Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-24T20:45:48.317Z Has data issue: false hasContentIssue false
  • English
  • Français

Fabrication of a Conductometric Sensor for Crevice Corrosion Studies

Published online by Cambridge University Press:  01 February 2011

Xiaoyan Wang ,
Robert G. Kelly ,
Jason S. Lee  and
Michael L. Reed
Xiaoyan Wang
Affiliation:
Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, VA 22904-4743, U.S.A.
Robert G. Kelly
Affiliation:
Department of Materials Science and Engineering, University of Virginia, Charlottesville, VA 22904-4745, U.S.A.
Jason S. Lee
Affiliation:
Department of Materials Science and Engineering, University of Virginia, Charlottesville, VA 22904-4745, U.S.A.
Michael L. Reed
Affiliation:
Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, VA 22904-4743, U.S.A.
Get access

Abstract

Microfabricated crevice corrosion samples have been employed in experiments that provided important information necessary for developing an accurate, comprehensive, and reliable crevice corrosion model. Acquiring real-time spatial information of crevice corrosion is also essential in analyzing corrosion processes. Integration of arrays of solid-state microsensors, such as conductometric sensors, pH and other ion concentration potentiometric sensors, into the crevice corrosion samples will allow for in-situ real-time data acquisition. In the present work, crevice corrosion samples with conductometric sensor arrays are made using the techniques developed for thin film semiconductor processing and microelectromechanical systems (MEMS) fabrication. The crevice corrosion testing sample is constructed by coupling a crevice former to a crevice substrate and has a uniform crevice gap. A conductometric sensor array built on a silicon wafer is incorporated into the crevice former. Each of these sensors is composed of a pair of thin film gold electrodes, which enables in-situ spatial conductivity analysis of crevice corrosion. Information about metal ion concentration and active chemistry inside the crevice can also be obtained.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 729: Symposium U – MEMS and BioMEMS , 2002 , U3.13
Copyright
Copyright © Materials Research Society 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. DeJong, L., “Investigations of Crevice Corrosion Scaling Laws Using Microfabrication Techniques and Modeling,” Master Thesis, Department of Materials Science, University of Virginia, (August, 1999).Google Scholar
2. Kelly, R. G., Lee, J. S., Reed, M.L., and Wang, X., “Recent Computational and Experimental Investigations of Crevice Corrosion,” Invited Paper, Symposium H, MRS Spring Meeting, San Francisco, CA, April, 2000.Google Scholar
3. Wang, X., Kelly, R.G., Lee, J.S., and Reed, M.L., “Microfabrication of Crevice Corrosion Samples,” MRS Symposium Proceedings Vol 657, EE5.31, MRS Fall Meeting Symposium EE, Boston, MA, November 27 - December 1, 2000.Google Scholar
4. Lee, J.S., “Investigation of Crevice Corrosion Using Computational Modeling and Microfabrication Techniques,” Master Thesis, Department of Materials Science, University of Virginia, (January, 2002).Google Scholar
5. Abdulsalam, M.I. and Pickering, H.W., “Effect of the Applied Potential on the Potential and Current Distributions within Crevices in Pure Nickel,” Corrosion Science 41, 351–372, (1999).Google Scholar
6. Steinschaden, A., Adamovic, D., Jobst, G., Glatz, R., and Urban, G., “Miniaturised Thin Film Conductometric Biosensors with High Dynamic Range and High Sensitivity,” Sensors and Actuators B 44, 365–369, (1997).Google Scholar
7. Cottis, R. and Turgoose, S., Electrochemical Impedance and Noise, NACE International, Houston, TX, 1999.Google Scholar