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!
Finally got an image link.