Applications of molecular spectroscopy methods to the study of metal dusting corrosion.

The interrogation of molecular vibrations in crystalline and amorphous solids by Raman and infrared spectroscopy methods can provide a wealth of revealing information concerning the composition, morphology, and spatial distribution of the extant phases. When these measurements are made in situ, such as during processes taking place in extreme environments (e.g., elevated temperature and pressure, oxidizing or reducing), where phases are evolving and/or dissipating, it is also possible to derive kinetic and mechanistic parameters. This paper summarizes the possibilities and limitations involved in using various types of Raman and infrared measurement methods to study metal dusting corrosion. Applications of conventional, microprobe, and imaging molecular spectroscopy approaches are discussed, with examples taken directly from metal dusting investigations. Some perspective is offered concerning the origin of observable condensed matter phonons emanating from the surface films and the carbon particles that accompany carbon dusting on various types of metals and alloys. Concepts for the systematic investigation of carbon dusting chemistry using molecular spectroscopy methods are presented.

[1]  V. Maroni,et al.  Study of metal dusting mechanism in iron using Raman spectroscopy and x-ray diffraction. , 2002 .

[2]  V. Maroni,et al.  An in situ infrared spectroscopic investigation of the pyrolysis of ethylene glycol encapsulated in silica sodalite. , 2001 .

[3]  S. A. Johnson,et al.  Real time chemical vapor detection and enhancement utilizing aerosol adsorption , 1999 .

[4]  J. Yates,et al.  Surface Infrared and Raman Spectroscopy: Methods and Applications , 1995 .

[5]  K. Krishnan,et al.  Practical Fourier Transform Infrared Spectroscopy: Industrial and Laboratory Chemical Analysis , 1989 .

[6]  William B. White,et al.  Characterization of diamond films by Raman spectroscopy , 1989 .

[7]  V. Maroni,et al.  The Use of Diffuse Reflectance Infrared Spectroscopy for Studies of Molecular Sieve Catalysis , 1988 .

[8]  S. Johnson,et al.  Airborne Detection of Acidic Sulfate Aerosol Using an ATR Impactor , 1982 .

[9]  Chris W. Brown,et al.  Raman Spectra of Possible Corrosion Products of Iron , 1978 .

[10]  Philip L. Walker,et al.  Laser raman studies on carbons , 1973 .

[11]  T. Mernagh,et al.  Raman spectra of Graphon carbon black , 1984 .

[12]  M. S. Dresselhaus,et al.  Model for Raman scattering from incompletely graphitized carbons , 1982 .

[13]  K. Nakamoto.  Infrared and Raman Spectra of Inorganic and Coordination Compounds , 1978 .

[14]  John P. McTague,et al.  Molecular Vibrations in Crystals , 1978 .

[15]  Yoichiro Sato,et al.  Raman spectra of carbons at 2600–3300 cm−1 region , 1978 .

[16]  M. Inagaki,et al.  Raman spectra of ground natural graphite , 1978 .