Simulating Study of Atmospheric Corrosion of Galvanized Steels: Influence of Zinc Rusts on the Formation of β-FeOOH Rust Particles by Aerial Oxidation of Aqueous FeCl2 Solution

To simulate the corrosion of galvanized steel in a marine zone, steel rust of β-FeOOH particles was prepared by aerial oxidation of aqueous FeCl2 solutions containing ZnCl2 and zinc rusts such as ZnO and zinc hydroxychloride (Zn5(OH)8Cl2·H2O, ZHC). The crystallinity and particle size of β-FeOOH were slightly decreased by adding the ZnCl2. The produced particles contained a small amount of ZnCl2, while the zinc rusts of ZnO and ZHC markedly impeded the crystallization and particle growth of β-FeOOH. In the presence of a large amount of zinc rusts, the formation of β-FeOOH was suppressed and γ-FeOOH and ZHC of which the particle size was larger than that of β-FeOOH were generated. The inhibitory effect on the formation of β-FeOOH was on order of ZHC ≈ ZnO ≫ ZnCl2. The effect of zinc rusts was ascribed to the increment of solution pH by dissolution of rust particles and adsorption of Zn(II) on a precursor of β-FeOOH particles. The adsorption of CO2 on the products was also suppressed by the addition of ZnCl2...

[1]  K. Kandori,et al.  Role of zinc compounds on the formation, morphology, and adsorption characteristics of β-FeOOH rusts , 2010 .

[2]  K. Kandori,et al.  Synthesis and adsorption property of zinc rust of zinc hydroxynitrate , 2010 .

[3]  Hidekazu Tanaka,et al.  Influence of thermal treatment on the structure and adsorption properties of layered zinc hydroxychloride , 2010 .

[4]  K. Kandori,et al.  Influence of Ti(IV) on the structure and properties of zinc hydroxychloride , 2008 .

[5]  K. Kandori,et al.  Synthesis and characterization of layered zinc hydroxychlorides , 2007 .

[6]  K. Kandori,et al.  Influence of Metal Ions on the Transformation of γ-FeOOH into α-FeOOH , 2004 .

[7]  K. Kandori,et al.  Influence of metal ions on the formation of artificial zinc rusts , 2004 .

[8]  K. Kandori,et al.  Influence of hydrolyzed and nonhydrolyzed Ti, Cr, and Al ions on the formation of beta-FeOOH particles. , 2003, Journal of colloid and interface science.

[9]  Takenori Nakayama,et al.  Approach to Enhancement Mechanism of Resistance to Corrosion of Weathering Steels by Artificially Synthesized Rusts , 2003 .

[10]  Chuanwei Yan,et al.  Effects of NaCl and SO2 on the initial atmospheric corrosion of zinc , 2002 .

[11]  K. Kandori,et al.  Structures of β-FeOOH Particles Formed in the Presence of Ti(IV), Cr(III), and Cu(II) Ions , 2002 .

[12]  Takenori Nakayama,et al.  Influences of metal ions on the formation of β-FeOOH particles , 2001 .

[13]  P. Quintana,et al.  Study of the composition and morphology of initial stages of corrosion products formed on Zn plates exposed to the atmosphere of southeast Mexico , 1996 .

[14]  C. Leygraf,et al.  The formation of Zn4Cl2(OH)4SO4 · 5H2O in an urban and an industrial atmosphere , 1994 .

[15]  C. Leygraf,et al.  The formation of Zn4SO4(OH)6·4H2O in a rural atmosphere , 1994 .

[16]  C. Leygraf,et al.  Formation of NaZn4Cl(OH)6SO4 · 6H2O in a marine atmosphere , 1993 .

[17]  I. Odnevall,et al.  Zinc chlorohydroxosulfates: Newly Discovered Corrosion Products on Zinc. Structure Determination of NaZn4Cl(OH)6SO4·6H2O and X-ray study of Zn4Cl2(OH)4SO4·5H2O , 1993 .

[18]  C. Yapp,et al.  Infrared Spectral Evidence for a Minor Fe(III) Carbonate-Bearing Component in Natural Goethite , 1990 .

[19]  C. Yapp.  A possible goethite-iron(III) carbonate solid solution and the determination of CO2 partial pressures in low-temperature geologic systems , 1987 .

[20]  A. R. Fraser,et al.  Adsorption of carbon dioxide on goethite (α-FeOOH) surfaces, and its implications for anion adsorption , 1975 .

[21]  T. Ishikawa,et al.  The effect of copper(II) on the Crystallization of α‐FeOOH , 1972 .

[22]  Paul Keller,et al.  Vorkommen, Entstehung und Phasenumwandlung von β‐FeOOH in Rost , 1969 .

[23]  J. D. Bernal,et al.  The Oxides and Hydroxides of Iron and Their Structural Inter-Relationships , 1959 .