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TBC Coating change to grey
03-06-2009, 05:49 PM
Post: #1
mehongbo Offline
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TBC Coating change to grey
Hi,
Have a question to coating experts. Why the TBC Coating (not sure but think it is 8% YSZ) changes to grey color after part aging, then change back to yellow again after TBC bake-up heat treatment?

Also, the bake-up heat treatment change the TBC more yellowish comapred to as-coated TBC, Is it because the oxidation ? What is the benefit to TBC from backup process? Have anyone seen academic papers talking about this?

Thanks in advance
Hong
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03-09-2009, 05:02 PM
Post: #2
Gordon Offline
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RE: TBC Coating change to grey
Hi Hong

colour-tbc-t-223.html may be worth reading if you have not already Smile

Regards Gordon

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www.surfaceengineer.co.uk
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