Hybrid Epoxy-silica Anticorrosive Coatings for Carbon Steel

Hybrid Epoxy-silica Anticorrosive Coatings for Carbon Steel

J. Varela V. Rodriuez-Lugo E. Rubio V. M. Castano

Universidad Nacional Autónoma de México, Facultad de Química, Ciudad Universitaria, México D.F.

Centro Universitario de Vinculación, Benemérita Universidad Autónoma de Puebla, Prolongación de la 24 sur y Av. San Claudio, sin número, Ciudad universitaria. Col. San Manuel. Puebla, Puebla 72570.

Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro, Querétaro 76230.

Corresponding Author Email: 
meneses@servidor.unam.mx
Page: 
59-66
|
DOI: 
https://doi.org/10.14447/jnmes.v14i1.131
Received: 
9 November 2010
| |
Accepted: 
14 January 2011
| | Citation
Abstract: 

A series of hybrid coatings based on epoxy resin, tetraethoxysilane and coupling agent, were synthesized through a sol-gel technique and characterized by Fourier-Transformation Infrared (FTIR), Scanning Electron Microscopy (SEM), and Atomic Force Microscopy (AFM). Their corrosion protection effect was evaluated on cold rolled carbon steel (CRCS) coupons by performing visual analysis (ASTM test) and electrochemical measurements (electrochemical noise). The best performance anticorrosive was for the 75 wt% epoxy-25 wt% silica system in 5 wt% aqueous NaCl electrolyte. Enhancement of corrosion protection effect of the hybrids coatings may be due to the increase of the adhesion strength of the hybrid sol– gel coatings on CRCS coupons relative to pure epoxy, which was further evidenced by the measuring adhesion by tape test (ASTM D3359-02).

Keywords: 

Hybrid coatings, anticorrosive coatings

1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
Acknowledgements

The authors are indebted to CONACYT (Consejo Nacional de Ciencia y Tecnología) for their sponsorship of this research. The authors also thank to Dr. Ángeles Díaz Sánchez and Dr. Demetrio Mendoza Anaya of the Instituto Nacional de Investigaciones Nucleares for their support during the various stages of this Project.

  References

[1] Denny AJ, “Principles and Prevention of Corrosion.” Macmillan Publishing Company, New York, NY (1992).

[2] Mattsson E, “Basic Corrosion Technology for Scientist and Engineers.” Second Edition, The Institute of Materials, London, UK (1996).

[3] Koch GH , Brongers MPH, Thompson NG, Virmani YP, Payer and JH, Corrosion Cost and Preventive Strategies in the United States , Report No. FHWA - RD - 01 - 156, Federal Highway Administration, U.S. Department of Transportation, McLean VA, March (2002).

[4] Wu KH, Chang TC, Yang CC, Wang GP, Thin Solid Films, 513, 84 (2006).

[5] Sang Il S, Jae HK, Kyung HC, Young YH, Surface & Coatings Technology, 200, 3468 (2006).

[6] Guglielmi M, J. Sol-Gel Sci. Tech., 8, 443 (1997).

[7] Nazanin F, Azam R and Amir EL, Iranian Polymer Journal, 14, 155 (2005).

[8] Wei-Gang J, Ji-Ming H, Liang L, Jian-Qing Z, Chu-Nan C, Surface & Coatings Technology, 201, 4789 (2007).

[9]  Zheludkevich ML, Miranda I, Salvadob and Ferreira MGS, J. Mater. Chem., 15, 5099 (2005).

[10] Pagliaro M, “Silica-Based Materials for Advanced Chemical Applications” RSC Publishing, Cambridge (2009).

[11] Messaddeq SH, Pulcinelli SH, Santilli CV, Guastaldi AC, Messaddeq Y, Journal of Non-Crystalline Solids, 247, 164 (1999).

[12] Chou TP, Chandrasekaran C, Limmer SJ, Seraji S., Wu Y, Forbes MJ, Nguyen C, Cao GZ, Journal of Non-Cristallyne Solids, 290, 153 (2001).

[13] Ulf Bexell, T. Mikael Grehk, Surface & Coatings Technology, 201, 4734 (2007).

[14] Steven R. Davis, Adrian R. Brough, Alan A, Journal of Non-Crystalline Solids, 315, 197 (2003).

[15] Rubio E., Almaral J., Ramírez-Bon R., Castaño V., V. Rodríguez, Optical Materials, 27, 1266 (2005).

[16] Ying-Ling L, Wen-Lung W, Keh-Ying H, Wen-Hsuan H, Thermochimica Acta, 412, 139 (2004).

[17] Mabbutt S, Mills DJ, Woodcock CP, Progress in Organic Coatings, 59, 192 (2007).

[18] Mills DJ, Mabbutt S, Progress in Organic Coatings, 41, 39 (2000).

[19] De Rosa RL, Earl DA, Bierwagen GP, Corrosion Science, 44, 1607 (2002).

[20] Hladky K, Dawson JL, Corrosion Science, 21, 317 (1981).

[21] Hladky K, Dawson JL, Corrosion Science, 22, 231 (1982).

[22] Cottis R. and Turgoose S., “Electrochemical Impedance and noise.” Corrosion Testing Made Easy Series (ed. B.C. Syrett), 68; Houston, NACE International (1999).