Effect of Surface Strengthening on Corrosion Property of Ti-6Al-4V in 3.5% NaCl

Abstract:

By means of Ultrasonic shot peening (USSP), a strengthening surface layer was formed on Ti-6Al-4V. The polarization curves with different treatment times were investigated in 3.5% NaCl. The type of semiconductor for passivation film of 30 min treatment was measured by Mott-Schottky curve, and the thickness of the passivation film was calculated.The result of the polarization curves show that the corrosion resistance of the USSP treatment samples is increased by comparing with the untreated sample. Mott-Schottky curve of 30 min USSP treatment sample show that the passive film belongs to n-type semiconductor. The thickness of the passive film is much thicker than the untreated sample. The charge carrier density is smaller than that of untreated sample. These indicate that the surface strengthening improves the corrosion resistance of the Ti-6Al-4V in 3.5% NaCl by forming stable passive film.

• Periodical: Applied Mechanics and Materials (Volume 853)
• Pages: 473-477
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.853.473
• Online since: September 2016
• Authors: Cong Hui Zhang*, Wei Song, Yao Mian Wang, Gui Zhi Xiao
• Keywords: Corrosion Property, Passive Film, Surface Strengthening

References

[1] N. Zaveri, M. Mahapatra, A. Deceuster. Corrosion resistance of pulsed laser-treated Ti–6Al–4V implant in simulated biofluids. J. Electrochim. Acta. 53 (2008) 5022.

DOI: 10.1016/j.electacta.2008.01.086

[2] R. M. Abou Shahba, W. A. Ghannem, A. E. El-Shenawy. Corrosion and inhibition of Ti-6Al-4V alloy in NaCl solution. J. Int. J. Electrochem. Sci. 6 (2011) 5499.

DOI: 10.1016/s1452-3981(23)18423-9

[3] A. Balyanov, J. Kutnyakova, N. A. Amirkhanova, et al. Corrosion resistance of ultra-grained Ti. J. Scr. Mater. 51 (2004) 225.

[4] L. L. G. da Silva, M. Ueda, M. M. Silva et al. Corrosion behavior of Ti-6Al-4V alloy treated by plasma immersion ion implantation process. J. Surf. Coat. Technol. 201 (2007) 8136-8139.

DOI: 10.1016/j.surfcoat.2006.03.054

[5] H. H. Huang. Effect of fluoride and albumin concentration on the corrosion behavior of Ti–6Al–4V alloy. J. Biomaterials. 24 (2003) 275.

DOI: 10.1016/s0142-9612(02)00315-0

[6] K. Wang, N. R. Tao, G. Liu. Plastic strain-induced grain refinement at the nanometer scale in coppe. J. Acta Mater. 54 (2006) 5281.

DOI: 10.1016/j.actamat.2006.07.013

[7] N. R. Tao, Z. B. Wang, W. P. Tong. An investigation of surface nanocrystallization mechanism in Fe induced by surface mechanical attrition treatment. J. Acta Mater. 50 (2002) 4603.

DOI: 10.1016/s1359-6454(02)00310-5

[8] S. J. Ahn, H. S. Kwon. Effects of solution temperature on electronic properties of passive film formed on Fe in PH 8. 5 borate buffer solution. J. Electrochi. Acta. 49 (2004) 3347-3353.

DOI: 10.1016/j.electacta.2004.02.043

[9] M. J. Carmezim, A. M. Simoes, M. F. Montemor. Capacitance behaviour of passive films on ferritic and austenitic stainless steel. J. Corrosi. Sci. 47 (2005) 581-591.

DOI: 10.1016/j.corsci.2004.07.002