated superalloy. The corrosion kinetics of each region and of the whole process are formulated rationally associated with the corrosion mechanism.
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影响因子:
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作者:
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影响因子:
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作者:
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影响因子:
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通讯作者:
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