| DOI | Resolve DOI: https://doi.org/10.1007/s11665-023-08485-1 |
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| Author | Search for: Lothrop, Alex; Search for: Yang, Qi1; Search for: Huang, Xiao; Search for: Wu, Xiaohua2 |
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| Affiliation | - National Research Council of Canada. Aerospace
- National Research Council of Canada. Quantum and Nanotechnologies
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| Format | Text, Article |
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| Subject | cathodic arc evaporation; erosion; high-entropy nitride coatings; thermal stability; wear |
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| Abstract | High-entropy alloy nitride (HEN) coating of (AlCrTiVZr)N was deposited onto 17-4PH stainless steel substrates using the cathodic arc evaporation (CAE) technique. The composition and resulting microstructure were analyzed, and key mechanical properties including solid particle erosion resistance and sliding wear resistance were measured in the as-deposited condition. The coating had a relatively rough surface and contained small spherical droplets and large splats throughout the coating thickness. It had a single-phased solid solution B1 nitride phase with a preferred (111) orientation. The coating retained the as-deposited microstructure upon high temperature annealing, but experienced nitride phase decomposition at a temperature 800 °C or above. The hardness of the as-deposited nitride fell into the range of 27.5 ± 2.10 GPa and its elastic modulus was 284 ± 23 GPa. Dry sliding wear tests revealed the higher wear rates of the coating when compared with the wear rates of TiN coatings under various testing conditions. The coating had an erosion rate that increased with the impingement angle and demonstrated a combination of ductile and brittle erosion damage modes. Comparing to the CAE deposited TiN coating, the HEN nitride coating showed a lower wear and erosion resistance, which is attributed to the presence of a large quantity of defects in the coating. Reducing number of droplets/splats becomes very important for having better high-entropy nitride coating quality and hence the better coating performance against wear and erosion. |
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| Publication date | 2023-07-14 |
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| Publisher | Springer
ASM International |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 5aa2a47d-17e0-4515-b624-d0de8d31cbc6 |
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| Record created | 2024-07-08 |
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| Record modified | 2024-07-08 |
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