金属橡胶在不同表面处理工艺下的腐蚀行为及静载压缩蠕变性能  

Corrosion Behavior and Static Load Compression Creep Performance of Metal Rubber under Different Surface Treatment Processes

作　　者：赖福强 胡安琼 郝翔飞 白鸿柏 任志英[1] 吴乙万[1] LAI Fuqiang;HU Anqiong;HAO Xiangfei;BAI Hongbai;REN Zhiying;WU Yiwan(School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou 350116,China)

机构地区：[1]福州大学机械工程及自动化学院,福州350116

出　　处：《中国表面工程》2025年第1期141-151,共11页China Surface Engineering

基　　金：国家自然科学基金(52205185,52175162)。

摘　　要：金属橡胶(MR)是一种纯金属的多孔减振/隔振材料,可作为极端环境下传统高分子减振/隔振材料的绝佳代替者。然而,目前关于其在海洋环境中的腐蚀行为及静载压缩蠕变性能研究还较少,影响了金属橡胶的进一步工程应用推广。采用表面硅烷化(S)、化学酸洗(P)和化学酸洗-表面硅烷化(P-S)工艺对制备好的MR试样进行表面处理,得到三种不同表面性能的MR试样。在5wt.%NaCl溶液中进行间浸腐蚀方式的静载压缩蠕变试验,并利用SEM、EDS和电化学工作站等表征手段研究MR的微观形貌、腐蚀产物元素组成、耐腐蚀和抗蠕变性能。结果表明:间浸腐蚀蠕变试验后,三种试样的腐蚀产物元素以O、Fe和Cr为主。P-S-MR试样的腐蚀电位(E_(corr))相对较大,腐蚀电流密度(i_(corr))相对较小,分别为-447.37 mV和0.91μA·cm^(-2)。此外,S-MR、P-MR和P-S-MR整体腐蚀速率分别为0.0249、0.0192和0.0134 mm/a,均小于未处理的试样(0.0441 mm/a)。经过360 h的静载压缩蠕变试验后,P-S-MR试样的高度变化幅度h、平均刚度变化幅度k、耗能变化幅度e和损耗因子变化幅度l分别为-2.23%、19.21%、-15.14%和-3.79%,而未处理试样的k和e非常接近失效阈值,分别为29.45%和-29.31%。以上结果表明,对MR试样进行P-S处理是提升其耐腐蚀及抗蠕变性能的有效技术途径,研究结果可对扩展金属橡胶的工程应用提供重要参考。Metal rubber(MR)is recognized for its exceptional qualities as a vibration and damping structural material,and it exhibits commendable creep resistance under regular work conditions.However,the extent of its creep resistance when subjected to environmental challenges,such as the wet marine environments found aboard ships or the oil-polluted settings that are characteristic of factory processing equipment,remains undetermined.Currently,the literature contains limited investigations into the static compressive creep behavior of MR within marine corrosive environments.This scarcity of research underscores the need for further exploration to ascertain the performance capabilities of MR under these harsh circumstances.Leveraging these insights,this study initiates the fabrication of MR specimens from 304 stainless steel wire via a series of processes including winding,drawing,blank winding,and stamping.Subsequently,the MR specimens undergo distinct surface modification treatments:silanization(S),chemical pickling(P),and a combination of chemical pickling followed by silanization(P-S).These treatments yield three categories of MR specimens that exhibit varied surface attributes.A 5wt.%NaCl solution is employed to emulate a marine environment,and an alternate immersion corrosion creep(AICC)test is conducted on the MR specimens with the aforementioned surface treatments.The post-test analysis involves the examination of the micro-morphology,elemental composition of corrosion products,corrosion resistance,and creep resistance of the three specimens.Characterization techniques,such as tungsten filament scanning electron microscopy(SEM),energy dispersive spectrometry(EDS),and electrochemical comprehensive testing are utilized to facilitate these assessments.The results show that after the AICC test,the corrosion products of the three specimens are mainly O,Fe,and Cr.The corrosion products on the surface of the untreated and S-MR specimens are covered in bulk on the surface of the wire.The P-MR and P-S-MR specimens are adher

关 键 词：金属橡胶 海洋腐蚀环境 硅烷化 腐蚀行为 蠕变性能 

分 类 号：TG174[金属学及工艺—金属表面处理]