| 表面粗糙度对非晶态合金亚稳态小孔形核和生长的影响 |
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| 引用本文： | 左禹,符适. 表面粗糙度对非晶态合金亚稳态小孔形核和生长的影响[J]. 北京科技大学学报, 1996, 0(Z2) |
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| 作者姓名： | 左禹 符适 |
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| 作者单位： | 北京化工大学应用化学系 |
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| 摘 要： | 用恒电位和动电位极化法研究了表面粗糙度对非晶态ＮｉＣｒＦｅＳｉＢ合金亚稳态小孔形核和生长的影响，粗糙表面显著促进亚稳态小孔的形核，在恒电位下，亚稳小孔的生长电流随时间的平方线性增长为Ｉ－Ｉ０＝ｋ（ｔ－ｔ０）２．生长速度参数ｋ和亚稳态小孔的峰值电流都服从对数正态分布。在粗糙表面上亚稳态小孔的生长速度略高，且分布范围较大。
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| 关 键 词： | 孔蚀，电流波动，表面粗糙度，非晶态合金 |
Effect of Surface Roughness on Metastable Pitting of Amorphous Ni Alloy |
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| Zuo Yu,Fu Shi,. Effect of Surface Roughness on Metastable Pitting of Amorphous Ni Alloy[J]. Journal of University of Science and Technology Beijing, 1996, 0(Z2) |
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| Authors: | Zuo Yu Fu Shi |
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| Abstract: | The effect of surface roughness on nucleation and growth of metastable pitting on amorphous NiCrFeSiB alloy was studied using potentiostatic and potentiodynamic polarization tests.Nucleation of metastable pits on the alloy was significantly facilitated by rougher surface. Both the growth rate parameters and the peak currents of metastable pits follow log-normal distribution. Rougher surface also promoted the growth of metastable pits, and lead to a wider distribution of the growth rates. |
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| Keywords: | pitting current fluctuation surface roughness amorphous alloy |
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