Investigation of the Wear Resistance of Hard Anodic Al2O3/IF-WS2 Coatings Deposited on Aluminium Alloys
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View abstract on PubMed
Summary
This summary is machine-generated.Adding tungsten disulfide (IF-WS2) nanopowder to Al2O3 anodic coatings significantly reduces friction and wear on aluminium alloys. This nanomodification improves tribological durability, especially under higher loads, enhancing self-lubricating properties.
Area Of Science
- Materials Science
- Tribology
- Nanotechnology
Background
- Anodic oxide layer porosity functions as a lubricant reservoir, enabling self-lubricating systems to reduce friction and wear.
- Improving tribological performance of Al2O3 anodic coatings on aluminium alloys is crucial for enhanced material durability.
Purpose Of The Study
- To investigate the effect of tungsten disulfide (IF-WS2) nanopowder modification on the tribological performance of Al2O3 anodic coatings.
- To evaluate the wear properties and friction coefficient of modified coatings under various loads.
Main Methods
- Fabrication of Al2O3 anodic coatings modified with IF-WS2 nanopowder on EN AW 5251 aluminium alloys.
- Tribological testing involving reciprocating motion without lubrication against a cast iron pin.
- Analysis of friction coefficient, wear intensity, wear scars, and surface parameters (SGP).
- Two-level factorial analysis to determine the impact of load and nanomodification on tribological properties.
Main Results
- Nanomodification with IF-WS2 significantly affected the load-bearing parameter Rk, reducing it especially under higher loads.
- Both load and nanomodification impacted the coefficient of friction, with IF-WS2 reducing it by up to 15% at 0.6 MPa.
- Improved tribological durability was observed due to reduced Rk values and lower friction coefficients.
Conclusions
- IF-WS2 nanomodification enhances the tribological durability of Al2O3 anodic coatings on aluminium alloys.
- The modified coatings exhibit improved lubricating conditions under increased contact stress.
- This study demonstrates a viable strategy for designing advanced self-lubricating materials.
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