×
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!
  • Students Click Here

*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

Jobs

alpha or beta alumina

alpha or beta alumina

alpha or beta alumina

(OP)
I have an alumina ceramic sample.  I would like to know what phase(s) is present (alpha, beta, etc?).  How would one go about determining this other than an XRD technique?   

RE: alpha or beta alumina

Beta is extremely hydroscopic. If it has not been kept frozen or in a controlled atmosphere it will crumble in a matter of weeks.  If it's been around for a while it's most likely not beta.

RE: alpha or beta alumina

(OP)
Ah, that is very interesting.  Thank you for your reply!  My material is very well intact.  I will be attempting to verify my material via an EBSD technique.

RE: alpha or beta alumina

(OP)
After many months, I found that EBSD is a viable technique to characterize my material. It so happens that the sample was 99.7% alpha-alumina (and 0.03 wt% beta) and no gamma.

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!


Resources