Monitoring localized corrosion of Inconel 82 weld overlay on 304L SS weld by electrochemical noise
作者: Girija SureshHemant Kumar
刊名: Materials Engineering Research, 2019, Vol.1 (2)
来源数据库: SyncSci Publishing
DOI: 10.25082/MER.2019.02.003
关键词: Inconel 82 weld overlay304L SS weldElectrochemical noiseLocalized corrosionWavelet analysis
原始语种摘要: The manuscript presents the results from the electrochemical noise (EN) monitoring of Inconel 82 weld overlay on Type 304L stainless steel (SS) weld in 0.01M FeCl3. The microstructure of the weld overlay obtained from optical and scanning electron microscopy (SEM) showed an austenite structure, containing equiaxed dendrites and secondary phases at the interdendritic region. Energy dispersive spectroscopy (EDS) attached to SEM revealed the secondary phases to be Nb rich Laves phase. The electrochemical potential noise was monitored using a three identical electrode configuration. The acquired signals were detrended, and wavelet analysis was employed to encode useful information from the noise transients. Visual examination of the potential noise-time record contained distinct high...
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  • overlay 涂层纸
  • noise 噪声
  • corrosion 腐蚀
  • localized 修]定位[域
  • wavelet 波涟
  • interdendritic 枝晶间的
  • attack 侵蚀
  • employed 就业
  • potential 
  • monitoring 监视