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May 22, 2026CoatingsOpen Access

Tribological Performance and Microstructural Analysis of NiAl–Inconel 625 Composite Coating Produced by Wire Arc Spraying

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Authors

KAKonstantinos AntonopoulosHellenic Airforce General HospitalATAthanasios TzanisInasco (Greece)DDDirk DreesFalex Tribology (Belgium)

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Implication

Randomized trial investigates tribological performance of Ni–5Al/Inconel 625 coatings, indicating enhanced wear resistance.

Key Points

  • This study aims to evaluate the microstructural and tribological performance of Ni–5Al/Inconel 625 composite coatings for economical applications.
  • Composite coatings deposited on AISI 1025 steel using wire arc spraying
  • Microstructural characterization via optical and scanning electron microscopy
  • Tribological performance assessed using ball-on-disk tests
  • Polished coatings showed a specific wear rate of approximately 3 × 10−5 mm3/Nm, significantly lower than the as-prepared rate of 9.3 × 10−5 mm3/Nm
  • Post-deposition polishing reduced surface roughness from 11.9 µm to 2.12 µm, resulting in improved wear resistance
  • Dominant wear mechanisms included abrasion and interlamellar decohesion, with low porosity levels observed in the coatings

Cite This Study

Antonopoulos et al. (2026) studied this question.

synapsesocial.com/papers/6a0ff351d674f7c03778bda8https://doi.org/10.3390/coatings16050609
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Also Consider

Synapse has enriched one closely related paper. Consider it for comparative context:

  1. 1Improving oxidation resistance of wire arc additive manufactured Inconel 625 Ni-based superalloy by pack aluminizing2023 · 117 citations