Effect of nitriding pretreatment on adhesion and tribological properties of AlCrN coating
| Autor: | F.O. Ramírez-Reyna, R.C. Morón, G.A. Rodríguez-Castro, I. Arzate-Vázquez, A. Meneses-Amador, U. Figueroa-López |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Mechanical Engineering 02 engineering and technology Adhesion Tribology Nitride engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Coating Mechanics of Materials Scratch engineering General Materials Science Adhesive Composite material 0210 nano-technology Layer (electronics) computer Nitriding computer.programming_language |
| Zdroj: | Materials Letters. 284:128931 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2020.128931 |
| Popis: | In this work, a gas nitriding pretreatment (iron nitrides layer) formed on the surface of 4140 steel is proposed to improve the adhesion and wear resistance of the AlCrN coatings deposited by arc cathodic PVD. AlCrN, FexN and AlCrN/FexN (duplex) systems were formed with total thicknesses of 3, 10 and 13 µm, respectively. Using spherical instrumented indentation, hardness more than 22 GPa were determined for the AlCrN-based coatings, meanwhile 10 GPa for the iron nitrides. The adhesion of the coatings were evaluated by progressive load scratch tests (PLST) where the duplex coating reduced the CoF and changed the failure mode from adhesive to cohesive for the AlCrN coating. The AlCrN/FexN coating exhibited the lowest specific wear rate and the severity of damage was reduced in multipass scratch wear tests (MPST). The duplex system presented the best adhesion and wear resistance. |
| Databáze: | OpenAIRE |
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