Raman spectroscopy - Steels

[jeanjmds]

Hi everybody,

I'm just starting to read something about raman spectroscopy and I'd appreciate your help. Can anyone tell me if is it possible to study (and identify) phase transition or formation in steels using raman spectroscopy? I need to study about Ni3Ti (eta) phase in steels. Ni3Ti is na hexagonal phase (D024).

In any case, even if this is not possible, can you please tell me why?

Thanks a lot.

 

[metengr]

Are you a graduate student looking for help??

 

[jeanjmds]

metengr,

sorry but, related to my question, I really don't understand how this information can be relevant or not. I'm looking for help as an engineer, professor and PHD student that doesn't have any kind of experience about Raman spectroscopy.

 

[metengr]

It is relevant if you read the rules for posting on ET that student posts are prohibited. Recognizing you are a graduate student have you researched this information on your own? Have you discussed this with the supplier of this equipment? From what little time I spent reviewing Raman Spectroscopy, there is information on this equipment and application, so I would start with the manufacturer regarding application.

 

[IRstuff]

How about:

http://www.lmgtfy.com/?q=raman+spectroscopy+steel

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

https://www.youtube.com/watch?v=BKorP55Aqvg

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[arunmrao]

As an aside, I had the opportunity to study Material Science under some of the professors mentioned below and saw the first machine built by Sir C.V Raman for his pioneering work.

Professor C. V. Raman and the Department of Physics,
IISc, 1933-1948
M. A. ViSWAMITRA
Chairman. Department of Physics, Indian Institute of Science, Bangalore 560 012.

http://journal.library.iisc.ernet.in/index.php/iisc/article/viewFile/3216/3270

"Even,if you are a minority of one, truth is the truth."

Mahatma Gandhi.

 

[HakiNoir]

Why Raman? Have you tried XRD? You can try combined EDS and EBSD as well on SEM.
By the way, I used Raman and its not hard at all. You just need to find the associated wavelength for Ni3Ti from references. Give it a try!

 

[Chumpes]

I gess I remember that cubic structures (cfc, cc, steel...) cannot be characterized by Raman spectroscopy due to symetry and space group theory, because Raman interaction of photons with phonons needs the time-derivative of the polarizability at average position to be not nil.
regads

 

[replica]

I do not think that raman is suitable for metal.....you may use XRD (best for phase identification), SEM with EDS or Transmission Electron Microscope (TEM)- combinining EDS and electron diffraction pattern to get the information on the crystal structure of your NiTi phase.

 

[EdStainless]

You might be able to use Raman if you were extracting secondary phases particles and testing the residue.

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P.E. Metallurgy, Plymouth Tube