【摘 要】
：
The properties of the passive film formed on 2205 stainless steel in acetic acid at high temperature that contained chloride ions were studied by atomic absorpt
【机 构】
：
Corrosion and Protection Center
论文部分内容阅读
The properties of the passive film formed on 2205 stainless steel in acetic acid at high temperature that contained chloride ions were studied by atomic absorption spectrometry (AAS), X-ray photoelectron spectroscopy (XPS), and electrochemical polariza-tion measurements.AAS results show that molybdenum is enriched on the surface as the passive film is dissolved.This enrichment decreases the corrosion resistance because it hinders chloride adsorption and Fe ion dissolution, and acts as a local pH buffer because it consumes protons.The dissolution ratio of Fe/Cr is approximately 10 during the active dissolution of the passive film.XPS results indicate that when the potential is in the passivation region, Cr comprises about 50% of the metal cations in the near-surface region of the passive film and is the main metal constituent in this region.When the polarization potential is much greater than the transpas-sivation potential, the Mo content accounts for approximately 45% of the metal cations in the near-surface region; Fe and Ni have no obvious influence on the formation, dissolution, or puncture of the passive film.
其他文献
Ti-Modified (Na0.5K0.5)(TixNb1-x)O3 (NKNT) piezoelectric ceramics were fabricated by double-layer buffed powder process at 1020℃ for 2 h. The microstructures,
The cast structure of a K465 nickel-based superalloy with different temperatures of melt superheating treatment was studied. It is shown that melt superheating
Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 was prepared by wet chemical route. The phase, surface morphology, and electrochemical properties of the prepared powders w
研究了机器带有一个不可用时间段的单机最小化加权完工时间和调度问题,并假定被中断工件是部分可续的,即其已加工部分在机器重新可用之后需进行部分重新加工.文中简单说明此
Samples of lanthanum-doped nickel hydroxide were prepared by electrodeposifion method. The structure and electrochemical properties of the samples were studied
A multi-burner-port annular flameless ceramic burner (MAFCB) of the shaftless stove for blast furnaces was designed.The characteristics of pressure drop, homoge
Highly luminescent CdSe/ZnS nanocrystals were obtained by adapting non-TOP-based synthesis and a subsequent two-phase ZnS shelling procedure: the core CdSe nano
Ce3+-doped Mn-Zn ferrite fibers were successfully prepared by the organic gel-thermal decomposition method from metal salts and citric acid. The composition, st
A series of CdxZn1-x (x = 0.1-0.9) photocatalysts were prepared by coprecipitation. They could form solid solution semiconductors with hexagonal phase in agreem
Fe3O4 magnetic nanoparticles were synthesized by the hydrothermal method, and the influences of the surfactant sodium bis(2-ethylhexyl) sulfosuecinate (AOT) on