10CrNi3MoV钢在西太平洋深海环境下的腐蚀行为研究  

Corrosion Behavior of 10CrNi3MoV Steel in Deep-sea Environment of Western Pacific

作　　者：张彭辉[1] 李显超[1] 仝宏涛 张宇 陈诚 ZHANG Penghui;LI Xianchao;TONG Hongtao;ZHANG Yu;CHEN Cheng(State Key Laboratory for Marine Corrosion and Protection,Luoyang Ship Material Research Institute,Qingdao 266101,China;Unit 92118,People's Liberation Army,Zhoushan 316000,China)

机构地区：[1]中国船舶重工集团公司第七二五研究所海洋腐蚀与防护重点实验室,青岛266101 [2]中国人民解放军92118部队,舟山316000

出　　处：《中国腐蚀与防护学报》2022年第6期1075-1080,共6页Journal of Chinese Society For Corrosion and Protection

摘　　要：以10CrNi3MoV钢为研究对象,在西太平洋海域不同深度下进行实海腐蚀试验,通过形貌观察、腐蚀失重计算、点蚀测量以及产物成分分析等方法对其腐蚀行为进行了研究。结果表明,10CrNi3MoV钢在西太平洋深海环境下的腐蚀形貌主要为点蚀,随深度增加表面点蚀密度和点蚀深度均增大;腐蚀速率随深度的增加先减小后略有增加,与深海溶解氧含量随深度变化规律一致。由于合金元素的添加导致深海环境局部腐蚀敏感性增大,相同条件下10CrNi3MoV钢耐蚀性劣于普通碳钢。10CrNi3MoV钢形成的晶态腐蚀产物主要为γ-FeOOH;随海水深度增加,晶态腐蚀产物相逐渐减少。The corrosion behavior of 10CrNi3MoV steel was investigated, by means of morphologies observation, mass-loss calculation, pitting depth measurement and products composition analysis, after field exposure tests in different depths in western Pacific deep-sea environment. The main corrosion morphology of 10CrNi3MoV steel was pitting, and the growths of pitting density and pitting depth were observed as the test depth increased. The corrosion rate firstly decreased, and then slightly increased, in accordance with the variation of the dissolved oxygen concentration with depths. Due to the addition of alloying elements, the corrosion resistance of 10CrNi3MoV steel was inferior to that of ordinary carbon steel. γ-FeOOH was the main component in corrosion products, however, of which the amount of crystalline ones reduced with the increasing test depth.

关 键 词：10CRNI3MOV钢 西太平洋 海水腐蚀 深海 

分 类 号：TG172.5[金属学及工艺—金属表面处理]