Parameters that affect the hardness of Metco 204BNS TBC
02-09-2012, 07:55 AM,
#1
Parameters that affect the hardness of Metco 204BNS TBC
Hi

Can I find out what are the parameters that will affect the macro hardness of Metco 204BNS TBC coating?
I have sprayed a coupon with microstructure to be within limits but hardness is slightly high at average of 83HR15N

Thanks

thezombiesprayer
Reply
02-09-2012, 05:36 PM,
#2
RE: Parameters that affect the hardness of Metco 204BNS TBC
Hi thezombiesprayer

A high macro-hardness is probably an indication of higher coating density. Cutting back a little on secondary plasma gas or increasing spray distance may have the desired effect.

Make sure you have sufficient coating thickness/surface finish to ensure a true reading from your superficial Rockwell hardness test before making any parameter changes though Wink
Reply
02-10-2012, 02:09 AM,
#3
RE: Parameters that affect the hardness of Metco 204BNS TBC
(02-09-2012, 05:36 PM)Gordon Wrote: Hi thezombiesprayer

A high macro-hardness is probably an indication of higher coating density. Cutting back a little on secondary plasma gas or increasing spray distance may have the desired effect.

Make sure you have sufficient coating thickness/surface finish to ensure a true reading from your superficial Rockwell hardness test before making any parameter changes though Wink

Hi Gordon
Thanks for the advice! I shall give this a try with my new coupons.
I didn't have much experience with ceramic coatings, so looks like the parameters that can affect the hardness of a coating is similar to those metallic or polyester coatings. I used to tweak on the secondary gas when I deal with metallic coatings.

Thanks

thezombiesprayer
Reply




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