What does this research mean for the field?

Magnetron-sputtered WS2 coatings significantly reduce friction at room temperature, but undergo progressive oxidation to WO3 starting at 300 °C, which degrades lubrication at intermediate temperatures before stabilizing at 600 °C through the formation of tribo-oxidative layers. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

Investigate the thermal stability, oxidation kinetics, mechanical properties, and tribological behavior of magnetron-sputtered WS2 coatings across temperatures ranging from room temperature to 700 °C.

September 14, 2026WearOpen Access

Thermal oxidation, mechanical response and tribological performance of WS2 coatings deposited by magnetron sputtering

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Investigate the thermal stability, oxidation kinetics, mechanical properties, and tribological behavior of magnetron-sputtered WS2 coatings across temperatures ranging from room temperature to 700 °C.
Deposited columnar WS2 coatings onto AISI D2 steel and silicon substrates using magnetron sputtering with a titanium interlayer for improved adhesion.
Tracked structural and phase evolution from room temperature to 700 °C using in situ X-ray diffraction with Rietveld refinement and scanning electron microscopy.
Measured mechanical and wear behavior using nanoindentation, scratch testing, and elevated-temperature tribological sliding assays.
Hexagonal 2H-WS2 began converting to WO3 at 300 °C, with WO3 becoming predominant above 600 °C and triggering microcracking and local delamination at 700 °C.
Nanoindentation showed a coating hardness of 6.75 ± 0.4 GPa and an elastic modulus of 121.03 ± 10.45 GPa, alongside a scratch load transition from cohesive cracking to delamination.
Interlaminar sliding yielded low friction at room temperature, while higher temperatures degraded lubrication until stabilizing at 600 °C via protective tribo-oxidative layer formation.

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Implication

Experimental study reveals temperature-dependent oxidation and friction transitions in sputtered tungsten disulfide coatings, indicating stable high-temperature tribo-oxide formation.

Cite This Study

Nango-Blanco et al. (2026) studied this question.

synapsesocial.com/papers/6aa7b3bf0926e14a848b2e9a https://doi.org/10.1016/j.wear.2026.207039

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Implication

Experimental study reveals temperature-dependent oxidation and friction transitions in sputtered tungsten disulfide coatings, indicating stable high-temperature tribo-oxide formation.

Thermal oxidation, mechanical response and tribological performance of WS2 coatings deposited by magnetron sputtering

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Implication

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Thermal oxidation, mechanical response and tribological performance of WS2 coatings deposited by magnetron sputtering

Key Points

Discussion

Implication

Cite This Study

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