Plasma Nickel-Iron-Aluminum
A&A Coatings Nickel-Iron Aluminum Composite powder is specially designed to produce coatings which not only exhibit excellent self-bonding properties but also provide a significant improvement in machinability, wear and oxidation resistance.
The material undergoes an exothermic reaction during spraying and forms a strong metallurgical bond with the base metal. Coatings of Nickel-Iron-Aluminum relatively hard and can be machined using standard carbide tools to a very fine finish.
Additionally, these coatings are dense and can be used for oxidation resistant applications up to 815°C (1500°F). This makes Nickel-Iron-Aluminum a good undercoat for ceramic, nickel chromium and stainless steel type coatings in this environment.
Material Powder Characteristics
| Typical Composition: | Iron 52% Nickel 38% Aluminum 10% |
| Typical Size Range: | -120 mesh +15 microns |
Physical Properties of Coating
| Texture, as sprayed, (microinches aa): | 400 – 800 |
| Finish, machined (microinches aa): | 20 – 40 |
| Macrohardness: | Rb75-85 |
| Cross-Sectional Hardness (DPH300): | 250 |
| Density (g/cc): | 6.8 |
| Coating Weight (lb/ft2/.001″): | .035 |
| Bonding (on low carbon steel, psi): | 5,000 |
Thickness Limitation
There is no apparent thickness limitation. Nickel-Iron-Aluminum coatings can be applied thick without cracking, with minimum dependence on technique and temperature control.
Surface Preparation
A&A Coatings Plasma Sprayed Nickel-Iron-Aluminum can be applied to most substrates which have been cleaned to remove surface oxides. This cleaning is accomplished with a light grit blast. Additionally, a “Bond coat” is required in some cases. Please contact us for substrate specific requirements
Finishing
A&A Coatings Plasma Sprayed Nickel-Iron-Aluminum coatings are best finished by machining. If you will be finishing our coating at your facility, please contact us for more information.