<strong>D-</strong>酪氨酸增强<strong>AH36</strong>船体钢四羟甲基硫酸磷杀菌腐蚀防护效用研究

doi:10.11902/1005.4537.2025.253

中国腐蚀与防护学报

2026, Vol. 46

Issue (4): 1238-1248 CSTR: 32134.14.1005.4537.2025.253 DOI: 10.11902/1005.4537.2025.253

研究报告

本期目录 | 过刊浏览

D-酪氨酸增强AH36船体钢四羟甲基硫酸磷杀菌腐蚀防护效用研究

林莉¹, 毕诗浩², 付磊²^,³(

), 蹇科², 张千²

^1.四川轻化工大学材料科学与工程学院自贡 643000
^2.四川轻化工大学机械工程学院宜宾 644000
^3.四川大学灾变力学与工程防灾四川省重点实验室成都 610065

Bactericidal and Biocorrosion Protection Performance of D-tyrosine Enhanced Tetrahydroxymethyl Phosphonium Sulfate for AH36 Shipbuilding Steel

LIN Li¹, BI Shihao², FU Lei²^,³(

), JIAN Ke², ZHANG Qian²

^1.Sichuan University of Science and Engineering, School of Materials Science and Engineering, Zigong 643000, China
^2.Sichuan University of Science and Engineering, School of Mechanical Engineering, Yibin 644000, China
^3.Failure Mechanics and Engineering Disaster Prevention Key Laboratory of Sichuan Province, Sichuan University, Chengdu 610065, China

引用本文:

林莉, 毕诗浩, 付磊, 蹇科, 张千. D-酪氨酸增强AH36船体钢四羟甲基硫酸磷杀菌腐蚀防护效用研究[J]. 中国腐蚀与防护学报, 2026, 46(4): 1238-1248.
Li LIN, Shihao BI, Lei FU, Ke JIAN, Qian ZHANG. Bactericidal and Biocorrosion Protection Performance of D-tyrosine Enhanced Tetrahydroxymethyl Phosphonium Sulfate for AH36 Shipbuilding Steel[J]. Journal of Chinese Society for Corrosion and protection, 2026, 46(4): 1238-1248.

全文: PDF(16396 KB) HTML

摘要:

AH36船体钢结构表面的海洋微生物腐蚀对船舶安全运行影响较大，做好钢材表面的微生物腐蚀防护十分重要。基于此，本文采用腐蚀失重、微观分析以及电化学监测等方法研究了海洋主要腐蚀性微生物硫酸盐还原菌(SRB)对AH36船体钢的腐蚀行为，并评估D-酪氨酸(D-tyrosine)作为杀菌增效剂对四羟甲基硫酸磷(THPS)杀菌防腐性能的提升效果。结果表明，单独投放40 mg/L THPS对SRB的活性和代谢的抑制效果欠佳，100 mg/L THPS体系抑制作用较好，40 mg/L THPS + 1 mg/L D-tyrosine复配体系抑制效果最佳；其中复配体系试样相对SRB体系的缓蚀率达到75.68%，基体腐蚀缺陷最为轻微，腐蚀产物中的S元素含量最低、未检测到FeS生成。3种杀菌体系中试样低频阻抗模值及极化电阻均高于SRB体系，其中复配体系腐蚀电流密度最低，相对SRB体系的腐蚀抑制效率达到了87.97%。

关键词 ： AH36船体钢, D-tyrosine, 四羟甲基硫酸磷, 电化学测试, 腐蚀抑制

Abstract：

Marine microbial corrosion on AH36 shipbuilding steel surface has significant impact on the safe operation of ships, making the prevention of such corrosion particularly important. In this study, the corrosion behavior of AH36 shipbuilding steel induced by sulfate-reducing bacteria (SRB), a major marine corrosive microorganism was investigated in SRB containing solution by means of corrosion weight-loss measurements, microstructural analysis, and electrochemical monitoring. Then the biocidal and anticorrosion performance of different dosage of the D-tyrosine enhanced tetrakis (hydroxymethyl)phosphonium sulfate (THPS) was also evaluated for the AH36 shipbuilding steel in SRB containing solution. Results indicate that a dosage of 40 mg/L THPS alone exhibited limited inhibition for SRB activity and metabolism, while 100 mg/L THPS demonstrated better inhibitory performance. The combination of 40 mg/L THPS with 1 mg/L D-tyrosine exhibited the most effective inhibition effect, achieving a corrosion inhibition efficiency of 75.68% relative to the bare SRB containing solution, with features of the mildest corrosion defects on the substrate, the lowest sulfur content in corrosion products, and no detectable FeS formation. Electrochemical tests further revealed that the low-frequency impedance modulus and polarization resistance of all three bactericidal containing solutions with SRB, i.e. 40 mg/L THPS, 100 mg/L THPS and 40 mg/L THPS + 1 mg/L D -tyrosine were higher than those observed in the bare SRB solution without addition of bactericidal. Among them, the addition of the combination 40 mg/L THPS + 1 mg/L D -tyrosine exhibited the lowest corrosion current density, corresponding to a corrosion inhibition efficiency of 87.97% relative to the bare SRB solution.

Key words： AH36 shipbuilding steel D-tyrosine THPS electrochemical testing corrosion inhibition

收稿日期: 2025-08-07 32134.14.1005.4537.2025.253

ZTFLH:

TB304

基金资助:灾变力学与工程防灾减灾四川省重点实验室(四川大学)开放课题基金(FMEDP202109);四川省区域创新合作项目(2024YFHZ0073);四川大学-自贡市校地合作专项资金(2024CDZG-1);四川轻化工大学科研创新团队计划(SUSE652A015)

通讯作者: 付磊，E-mail：kunmingfulei@126.com，研究方向为新型材料力学性能、结构及材料疲劳断裂损伤

Corresponding author: FU Lei, E-mail: kunmingfulei@126.com

作者简介: 林莉，女，1979年生，博士，讲师

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https://www.jcscp.org/CN/10.11902/1005.4537.2025.253 或 https://www.jcscp.org/CN/Y2026/V46/I4/1238

图1 不同体系SRB菌液生长过程变化

图2 不同体系中SRB生长曲线

图3 不同体系的SO42-质量浓度变化

图4 不同体系的pH值变化

图5 AH36船体钢在不同体系中的腐蚀失重速率

图6 不同体系下基体表面腐蚀产物形貌

图7 不同体系下腐蚀产物的XRD图谱

图8 不同体系下AH36船体钢表面腐蚀形貌

图9 AH36船体钢在3种杀菌体系下的EIS谱

图10 AH36船体钢在无菌和SRB体系下的EIS谱

图11 拟合电化学阻抗谱的等效电路模型

表1 等效电路元件拟合参数

图12 AH36船体钢在5种体系的极化曲线

表2 极化曲线拟合参数结果

图13 杀菌对AH36船体钢的缓蚀机理示意图

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