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


Common Parylene coating problems.

Common Parylene coating problems.

Common Parylene coating problems.

Hi all

We have a parylene coating system and as of late we have seen a steady downward trend in our coating thickness, we should be running at about 1.1um to 1.3um on our parts but we are seeing below 1.0um

we have had a number of small leaks in the system which have been fixed, we still get a leak rate of about 0.012 ub/s and a base vacuum of 0.020 ubs with nothing in the chamber.

Just wondering if anyone has had the same type of problems or if someone has a kind of cheat sheet with known issues.

one thing I do know is cleanliness is next to godliness when it comes to Parylene coating.

Also has anyone done any work into re-absorption rates of materials after they have been de-gassed.

Many Thanks


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!


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