Metallography for Metco 106F
09-14-2018, 03:03 PM, (This post was last modified: 09-14-2018, 03:19 PM by T.Ann.)
#1
Metallography for Metco 106F
We are attempting to spray Metco 106F which is new for our company. The powder is a 96% Cr2O3 powder with 3% TiO2. The metallography is showing a globular dark phase which resembles oxide? I cannot find any micrographs of what the metallography should look like and this darker phase comprises about 1% of the area. I'm trying to figure out if this is intrinsic to the coating or if it is some type of contaminant. I tried to insert my photomicrograph but cannot attach. Could someone please reply with a photo of a typical microstructure. Thank you!

[Image: tann1-tn.jpg]

Finally got an image link.
Reply
09-14-2018, 04:37 PM,
#2
RE: Metallography for Metco 106F
The dark areas are no different than water or alcohol, that remained on the cross-cut surface. These areas are transparent, you can see normal coating structure underneath.
Reply
09-14-2018, 05:21 PM,
#3
RE: Metallography for Metco 106F
Hi T.Ann

Sign0016 to the Surface Engineering forum.

I think these odd inclusions are fairly typical for Metco 106F coatings and are just other oxide phases.

Cheers

Gordon
Reply
09-19-2018, 04:01 PM, (This post was last modified: 09-19-2018, 04:02 PM by T.Ann.)
#4
RE: Metallography for Metco 106F
No, they are not water or alcohol. They are melted and part of the coating structure.
(09-14-2018, 04:37 PM)Vadim Verlotski Wrote: The dark areas are no different than water or alcohol, that remained on the cross-cut surface. These areas are transparent, you can see normal coating structure underneath.


Thank you!
(09-14-2018, 05:21 PM)Gordon Wrote: Hi T.Ann

Sign0016 to the Surface Engineering forum.

I think these odd inclusions are fairly typical for Metco 106F coatings and are just other oxide phases.

Cheers

Gordon

Reply




Possibly Related Threads…
Thread Author Replies Views Last Post
  Metallography Evaluation vcduramais 1 3,043 03-15-2021, 05:13 PM
Last Post: EmilAV



Users browsing this thread: 1 Guest(s)





Surface Engineering Forum Sponsor - Alphatek Hyperformance Coatings Ltd