董彬杰,董从林,白秀琴,袁成清.人工海水溶液中系泊链钢的腐蚀磨损行为[J].表面技术,2022,51(5):40-48.
DONG Bin-jie,DONG Cong-lin,BAI Xiu-qin,YUAN Cheng-qing.Corrosion and Wear Behavior of Mooring Chain Steel in Artificial Seawater Solution[J].Surface Technology,2022,51(5):40-48 |
| 人工海水溶液中系泊链钢的腐蚀磨损行为 |
| Corrosion and Wear Behavior of Mooring Chain Steel in Artificial Seawater Solution |
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| DOI：10.16490/j.cnki.issn.1001-3660.2022.05.005 |
| 中文关键词: CM490钢 腐蚀磨损 交互作用 人工海水 电偶腐蚀 损伤机理 |
| 英文关键词:CM490 steel corrosive wear interaction artificial seawater galvanic corrosion damage mechanism |
| 基金项目:工信部高技术船舶科研项目(工信部装函[2019]358号) |
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| Author | Institution |
| DONG Bin-jie | Reliability Engineering Institute, National Engineering Research Center for Water Transportation Safety, Wuhan, 430063, China;School of Marine and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, China |
| DONG Cong-lin | Reliability Engineering Institute, National Engineering Research Center for Water Transportation Safety, Wuhan, 430063, China |
| BAI Xiu-qin | Reliability Engineering Institute, National Engineering Research Center for Water Transportation Safety, Wuhan, 430063, China |
| YUAN Cheng-qing | Reliability Engineering Institute, National Engineering Research Center for Water Transportation Safety, Wuhan, 430063, China |
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| 中文摘要: |
| 目的 以CM490钢为研究对象，定量探究海洋环境下系泊链钢摩擦磨损和电化学腐蚀之间的耦合作用。方法 利用科斯特CS2350电化学工作站和Rtec摩擦磨损试验机开展CM490系泊链钢在人工海水环境下的腐蚀摩擦磨损实验。通过分析极化曲线、开路电位、摩擦因数、表面形貌及元素分布，定量分析电化学腐蚀体积损失量和摩擦磨损体积损失量，揭示腐蚀、摩擦磨损之间的交互作用机理。结果 CM490钢材料总体积损失速率随载荷增加而提高，在20、50、80 N下分别为4.2×10−2、6.5×10−2、7.9×10−2 mm3/h;开路电位峰值随着载荷增加而增高，80 N下峰值最大，增幅约为0.095 V，表明腐蚀磨损产物与基体间存在电位差，形成电偶腐蚀以致加深材料的腐蚀程度;磨痕区域腐蚀磨损损失为材料失重主体，其损失量约占总损失量的95.80%~96.82%;腐蚀和磨损的交互作用显著促进材料损失，占磨痕区总失重量的47.14%~49.37%;腐蚀对摩擦磨损损失的促进量占腐蚀磨损交互作用量的98.32%~98.65%，表明交互作用损失主要表现为腐蚀对摩擦磨损损失的促进;由于磨损过程中的位错等缺陷和电偶腐蚀，摩擦产生的影响加深了未磨损区域腐蚀程度。结论 CM490钢表面腐蚀和摩擦磨损产生的交互作用增大了磨损接触区域的材料损失速率，其中载荷对CM490钢表面产生的形变、腐蚀磨损所生成产物引起的电偶腐蚀，都对未磨损区域产生明显的腐蚀促进。为保障系铂链在海洋工程设备中的可靠性和长时间服役提供理论支撑。 |
| 英文摘要: |
| During the service processes of anchor chain steel, the friction between the chain links easily causes volume loss of the contact surface. At the same time, metal materials are often affected by corrosion and electrochemistry of ocean. There is a serious coupling effect between corrosion and wear on the anchor chain steel at the ocean environment. CM490 steel was chosen to quantitatively explore the coupling effect between friction and electrochemical corrosion of mooring chain steel in the marine environment in this paper. The CM490 anchor chain steel was made into a cylindrical specimen with a height of 4mm and a radius of 6 mm. One side of cylindrical specimen was naked, and other side was connected to a copper wire and was encapsulated with epoxy resin. Koster CS2350 electrochemical workstation and Rtec friction tester were used to carry out the corrosive wear behaviors of CM490 mooring chain steel. The dynamic corrosion wear tests were carried out using a pin-disk reciprocating motion module, with a reciprocating frequency of 0.5 Hz, a reciprocating distance of 6 mm, and a linear velocity of 6 mm/s. The normal applied loads of were set to 20 N, 50 N, and 80 N, respectively. The polarization curve, open circuit potential, coefficient of friction, surface morphology and element distribution were examined to analyze to the electrochemical corrosion volume loss and friction volume loss quantitatively, and eventually to reveal the interaction mechanism between corrosion and friction. The resulted showed that the overall volume loss rate of the CM490 material increased with the increase of the load, and were 4.2×10−2, 6.5×10−2, 7.9×10−2 mm3/h under 20, 50 and 80 N, respectively. The peak value of the open circuit potential increased with the increase of the load, and the peak value of 0.095 V was the biggest at 80 N, which indicated that there were obvious differences between the corrosion wear products and the substrate, and resulted in deepening the corrosion of the CM490 material due to the galvanic corrosion. The corrosion and wear volume loss at the wear scratch was the main volume loss, and was about 95.80%~96.82% of the total volume loss of CM490 steel. The coupling effect between the corrosion and wear significantly increased volume loss rate of materials at the friction area, and was about 47.14% to 49.37%.The promotion volume loss rate of corrosion on wear was about 98.32% to 98.65% volume loss rate to the interaction of corrosion and wear, which indicated that the interaction volume loss was mainly manifested in the promotion effect of corrosion on wear. Due to defects such as dislocations in the wear process and galvanic corrosion, the friction process deepened the corrosion of the unworn area. As a summary, the interaction effects between corrosion and friction on the surface of CM490 steel increased the volume loss rate of material at the contact wear area. Both the deformation of the CM490 steel surface caused by the high load-friction and the galvanic corrosion caused by the generated products had a significant promotion effect on the corrosion at the unworn area. This paper provides the theoretical to ensure the reliability and long-term service of the platinum chain in offshore engineering equipment. |
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