×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Evaluation of elements in a organic coating/paint

Evaluation of elements in a organic coating/paint

Evaluation of elements in a organic coating/paint

(OP)
Dear all

I need to evaluate, both quantitative and qualitative, the elements and molecular constituiton of a coating/ paint applied by spray.  This coating is used in situations of low friction needs.
I'm going to do some qualititive analysis in XRD and SEM/ EDX. XRD should give me the results very easily but they are only qualitative. SEM/ EDX for elements with atomic number lower than 12 is not very correct and also i think i have present in this coating several organic compounds, such as Graphite, Teflon and others, that EDX cannot establish the difference between molecules (Carbon is present in all the compounds i think exist in the coating).
My question is:
 What should be a accurate and available way of determening what's present in this coating?

Best regards

Paulo Vilaça

RE: Evaluation of elements in a organic coating/paint

Fourier Transform InfraRed spectrometry (FTIR) can evaluate most organic compounds.

Inductively Coupled Plasma spectrometry (ICP) can evaluate the chemical composition of almost anything, although it can't differentiate molecules.

Gas Chromatography/Mass Spectrometry (GC/MS) can provide results for molecules.

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

RE: Evaluation of elements in a organic coating/paint

(OP)
Ths a lot CoryPad.

In my college years i've worked sometimes with FTIR (i've forfot how!!!) but it gives me a qualitative analysis of what´s present in a determined sample. For quantitative analysis is ICP (which i ddin't knew before) suitable? what technique you think would be helpfull for a quantitative analysis?

Thank you in advance and best regards

RE: Evaluation of elements in a organic coating/paint

Yes, ICP provides quanitative information, as does GC/MS.

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close