Effects of powder size and metallic bonding layer on corrosion behaviour of plasma-sprayed Al2O3-13% TiO2 coated mild steel in fresh tropical seawater

被引：19

作者：

Yusoff, N. H. N. ^{[1
]}

Ghazali, M. J. ^{[2
]}

Isa, M. C. ^{[1
]}

Daud, A. R. ^{[3
]}

Muchtar, A. ^{[2
]}

机构：

[1] KD MALAYA, Sci & Technol Res Inst Def STRIDE, Maritime Technol Div, Lumut 32100, Perak, Malaysia

[2] Univ Kebangsaan Malaysia, Dept Mech & Mat Engn, Fac Engn & Built Environm, Bangi 43600, Selangor, Malaysia

[3] Univ Kebangsaan Malaysia, Fac Sci & Technol, Sch Appl Phys, Bangi 43600, Selangor, Malaysia

来源：

CERAMICS INTERNATIONAL | 2013年 / 39卷 / 03期

关键词：

Corrosion; Al2O3; TiO2; Structural applications; MECHANICAL-PROPERTIES; CERAMIC COATINGS; WT.PERCENT TIO2; MICROSTRUCTURE; WEAR; RESISTANCE; AL2O3;

D O I：

10.1016/j.ceramint.2012.09.012

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This study focuses on the effects of powder size and Ni-Al bonding layer on the electrochemical behaviour of plasma-sprayed Al2O3-13% TiO2 coating in fresh tropical seawater. The presence of the metallic bonding layer reduces the coating porosity and increases the surface roughness for both microparticle and nanoparticle coatings. The nanoparticle exhibits better corrosion rate of 1.9 x 10(-6) mmpy compared to the microparticle coating, with a corrosion rate of 3.05 x 10(-6) mmpy. However, the presence of the metallic bonding layer increases the corrosion rate for both micro and nanoparticle coatings. The corrosion mechanism for the coating with and'without the metallic bonding layer is discussed in detail. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：2527 / 2533

页数：7

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