The cohesive strength of the coating at critical length (ℓ c) can be expressed as (3).
Estimated bond strength of the coating is at least approximately 20 MPa or higher irrespective of Si content.
Post heat treatment at 850 °C was performed to improve the adhesion strength of the coating.
The performance of the coating is expressed in terms of the cohesive strength of the coating.
The bonding strength of the coating and substrate is superior to that of the coating itself.
This load required to initiate fracture in the coating provides a measure of the strength of the coating.
The adhesion strength of the coating is determined with the pull-off device (DEFELESCO).
As far as you're concerned, your coats are "at the coat check".
The remarkable decrease in the oxide content and the porosity of bond coat, the increase in the "vertical" porosity of top coat and the improvement in the bonding strength at the bond coat/top coat interface appeared to contribute to the prolonged lifetime.
A combination of high damage resistance and good adhesion strength was observed for the coating annealed at an intermediate temperature of 600 °C.
The average value of adhesion strength at the coating/substrate interface is 87.8 N, at which the NbC coating (thickness of 21.3 μm) is delaminated from the substrate.
