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Full-Text Articles in Engineering

Phase Interaction Induced Texture In A Plasma Sprayed-Remelted Nicrbsi Coating During Solidification: An Electron Backscatter Diffraction Study, Liang-Yu Chen, Tianxiang Xu, Haiyang Wang, Peng Sang, Sheng Lu, Ze-Xin Wang, Shujin Chen, Lai-Chang Zhang Jan 2019

Phase Interaction Induced Texture In A Plasma Sprayed-Remelted Nicrbsi Coating During Solidification: An Electron Backscatter Diffraction Study, Liang-Yu Chen, Tianxiang Xu, Haiyang Wang, Peng Sang, Sheng Lu, Ze-Xin Wang, Shujin Chen, Lai-Chang Zhang

ECU Publications Post 2013

Although considerable endeavors have been dedicated to investigate the microstructures of the remelting-enhanced NiCrBSi coatings, the textures in the remelted coatings, which may result in property anisotropy, are rarely studied. In this work, the recrystallized fractions, grain orientations and interphase boundaries for Ni, Ni3B and CrB in a plasma sprayed-remelted NiCrBSi coating were investigated by electron backscatter diffraction. The results demonstrate that the texture is induced by phase interaction during solidification. Cooling from the liquid, the firstly formed Ni grains possess a cube fiber texture of {001}〈001〉. The successively formed Ni3B colonies are randomly oriented ...


Effect Of Direct Current Electric Field Intensity And Electrolyte Layer Thickness On Oxygen Reduction In Simulated Atmospheric Environment, Xin Zhang, Junxi Zhang, Qimeng Chen, Nianwei Dai, Qingzhao Ni, Lai-Chang Zhang, Fahe Cao, Jianqing Zhang Jan 2019

Effect Of Direct Current Electric Field Intensity And Electrolyte Layer Thickness On Oxygen Reduction In Simulated Atmospheric Environment, Xin Zhang, Junxi Zhang, Qimeng Chen, Nianwei Dai, Qingzhao Ni, Lai-Chang Zhang, Fahe Cao, Jianqing Zhang

ECU Publications Post 2013

The effect of direct current (DC) electric field and electrolyte layer thickness on oxygen reduction in simulated atmospheric environment were investigated using electrochemical measurements. The results show that the limiting diffusion current density (ilim) decreases with increasing the thin electrolyte layers (TELs) thickness but it increases with increasing the DC electric field intensity. The potential shifts negatively with the DC electric field. It is found that the DC electric field enables OH ions to quickly migrate from the solution/electrode interface to the electrolyte layer. All these features promote the cathodic reduction process thereby enhancing the metal corrosion rate.