Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

THz Spectroscopic Study of Iron Oxide Layers within Steel-Reinforced Structural Components

Published

Author(s)

Virgil Provenzano, Shin G. Chou

Abstract

In this study, we use THz-based spectroscopy as a non-destructive diagnostic tool to characterize the corrosion by-products (rust) on aged iron structural components. Even though previous Mossbauer spectroscopic findings suggested the presence of an anti-farromagnetic resonance transition (AFR) in the spectral region for rust, the AFR transition has been found to be weak. On the other hand, a strong transition around 24 cm-1 (725 GHz) has been repeatedly measured in reflection mode. The origin of the spectral feature has been associated with the broad vibrational density of states in the low energy region, which is characteristic in disordered polycrystalline materials. From the initial study, the characteristic length scale of the inhomogeneous structure is estimated to be on the order of several to 10s of nm.
Proceedings Title
Symposium O: New Methods in Steel Design--Steel Ab Initio
Volume
1296
Conference Dates
November 29-December 3, 2010
Conference Location
Boston, MA, US
Conference Title
Materials Research Society Fall Meeting

Keywords

rust, thz

Citation

Provenzano, V. and Chou, S. (2011), THz Spectroscopic Study of Iron Oxide Layers within Steel-Reinforced Structural Components, Symposium O: New Methods in Steel Design--Steel Ab Initio , Boston, MA, US, [online], https://doi.org/10.1557/opl.2011.1443 (Accessed April 19, 2024)
Created September 25, 2011, Updated October 12, 2021