Contact US

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

Thermal Plasma Spray Excess Oxides

Thermal Plasma Spray Excess Oxides

Thermal Plasma Spray Excess Oxides

We have been trying to qualify multiple different powders for our plasma spray system. We keep getting failures dues to excess oxides. We have gone through the whole system, new grit, cleaned out blast cabinets etc. but keep getting the excess oxides. First time this has happened with multiple powders and trying multiple times. I believe a total of 10 times combined over the two powders. I hadn't found out that the air chiller they were using for cooling air was not in operation and the samples were being sprayed without the air chiller cooling air and instead chilled with filtered air directly from the air compressor. To me this has been the only change in the process so it was a red flag for me. Does anyone have experience with this process and similar issue? We cannot get the new Air chiller in until late Oct. but are in need of qualified powders. Any help is much appreciated.

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


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