Characterization and corrosion behavior of phytic acid coatings, obtained by chemical conversion on magnesium substrates in physiological solution

被引：3

作者：

Hernandez-Alvarado, Laura A. ^{[1
]}

Lomeli, Martha A. ^{[2
]}

Hernandez, Luis S. ^{[2
]}

Miranda, Juana M. ^{[2
]}

Narvaez, Lilia ^{[3
]}

Diaz, Ivan ^{[4
]}

Cristina Garcia-Alonso, Maria ^{[4
]}

Lorenza Escudero, Maria ^{[4
]}

机构：

[1] Univ Autonoma San Luis Potosi, Fac Ciencias Quim, San Luis Potosi 78240, Slp, Mexico

[2] Univ Autonoma San Luis Potosi, Inst Met, San Luis Potosi 78240, Slp, Mexico

[3] Univ Autonoma San Luis Potosi, Fac Habitat, San Luis Potosi 78240, Slp, Mexico

[4] CSIC, Ctr Nacl Invest Met CENIM, Madrid 28040, Spain

来源：

REVISTA DE METALURGIA | 2014年 / 50卷 / 02期

关键词：

AZ31; Biomaterials; Chemical conversion coating; Corrosion; Magnesium; Phytic acid; BIODEGRADABLE MAGNESIUM; IMPLANTS; BIOCOMPATIBILITY; ALLOYS; MG;

D O I：

10.3989/revmetalm.012

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In order to improve the corrosion resistance of biodegradable magnesium and AZ31 magnesium alloy implants, a phytic acid coating has been applied on both substrates and their protective effect against corrosion has been assessed. The morphology and the chemical nature of the conversion coating were analyzed by SEM/EDX, XRD and FTIR. The spectra showed that the conversion coating was amorphous, and it was composed of Mg, O, and P on magnesium surface, along with Al, Zn and C on AZ31 alloy. The main coating components were chelate compounds formed by phytic acid and metallic ions. The corrosion resistance of bare and coated samples was evaluated by potentiodynamic polarization technique in Hank's solution at 37 degrees C. The results indicate that phytic acid conversion coatings provided a very effective protection to the magnesium substrates studied.

引用

页数：8

共 27 条

[1] Corrosion behaviour of AZ31 magnesium alloy with different grain sizes in simulated biological fluids [J].

Alvarez-Lopez, M. ;

Dolores Pereda, Maria ;

del Valle, J. A. ;

Fernandez-Lorenzo, M. ;

Garcia-Alonso, M. C. ;

Ruano, O. A. ;

Escudero, M. L. .

ACTA BIOMATERIALIA, 2010, 6 (05) :1763-1771

[2] Design Considerations for Developing Biodegradable and Bioabsorbable Magnesium Implants [J].

Brar, Harpreet S. ;

Keselowsky, Benjamin G. ;

Sarntinoranont, Malisa ;

Manuel, Michele V. .

JOM, 2011, 63 (04) :100-104

[3] Corrosion behaviour and in vitro/in vivo biocompatibility of surface-modified AZ31 alloy [J].

Carboneras, M. ;

Iglesias, C. ;

Perez-Maceda, B. T. ;

del Valle, J. A. ;

Garcia-Alonso, M. C. ;

Alobera, M. A. ;

Clemente, C. ;

Rubio, J. C. ;

Escudero, M. L. ;

Lozano, R. M. .

REVISTA DE METALURGIA, 2011, 47 (03) :212-223

[4] Chemical conversion treatments to protect biodegradable magnesium in applications as temporary implants for bone repair [J].

Carboneras, M. ;

Hernandez-Alvarado, L. A. ;

Mireles, Y. E. ;

Hernandez, L. S. ;

Garcia-Alonso, M. C. ;

Escudero, M. L. .

REVISTA DE METALURGIA, 2010, 46 (01) :86-92

[5] Review of Corrosion-Resistant Conversion Coatings for Magnesium and Its Alloys [J].

Chen, X. B. ;

Birbilis, N. ;

Abbott, T. B. .

CORROSION, 2011, 67 (03)

[6] Covalent immobilization of phytic acid on Mg by alkaline pre-treatment: Corrosion and degradation behavior in phosphate buffered saline [J].

Chen, Yingqi ;

Wan, Guojiang ;

Wang, Juan ;

Zhao, Sheng ;

Zhao, Yuancong ;

Huang, Nan .

CORROSION SCIENCE, 2013, 75 :280-286

[7]

Cui X., 2008, APPL SURF SCI 1, V255, P2098

[8]

Cui X., 2010, MATER CHEM PHYS, V121, P308

[9] Determination of phytic acid in wheat and wheat products by reverse phase high performance liquid chromatography [J].

Dost, K ;

Tokul, O .

ANALYTICA CHIMICA ACTA, 2006, 558 (1-2) :22-27

[10] Protection of galvanized steel from corrosion in NaCl solution by coverage with phytic acid SAM modified with some cations and thiols [J].

El-Sayed, Abdel-Rahman ;

Harm, Ulrich ;

Mangold, Klaus-Michael ;

Fuerbeth, Wolfram .

CORROSION SCIENCE, 2012, 55 :339-350

← 1 2 3 →