Ni/Cr was pre coated to work as bond coat for good adhesion between coating and the substrate material.
Apart from different loading conditions, the main difference between these applications is the substrate material, which is nickel-based for turbines and copper-based for rocket engines.
The large difference in melting point between the HEA and the substrate material (AZ91D), and the limited reaction and the lack of fusion between the HEA and Mg have made it possible that a metal particles reinforced AZ91D composite material was produced.
In order for this technique to perform effectively, bond between the NSM reinforcement and the substrate material is a critical issue.
But the substrate material had to be heat-resistant; circuits are baked at temperatures upward of two thousand degrees Fahrenheit.
The cladding is air and the substrate material is SiO2.
Both coatings showed no crack propagation along the interface between coatings and the substrate materials.
This depends on the differences in the adhesion forces acting between the metallic particles and the substrate materials.
Before the substrate materials leave the Dirty Room, they go through the steam pasteurizer, which eliminates contaminants and spores.
Glass was used as the substrate materials.
