作　　者： ; ; ; ; ;

机构地区： 广东海洋大学

出　　处： 《装备环境工程》 2007年第5期30-34,共5页

摘　　要： 在2007年3月对暴露于湛江观海长廊近8年的景观锚链进行了大气腐蚀调查和研究。现场调查结果显示,各站点锚链均受到不同程度的腐蚀,锈层呈黄褐色,站点2和站点3的锈层易剥落。锚链的扫描电镜结果表明,外表面锈层疏松多孔,并伴有大量的裂纹,内表面局部存在大量诱导腐蚀发生的微孔,表面锈层中均含有S元素和C l元素。红外光谱分析结果显示,锚链表面锈层均有α-FeOOH。大气湿热气候、高含量的C l-和H2S是锚链钢严重腐蚀及发生块状开裂的主要因素。 The corrosion of landscape anchor chain was investigated in offshore atmosphere at Zhanjiang. The results of field observation showed that the anchor chain at three sites suffered from different degrees of corrosion. The tan rust layer was easy to flake off at site 2 and site 3. The surface microstructure of landscape anchor analyzed by scanning electron microscopy （SEM） displayed that the outer rust layer of anchor chain was loose and with holes together with some cracks and a lot of micro - holes existed in the inner rust layer. The result of element distribution displayed that there was abundant in S and Cl at three sites. The analysis of the infrared spectroscopy （IR） of the rust layer confirmed the main product of the rust layer was α - FeOOH. It was concluded that the high relative humidity and the high content of C1^- and H2 S are the main causes for the serious corrosion of landscape anchor chain.

关 键 词： 锚链 锈层 扫描电镜 红外光谱 大气腐蚀

领　　域： [金属学及工艺] [金属学及工艺]