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Citation: Lu Er-Dong, Ji Ming-Rong, Ma Mao-Sheng, Liu Xian-Ming, Xu Peng-Shou. XPS Investigation of Anodic Passive Films on Fe₆₀Ni₄₀ Polycrystalline Alloy[J]. Acta Physico-Chimica Sinica, ;1995, 11(11): 1031-1035. doi: 10.3866/PKU.WHXB19951114 shu

XPS Investigation of Anodic Passive Films on Fe₆₀Ni₄₀ Polycrystalline Alloy

1.
National Synachrotron Radiation Lab,Structure Research Lab,University of Science and Technology of China,Hefei 230026

Received Date: 1 November 1994
Available Online: 15 November 1995

Anodic passive films formed on Fe60Ni40 in H3BO3-Na2B4O7 buffer solution (pH=9.20) and in H3PO4-Na2HPO4 buffer solution (pH=7.41) have been investigated by XPS. By analysis of the chemical states of elements, components and structure of films, we have probed into the mechanism of the formation of the anodic passive films. In the H3BO3-Na2B4O7 buffer solution (pH=9.20), the formation of passive film was controlled by adsorption of OH-, and the growth of the passive film was a function of passivation potential and time in passive range. The duplex structure, the Fe、Ni/FeOx、NiO/FeOOH、Ni(OH)2 was confirmed by detailed peak analysis and profiling. In H3PO4-NiHPO4 buffer solution(PH=7.41), the formation of passive film was controlled by competitive react, that is, cations of anodic dissolution reacted with anions such as PO43- and OH- et al in solution to form compacted deposit films of the phosphate phase.
- FeNi alloy,
- Passivation,
- Electron spectroscopy,
- Corrosion resistance
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沈阳化工大学材料科学与工程学院沈阳 110142

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XPS Investigation of Anodic Passive Films on Fe60Ni40 Polycrystalline Alloy

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通讯作者: 陈斌, bchen63@163.com

XPS Investigation of Anodic Passive Films on Fe₆₀Ni₄₀ Polycrystalline Alloy