Effects of sealing on corrosion behaviour of plasma-sprayed Cr2O3-8TiO2 coating

被引：26
作者：
Zhang, Jingjing [1 ]
Wang, Zehua [1 ]
Lin, Pinghua [2 ]
机构：
[1] Hohai Univ, Coll Mech & Mat, Nanjing 210098, Jiangsu, Peoples R China
[2] Huazhong Univ Sci & Technol, Wuhan 430078, Peoples R China
来源：
SURFACE ENGINEERING | 2013年 / 29卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Coating; Plasma-sprayed; Sealing; Corrosion; THERMAL BARRIER COATINGS; CERAMIC COATINGS; ALUMINA COATINGS; WEAR-RESISTANCE; OXIDE COATINGS; ENVIRONMENTS;
D O I：
10.1179/1743294413Y.0000000161
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Plasma-sprayed Cr2O3-8 wt-% TiO2 coatings were deposited on mild steel and sealed by epoxy resin and silicone resin in different processes. The microstructure and corrosion resistance of all coatings were investigated. The results showed that silicone resin sealant can seal the coating well and 91% of interconnected porosity was blocked. The sealant can penetrate into the coating by more than 280 mu m. The coating sealed with silicone resin in vacuum conditions had the highest corrosion potential E-corr (-375 mV) and lowest corrosion current density i(corr) (17 mA m(-2)) in electrochemical tests. Correspondingly, the unsealed coating had the lowest E-corr and highest i(corr). The corrosion resistance of the coatings was in the following order: coating sealed with silicone resin in vacuum>coating sealed with silicone resin in air. coating sealed with epoxy resin in vacuum>coating sealed with epoxy resin in air. unsealed coating.
引用
收藏
页码：594 / 599
页数：6
相关论文
共 21 条
  • [11] Correlation between microstructural characteristics and the abrasion wear resistance of sealed thermal-sprayed coatings
    Liscano, S
    Gil, L
    Staia, MH
    [J]. SURFACE & COATINGS TECHNOLOGY, 2005, 200 (5-6) : 1310 - 1314
  • [12] Effect of sealing treatment on the corrosion resistance of thermal-sprayed ceramic coatings
    Liscano, S
    Gil, L
    Staia, MH
    [J]. SURFACE & COATINGS TECHNOLOGY, 2004, 188 (1-3 SPEC.ISS.) : 135 - 139
  • [13] Corrosion and tribological behaviors of chromium oxide coatings prepared by the glow-discharge plasma technique
    Liu, Hongbing
    Tao, Jie
    Xu, Jiang
    Chen, Zhaofeng
    Gao, Qiang
    [J]. SURFACE & COATINGS TECHNOLOGY, 2009, 204 (1-2) : 28 - 36
  • [14] Thermal cycle properties of plasma sprayed YSZ/Al2O3 thermal barrier coatings
    Saral, U.
    Toplan, N.
    [J]. SURFACE ENGINEERING, 2009, 25 (07) : 541 - 547
  • [15] Laser surface modification of plasma sprayed yttria stabilised zirconia coatings on type 316L stainless steel
    Shankar, A. Ravi
    Mudali, U. Kumachi
    [J]. SURFACE ENGINEERING, 2009, 25 (03) : 241 - 248
  • [16] Effect of atmospheric plasma spraying parameters on porosity level of alumina coatings
    Thirumalaikumarasamy, D.
    Shanmugam, K.
    Balasubramanian, V.
    [J]. SURFACE ENGINEERING, 2012, 28 (10) : 759 - 766
  • [17] Influence of feedstock particle size on corrosion resistance of air plasma sprayed NiTi coatings applied to AISI 1045 steel
    Verdian, M. M.
    Salehi, M.
    Raeissi, K.
    [J]. SURFACE ENGINEERING, 2010, 26 (06) : 478 - 483
  • [18] Segmented lanthanum cerium oxide thermal barrier coatings by atmospheric plasma spray
    Wang, Y.
    Guo, H. B.
    Li, Z. Y.
    Gong, S. K.
    [J]. SURFACE ENGINEERING, 2009, 25 (07) : 555 - 558
  • [19] Corrosion characteristics of plasma-sprayed Ni-coated WC coatings comparison with different post-treatment
    Xie, Guozhi
    Lin, Xiaoyan
    Wang, Keyu
    Mo, Xiangyin
    Zhang, Dongjie
    Lin, Pinghua
    [J]. CORROSION SCIENCE, 2007, 49 (02) : 662 - 671
  • [20] Corrosion of plasma sprayed NiCrAl/Al2O3-13 wt-%TiO2 coatings with and without sealing
    Zhang, J. J.
    Wang, Z. H.
    Lin, P. H.
    Si, L. Q.
    Shen, G. J.
    Zhou, Z. H.
    Jiang, S. Q.
    Lu, W. H.
    [J]. SURFACE ENGINEERING, 2012, 28 (05) : 345 - 350
123