Effect of Surface Roughness on Metastable Pitting of Amorphous Ni Alloy

Zuo Yu; Fu Shi

doi:10.13374/j.issn1001-053x.1996.s2.003

Volume 18 Issue S2

Nov. 2021

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Zuo Yu, Fu Shi. Effect of Surface Roughness on Metastable Pitting of Amorphous Ni Alloy[J]. Chinese Journal of Engineering, 1996, 18(S2): 11-15. doi: 10.13374/j.issn1001-053x.1996.s2.003

Citation:

Zuo Yu, Fu Shi. Effect of Surface Roughness on Metastable Pitting of Amorphous Ni Alloy[J]. Chinese Journal of Engineering, 1996, 18(S2): 11-15. doi: 10.13374/j.issn1001-053x.1996.s2.003

Zuo Yu, Fu Shi. Effect of Surface Roughness on Metastable Pitting of Amorphous Ni Alloy[J]. Chinese Journal of Engineering, 1996, 18(S2): 11-15. doi: 10.13374/j.issn1001-053x.1996.s2.003

Citation:

Zuo Yu, Fu Shi. Effect of Surface Roughness on Metastable Pitting of Amorphous Ni Alloy[J]. Chinese Journal of Engineering, 1996, 18(S2): 11-15. doi: 10.13374/j.issn1001-053x.1996.s2.003

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Effect of Surface Roughness on Metastable Pitting of Amorphous Ni Alloy

doi: 10.13374/j.issn1001-053x.1996.s2.003

Zuo Yu,
Fu Shi

Department of Applied Chemistry, Beijing University of Chemical Technology, Beijing PRC

Received Date: 1996-01-22
Available Online: 2021-11-13

Abstract

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.
- pitting,
- current fluctuation,
- surface roughness,
- amorphous alloy