Effect of Aspergillus niger on the corrosion of industrially pure titanium

WANG Wenxi; HOU Fuxing; WANG Jianyun; YANG Zheng; WANG Dan; CHENG Jia

doi:10.7513/j.issn.1004-7638.2025.02.007

Volume 46 Issue 2

May 2025

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WANG Wenxi, HOU Fuxing, WANG Jianyun, YANG Zheng, WANG Dan, CHENG Jia. Effect of Aspergillus niger on the corrosion of industrially pure titanium[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(2): 46-52. doi: 10.7513/j.issn.1004-7638.2025.02.007

Citation:

WANG Wenxi, HOU Fuxing, WANG Jianyun, YANG Zheng, WANG Dan, CHENG Jia. Effect of Aspergillus niger on the corrosion of industrially pure titanium[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(2): 46-52. doi: 10.7513/j.issn.1004-7638.2025.02.007

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Effect of Aspergillus niger on the corrosion of industrially pure titanium

doi: 10.7513/j.issn.1004-7638.2025.02.007

1.
School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
2.
Xi’an Pump & Valve Plant Co., Ltd., Xi’an 710025, Shaanxi, China

Received Date: 2024-10-20
Publish Date: 2025-05-06

Abstract

Abstract

The study investigated the influence of Aspergillus niger on the corrosion behavior of industrial pure titanium TA2. Surface analysis techniques, including laser confocal microscopy and scanning electron microscopy, were employed alongside electrochemical analysis methods such as electrochemical impedance spectroscopy and potentiodynamic polarization curves to examine the corrosion resistance of TA2 in the presence of Aspergillus niger biofilms. The findings revealed that the adherence and growth of Aspergillus niger on the TA2 surface modified the electrochemical properties of the titanium, with its corrosion resistance initially improving and then declining over time. The biofilm enhanced corrosion resistance within a specific timeframe, and a thicker biofilm correlated with better resistance. However, after 21 days of immersion in the Aspergillus niger solution, minor pitting was observed on the titanium surface, indicating the initiation of microbial-induced corrosion.
- commercial pure titanium,
- Aspergillus niger,
- microbiologically induced corrosion (MIC),
- biofilm,
- electrochemistry

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References(15)

References

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