黑曲霉菌对工业纯钛的腐蚀影响研究

王文溪; 侯福星; 王剑云; 杨政; 王丹; 程佳

doi:10.7513/j.issn.1004-7638.2025.02.007

黑曲霉菌对工业纯钛的腐蚀影响研究

doi: 10.7513/j.issn.1004-7638.2025.02.007

王文溪^1,,
侯福星¹,
王剑云^1, ,,
杨政¹,
王丹²,
程佳²

1.
西安交通大学人居环境与建筑工程学院, 陕西西安710049
2.
西安泵阀总厂有限公司, 陕西西安710025

详细信息

作者简介:
王文溪，1999年出生，女，云南昆明人，硕士生，主要从事微生物腐蚀的研究，E-mail：wx17772480230@163.com

通讯作者:
王剑云，1983年出生，女，江苏南通人，教授，主要从事自修复材料和微生物腐蚀研究，E-mail: jianyun.wang@xjtu.edu.cn

中图分类号: TF823,TG174.4
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- 文章访问数: 55
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- 被引次数: 0
出版历程
- 收稿日期: 2024-10-20
- 刊出日期: 2025-05-06

Effect of Aspergillus niger on the corrosion of industrially pure titanium

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

摘要

摘要: 选取黑曲霉菌为典型微生物，研究其对工业纯钛TA2腐蚀行为的影响，采用表面分析技术（激光共聚焦显微镜及扫描电子显微镜），结合电化学分析方法（电化学阻抗谱和动电位极化曲线），研究了工业纯钛TA2在黑曲霉菌富集环境下的耐腐蚀特性。研究发现黑曲霉菌在TA2表面的附着生长改变了钛片的电化学特征，其耐腐蚀性随浸泡时间的增加先增强后减弱，生物膜在一定时间周期内可提高耐蚀性能。生物膜越厚，其耐腐蚀性能越好。尽管如此，在黑曲霉菌液浸泡21 d后，钛片表面仍观察到极少量的点蚀坑，预示出现了霉菌腐蚀。
- 工业纯钛 /
- 黑曲霉菌 /
- 微生物腐蚀 /
- 生物膜 /
- 电化学
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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图 1 黒曲霉菌在PDA中的生长情况

(a) 1 d; (b) 4 d; (c) 7 d; (d) 10 d

Figure 1. The growth of Aspergillus niger in PDA

下载: 全尺寸图片幻灯片

图 2 黒曲霉菌生长4 d后钛片边缘附着的黑曲霉菌丝

(a)(c)钛片不同边缘区域；(b)(d)分别是(a)(c)的放大形貌

Figure 2. Aspergillus niger filaments attached to the edge of titanium sheet 4 days after the growth of Aspergillus niger

下载: 全尺寸图片幻灯片

图 3 黑曲霉菌生长过程中培养基pH值的变化

Figure 3. Change of pH value in the medium during the growth of Aspergillus niger

下载: 全尺寸图片幻灯片

图 4 不同浸泡时间钛材表面生物膜厚度

Figure 4. Titanium surface biofilm thickness of different soaking time

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图 5 在黑曲霉菌液中浸泡不同时间后钛片表面的微生物膜

Figure 5. Microbial membrane on the surface of titanium sheet after soaking in Aspergillus niger solution for different time

(a) 7 d; (b) 14 d; (c) 21 d

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图 6 TA2钛片的Nyquist图（a）和Bode图（b）

Figure 6. Nyquist(a) and Bode(b) plots of TA2 titanium sheets

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图 7 模拟EIS图的等效电路图模型

(a)不含黑曲霉菌；(b)含黑曲霉菌

Figure 7. Equivalent circuit diagram model simulating EIS diagram

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图 8 浸泡于PDB培养基和黑曲霉菌液中钛片的动电位极化曲线

Figure 8. Potentiodynamic polarization curves of titanium sheets immersed in PDB medium and Aspergillus niger solution

(a) 7 d；(b) 14 d；(c) 21 d

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图 9 钛片在黑曲霉菌液中浸泡21 d样品表面的腐蚀形貌

(a)钛片初始形貌；(b)在黑曲霉菌液中浸泡21 d后的钛片形貌；(c)21 d后在样品表面观察到的点蚀

Figure 9. Corrosion morphology of titanium sheet on the surface of the sample containing Aspergillus niger for 21 days

下载: 全尺寸图片幻灯片

表 1 拟合参数

Table 1. Fitting parameter table

TA2	t/d	$ R_{\mathrm{S}} $/(Ω·cm²)	${Q_1}$×10⁵/(Ω⁻¹·Sⁿ·cm⁻²)	${n_1}$	${R_c}$/(Ω·cm²)	${Q_2}$×10⁵/(Ω⁻¹·Sⁿ·cm⁻²)	${n_2}$	$ R_{\mathrm{ct}} $/(kΩ·cm²)
不含菌(Sterile)	7	65.68	3.36	0.92				265300
	14	34.98	2.63	0.93				326000
	21	64.04	3.68	0.90				223900
A.niger	7	30.13	2.08	0.98	22.23	2.99	0.92	572370
	14	25.07	3.07	0.93	78.17	0.3984	0.99	886780
	21	27.70	2.86	0.93	58.6	0.602	0.98	579350

下载: 导出CSV

表 2 浸泡于PDB培养基和黑曲霉菌液中的钛片的动电位极化拟合数据

Table 2. Potentiodynamic polarization fitting data of titanium sheets immersed in PDB medium and Aspergillus niger solution

	时间/d	i_corr×10⁸/(A·cm⁻²)	E_corr/V	\|β_a\|/(mV·deg⁻¹)	\|β_c\|/(mV·deg⁻¹)
Aspergillus niger	7	1.27	−0.120	237.91	126.66
	14	1.93	−0.075	78.81	124.88
	21	1.16	−0.162	147.36	126.66
PDB培养基	7	1.30	−0.171	78.75	79.90
	14	2.09	−0.117	113.83	131.39
	21	2.23	−0.138	117.12	124.80

下载: 导出CSV

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