| abstract |
The composite can include a substrate and a transition coating overlying the substrate and comprising at least one of zirconium oxide, hafnium oxide, or a combination thereof. The conversion coating is a zirconia or hafnia-based complex compound obtained by reacting at least one of a zirconium ion source, a hafnium ion source, or a combination thereof with a chelating compound in one reaction and another chelating compound in another reaction / RTI > |