大气环境中金属及其保护层霉菌腐蚀研究的进展

发布时间：2018-12-15 03:36

【摘要】：微生物及其生命特征严重影响着材料的服役性能与寿命.目前大量的研究集中在细菌腐蚀领域,对于大气环境中真菌造成的腐蚀行为与机理研究较少.事实上,在大气环境中存在着大量的霉菌,其生命活动对金属及涂、镀层的腐蚀也具有重要的影响.本文综述了霉菌的生化特性与腐蚀的关系,讨论了在大气环境中霉菌对金属及涂、镀层材料腐蚀行为的影响,并归纳了霉菌腐蚀的相关机理;同时根据腐蚀特征的对比分析可知,霉菌腐蚀与细菌腐蚀具有一定的差异性,其主要原因在于两类菌的代谢产物不同.目前,对金属及涂、镀层材料的霉菌腐蚀研究大多停留在对材料表面霉菌腐蚀现象的描述和产物的分析等方面,缺乏对霉菌生命活动与腐蚀速度的定量表征,缺乏对霉菌引起的腐蚀过程动力学规律的研究,这将是未来研究工作的重点.
[Abstract]:Microbes and their life characteristics seriously affect the service performance and lifetime of materials. At present, a great deal of research is focused on bacterial corrosion, but there are few researches on the corrosion behavior and mechanism caused by fungi in the atmosphere. In fact, there are a large number of molds in the atmospheric environment, and their life activities have an important effect on the corrosion of metals and coatings. In this paper, the relationship between the biochemical characteristics of mold and corrosion is reviewed, and the influence of mold on corrosion behavior of metal, coating and coating materials in atmospheric environment is discussed, and the related mechanism of mold corrosion is also summarized. At the same time, according to the comparative analysis of corrosion characteristics, there are some differences between fungal corrosion and bacterial corrosion, the main reason is that the metabolites of the two kinds of bacteria are different. At present, the research on the mould corrosion of metals and coatings and coating materials is mostly focused on the description of the mould corrosion phenomenon on the surface of the material and the analysis of the products, which lacks the quantitative characterization of the life activity and corrosion rate of the mold. The lack of research on the kinetics of mold-induced corrosion process will be the focus of future research.
【作者单位】：北京科技大学腐蚀与防护中心;
【基金】：国家自然科学基金钢铁联合基金资助项目(U1560104)
【分类号】：TG172.7

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