Study of erosion-corrosion and corrosion behavior of CP-Ti during slurry erosion

[+] Author and Article Information
N. Khayatan

School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran 14399-57131, Iran

Hamid M. Ghasemi

School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran 14399-57131, Iran

M. Abedini

Department of Metallurgy and Materials Engineering, Faculty of Engineering, University of Kashan, Kashan 87317-53153, Iran

1Corresponding author.

ASME doi:10.1115/1.4040156 History: Received December 18, 2017; Revised April 23, 2018


The erosion-corrosion and pure erosion of commercially pure titanium have been investigated in a 3.5% sodium chloride solution containing 10, 30, and 60 g/l SiO2 particles with an average size of 318 µm. The tests were performed at impact velocities of 4, 6 and 9 m/s under two impact angles of 40° and 90°. Polarization technique was used to study corrosion behavior of the material during erosion-corrosion. The eroded surfaces were examined by a scanning electron microscope and a surface profilometer. The pure erosion, corrosion, and erosion-corrosion rates increased as impact velocity and sand concentration increased. The corrosion rates of the eroding surfaces under a normal impact were lower than those at an impact angle of 40°. The S/T ratio, i.e., the ratio of synergy to erosion-corrosion rates was about 80% at an impact velocity of 4 m/s, which indicated the high effect of the electrochemical corrosion on the degradation of CP-Ti at low velocity. The S/T ratio decreased to 30% and 15% at the impact velocities of 6 and 9 m/s, respectively. The S/T ratio was also decreased with increasing sand concentration indicating a greater role of mechanical degradation upon the erosion-corrosion rate in the concentrated slurries.

Copyright (c) 2018 by ASME
Your Session has timed out. Please sign back in to continue.






Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In