富锌涂层的耐蚀性能和评价研究
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摘要
以有机富锌涂层为研究对象,采用室内加速腐蚀试验方法模拟带涂层钢结构在湿热大气环境下的腐蚀。利用交流阻抗测试技术的电化学方法研究电化学腐蚀失效过程,测得不同腐蚀时间涂层的交流阻抗图谱,对其阻抗数据进行解析,揭示涂层耐蚀性能的变化规律,并建立电化学参数涂层电阻与腐蚀时间之间的分析模型,利用高频相位角和低频阻抗值对涂层的耐蚀性能进行快速评估。通过对特征参数的分析,更加准确地得到了涂层在湿热环境下腐蚀防护性能的变化过程。
The paper took organic zinc-rich coating as the research object,using the accelerated corrosion test method to simulate the corrosion of the coated steel structure in the hygrothermal atmosphere. The electrochemical corrosion process was studied by using AC impedance test method which measured the coatings with different corrosion times and analyzed the variation of corrosion resistance of the coatings. The analytical model between electrochemical resistance coating resistance and corrosion time was established,and the high-frequency phase angle and lowfrequency impedance values were used to quickly evaluate the corrosion resistance of the coating.Through the analysis of the characteristic parameters,the change process of the corrosion protection performance of the coating under the hygrothermal environment was obtained more accurately.
The paper took organic zinc-rich coating as the research object,using the accelerated corrosion test method to simulate the corrosion of the coated steel structure in the hygrothermal atmosphere. The electrochemical corrosion process was studied by using AC impedance test method which measured the coatings with different corrosion times and analyzed the variation of corrosion resistance of the coatings. The analytical model between electrochemical resistance coating resistance and corrosion time was established,and the high-frequency phase angle and lowfrequency impedance values were used to quickly evaluate the corrosion resistance of the coating.Through the analysis of the characteristic parameters,the change process of the corrosion protection performance of the coating under the hygrothermal environment was obtained more accurately.
引文
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[2]王林.钢结构长效防腐技术的探讨[J].江西建材,2008(1):32-33.
[3]刘刚,张奎志,曲政,等.某滨海电厂钢结构腐蚀防护[J].腐蚀与防护,2004,25(9):400-401.
[4]梁利生.钢结构表面腐蚀的危害与防护[J].山西建筑,2007,33(30):165-166.
[5]王彩华,吴剑锋,张丽娜.钢结构的腐蚀与防护[J].建材技术与应用,2009(2):17-19.
[6]张磊,李子清.钢结构腐蚀与涂层防护[J].全面腐蚀控制,2014(11):25-28.
[7]张瑞.环氧丙聚涂层失效规律及剩余寿命预测研究[D].长沙:湖南大学,2016.
[8]付婷.涂层保护性能与失效程度的快速检测与评价研究[D].北京:北京化工大学,2017.
[9]张宗宝.船底防护涂层动态性能研究[D].大连:大连海事大学,2009.
[10]中华人民共和国质量监督检验检疫总局.涂装前钢材表面锈蚀等级和除锈等级:GB 8923—88[S].北京:中国标准出版社,1988.
[11]中华人民共和国住房和城乡建设部.建筑防腐蚀工程施工质量验收标准:GB/T 50224—2018[S].北京:中国计划出版社,2018.
[12]全国电工电子产品环境条件与环境试验标准化技术委员会.电工电子产品基本环境试验规程试验Ca:恒定湿热试验方法:GB/T 2423. 3—93[S].北京:中国标准出版社,1993.
[13]刘新灵,刘春江.飞机金属结构有机防护涂层损伤判据评价及其失效预测[J].失效分析与预防,2015,10(5):305-313.
[14]张金涛,胡吉明,张鉴清.有机涂层的现代研究方法[J].材料科学与工程学报,2003,21(5):763-768.
[15] MCINTYRE J M, PHAM H Q. Electrochemical Impedance Spectroscopy:A Tool for Organic Coatings Optimizations[J].Progress in Organic Coatings,1996,27(1):201-207.
[16] XIA D,SONG S,WANG J,et al. Fast Evaluation of Degradation Degree of Organic Coatings by Analyzing Electrochemical Impedance Spectroscopy Data[J]. Transactions of Tianjin University,2012,18(1):15-20.
[17]徐安桃,张振楠,张睿,等.军用车辆有机涂层盐雾环境下腐蚀行为研究[J].涂料工业,2017(9):18-22.
[18]孙波,徐安桃,张振楠,等.基于EIS特征参数的有机涂层腐蚀行为研究[J].军事交通学院学报,2016,18(9):89-94.
[19] MAHDAVIAN M A, ATTAR M M. Investigation on Zinc Phosphate Effectiveness at Different Pigment Volume Concentrations Via Electrochemical Impedance Spectroscopy[J].Electrochimica Acta,2005,50(24):4645-4648.
[20] BUSCA G,LORENZELLI V. Infrared Spectroscopic Identification of Species Arising from Reactive Adsorption of Carbon Oxides on Metal Oxide Surfaces[J]. Materials Chemistry,1982,7(1):89-126.
[21]张鉴清,曹楚南.电化学阻抗谱方法研究评价有机涂层[J].腐蚀与防护,1998,19(3):99-104.
[22] YASUDA H,YU Q S,CHEN M. Interfacial Factors in Corrosion Protection:An EIS Study of Model Systems[J]. Progress in Organic Coatings,2001,41(4):273-279.
[23] POTVIN E, BROSSARD L, LAROCHELLE G. Corrosion Protective Performances of Commercial Low-voc Epoxy/Urethane Coatings on Hot-Rolled 1010 Mild Steel[J]. Progress in Organic Coatings,1997,31(4):363-373.
[24] BIERWAGEN G P,HE L, LI J,et al. Studies of a New Accelerated Evaluation Method for Coating Corrosion ResistanceThermal Cycling Testing[J]. Progress in Organic Coatings,2000,39(1):67-78.