泥滩环境中硫酸盐还原原核生物对 AZ31B 镁合金的腐蚀

为了研究海洋工程中埋设管道的镁阳极在独特的泥滩环境中的异常失效问题，一种硫酸盐还原原生菌（SRP）菌株在泥滩中进行了研究。为了研究在泥滩的独特环境中海洋工程中埋设管道的镁阳极的异常失效，从铺设管道的土壤中分离出一株硫酸盐还原原核生物（SRP）HQM3 。采用失重试验、电化学测量、扫描电镜、EDS、XRD 和 CLSM 技术研究了腐蚀对 AZ31 陶瓷的影响。腐蚀对 AZ31B 镁合金的影响。在 SRP 的影响下，镁合金在泥滩环境中的腐蚀速度高达 1.31 毫米/年。SRP加速了 0.3 毫米/年。在非生物和生物系统中，样品上都出现了点蚀。14 天后，生物系统中的点蚀深度达到 163.47 μm。花瓣状腐蚀产物的主要成分为 Mg(OH)2。结果表明，泥滩环境可导致镁合金加速腐蚀。镁合金的腐蚀。

To investigate the abnormal failure of magnesium anodes for buried pipelines in marine engineering under the unique mudflat environment, a sulfate-reducing prokaryote (SRP) strain HQM3 was isolated from the soil near the laid pipelines. Various characterization techniques including weight loss test, electrochemical measurement, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and confocal laser scanning microscopy (CLSM) were adopted to study the corrosion behavior of AZ31B magnesium alloy. Under the action of SRP, the corrosion rate of magnesium alloy in the mudflat environment reached up to 1.31 mm/year, and SRP accelerated the corrosion by 0.3 mm/year compared with the abiotic control group. Pitting corrosion was detected on the specimens in both abiotic and biotic systems. After 14 days of incubation, the pitting depth in the biotic system reached 163.47 μm. The main component of the petal-like corrosion products was Mg(OH)₂. The results indicate that the mudflat environment can significantly accelerate the corrosion of magnesium alloys.

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该数据集聚焦于泥滩环境中硫酸盐还原原核生物对AZ31B镁合金的腐蚀影响研究，旨在探究海洋工程中镁阳极的异常失效问题。通过实验分析发现，SRP显著加速了镁合金的腐蚀，腐蚀速度达1.31毫米/年，并导致点蚀深度增加，腐蚀产物以Mg(OH)2为主，数据来源于青岛地区，时间跨度为2019年9月至2022年6月。