What does this research mean for the field?

Increasing WC-TiC content in Ti-based coatings on Ti-6Al-4V alloy significantly improves surface microhardness and wear resistance, with 15 wt.% offering the lowest friction coefficient and 20 wt.% providing the best wear resistance and tensile response. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate the effect of varying WC–TiC contents on the microstructure, high-load wear resistance, and composite tensile performance of coatings deposited on Ti–6Al–4V alloy via plasma transferred arc welding.

September 2, 2026Journal of Vacuum Science & Technology A Vacuum Surfaces and Films

Effect of WC–TiC content on microstructure and properties of the coatings prepared by plasma transfer arc welding on Ti–6Al–4V alloy

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Authors

GLGang LiElectric Power University BHBaocun HongElectric Power University FZFengpei ZhangElectric Power University

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Implication

Experimental study demonstrates enhanced wear resistance in WC–TiC coated Ti–6Al–4V alloy, indicating plasma arc welding improves surface durability under high friction.

Key Points

To evaluate the effect of varying WC–TiC contents on the microstructure, high-load wear resistance, and composite tensile performance of coatings deposited on Ti–6Al–4V alloy via plasma transferred arc welding.
Deposited Ti-based composite coatings reinforced with 10, 15, and 20 wt. % WC–TiC onto Ti–6Al–4V substrates using plasma transferred arc welding.
Characterized phase evolution and constituent distribution using X-ray diffraction and measured cross-sectional microhardness across the coatings.
Conducted reciprocating dry sliding wear tests under a 20 N load alongside uniaxial tensile testing of coating/substrate composite specimens.
Surface microhardness increased from 335 HV in the substrate to 707 HV (10 wt. %), 757 HV (15 wt. %), and 793 HV (20 wt. %) in the coatings.
The 15 wt. % WC–TiC coating achieved the lowest mean friction coefficient of 0.133, while the 20 wt. % coating showed the lowest wear rate of 2.6 × 10⁻⁷ mm³/(N·m), marking a 39.5% reduction versus the substrate.
The 20 wt. % composite specimens displayed the highest tensile performance among coated samples, with a mean ultimate tensile strength of 552.9 MPa and total elongation of 10.60%.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/6a98131ec562ede874ec7c12 https://doi.org/10.1116/6.0005699

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Implication

Experimental study demonstrates enhanced wear resistance in WC–TiC coated Ti–6Al–4V alloy, indicating plasma arc welding improves surface durability under high friction.

Effect of WC–TiC content on microstructure and properties of the coatings prepared by plasma transfer arc welding on Ti–6Al–4V alloy

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Cite This Study

Effect of WC–TiC content on microstructure and properties of the coatings prepared by plasma transfer arc welding on Ti–6Al–4V alloy

Discussion

Member takes

Implication

Key Points

Cite This Study

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