期刊文献+

磷酸锌对环氧涂层破损处金属的缓蚀作用 被引量:9

ROLES OF ZINC PHOSPHATE ON THE CORROSION OF THE SCRATCHED EPOXY COATING
原文传递
导出
摘要 用电化学阻抗谱(EIS)、电化学噪声(EN)及扫描电化学显微镜(SECM)等方法对带有划痕的环氧清漆涂层和环氧/磷酸锌涂层进行了测试,研究了磷酸锌对涂层破损处金属的缓蚀作用。EIS和EN的结果表明:加入磷酸锌后涂层下金属基体的腐蚀受到抑制;SECM结果直观地证明了磷酸锌对涂层划痕有修复作用。用电化学噪声的散粒噪声理论并结合随机分析方法研究了磷酸锌的作用机制,结果发现加入磷酸锌不但大大减缓了腐蚀的孕育速度,还降低了腐蚀的生长概率,因而能够减缓金属基体腐蚀的进行。 The roles of zinc phosphate on the corrosion of the scratched coating were studied by electrochemical impedance spectroscopy(EIS), electrochemical noise measurements(EN) and scanning electrochemical microscopy(SECM). The experimental results of EN and EIS revealed that zinc phosphate had inhibition effect on the corrosion of the scratched epoxy coatings. The SECM results implied that the scratched surface of zinc phosphate coating was healed by an insulated film indeed. The mechanism of zinc phosphate on the corrosion of the scratched coating was analyzed based on the combined stochastic theory and shot noise theory using the Weibull distribution and Gumbel distribution function. It showed that the corrosion generation rate and the corrosion growth probability of the metal under the coatings were decreased with the addition of zinc phosphate.
出处 《中国腐蚀与防护学报》 CAS CSCD 北大核心 2009年第6期437-441,共5页 Journal of Chinese Society For Corrosion and Protection
基金 国家自然科学基金项目(50535050 50405042)资助
关键词 环氧涂层 磷酸锌 散粒噪声 扫描电化学显微镜 随机分析 epoxy coating zinc phosphate shot noise SECM stochastic theory
  • 相关文献

参考文献19

  • 1Flis J, Dawson. J L, Gill J. Impedance and electrochemical noise measurements on iron and iron-carbon alloys in hot caustic soda [J]. Corros. Sci., 1991, 8:877-892.
  • 2Uruchurtu J. Electrochemical investigations of the activation mechanism of aluminum [J]. Corrosion, 1991, 47(6): 472.
  • 3Smulko J, Darowicki K. Nonlinearity of electrochemical noise caused by pitting corrosion [J]. J. Electroanal. Chem., 2003, 545:59.
  • 4Monticelli C, Brunoro G, Frignani A. Evaluation of corrosion inhibitors by electrochemical noise analysis [J]. J. Electrochem. Soc., 1992, 139:706.
  • 5曹楚南.腐蚀电化学中的频谱分析研究[J].腐蚀科学与防护技术,1993,5(1):1-9. 被引量:11
  • 6Bertocci U, Frydman J, Gabrielli C. Analysis of electrochemical noise by power spectral density applied to corrosion studies [J]. J. Electrochem. Soc., 1998, 145(8): 2780- 2785.
  • 7Aballe A, Bethencourt M, Botana F J, et al. Wavelet transform-based analysis for electrochemical noise [J]. Electrochem. Commun., 1999, 1(7): 266.
  • 8Chen J, Bogaerts W. The physical meaning of noise resistance [J]. Corros. Sci., 1995, 37:1839-1842.
  • 9Sanchez-Amaya J M, Cottis R A, Botana F J. Shot noise and statistical paramenters of the estimation of corrosion mechanisms [J]. Corros. Sci., 2005, 47:3280-3299.
  • 10Cottis R A. Interpretation of electrochemical noise data [J]. Corrosion, 2001, 57:265-285.

二级参考文献17

  • 1曹楚南.关于缓蚀剂研究的电化学方法[J].腐蚀科学与防护技术,1990,2(1):1-9. 被引量:75
  • 2A AMIRUDIN, D THIENY. Application of electrochemical impedance spectroscopy to study the degradation of polymer - coated metals [J]. Prog Org Coat, 1995(26) :1 - 18.
  • 3JOHN M MCLNTYRE, HA Q PHAM. Electrochemical impedance spectroscopy; a stool for organic coatings optimizitions [ J ]. Prog Org Coat, 1996 (27) :201 - 207.
  • 4C P WOODCOCK, D J MILLS, H T SINGH. Use of electrochemical noise method to investigate the anti - corrosive properties of a set of compliant coatings [ J ]. Prog Org Coat,2005 (52) :257 - 262.
  • 5CARLA COUVEIA - CARIDADE, M ISABEL S PEREIRA, CHRISTOPHER M A BRETT. Electrochemical noise and impedance study of aluminium in weakly acid chloride solution [ J ]. Electrochimica Acta, 2004(49) :785 -793.
  • 6Q LE THU, G P BIERWAGEN, S TOUZAIN. EIS and ENM mea surements for three different organic coatings on aluminum[ J ]. Prog Org Coat, 2001 (42) : 179 - 187.
  • 7F MANSFELD, L THAN, C C LEE, et al. Analysis of electrochemical impedance and noise data for polymer coated metals [ J ]. Corrosion, 1997, 39(2) :255 -279.
  • 8F MANSFELD, H XIAO, L T HAN, et al. Electrochemical impeda nce and noise data for polymer coated steel exposed at remote marine test sites[J]. Prog Org Coat, 1997(30) : 89-100.
  • 9F MANSFELD, C C LEE, G ZHANG. Comparison of electrochemical impedance and noise data in the frequency domain[J]. Electrochimica Acta, 1998,43 (3 - 4 ) :435 - 438.
  • 10XIAO H, HAN L T, LEE C C, et al. Collection of electrochemical impedance and noise data for polymer - coated steel from remote test sites[J]. Corrosion, 1997(53) : 412 -422.

共引文献19

同被引文献112

引证文献9

二级引证文献50

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部