Influence of intercolony boundary on corrosion behavior of electrodeposited Ni–W alloy for electronic connector applications

Long, Xiaoping; Hang, Tao; Guo, Yukun; Li, Ya; Wu, Yunwen; Ling, Huiqin; Hu, Anmin; Li, Ming

doi:10.1016/j.matchemphys.2019.121989

Cited by 7 publications

(2 citation statements)

References 32 publications

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“…The result of EIS was similar to that of the polarization curve, and the samples heat treated at 400 • C and 600 • C showed better corrosion resistance, attributed to the precipitates, such as Ni 4 W and Ni 6 W 6 C, making the coating denser. Long et al [37] revealed that the corrosion resistance of the Ni-W alloy is affected by the boundary of cellular crystal clusters. The corrosion resistance of the coating worsens with a high density of intercluster boundary (DIB).…”

Section: Corrosion Resistancementioning

confidence: 99%

The Effect of Heat Treatment on Phase Structure and Mechanical and Corrosion Resistance Properties of High Tungsten Ni-W Alloy Coating

Xu,

Wang,

Sheng

et al. 2023

Coatings

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The present study investigated the surface morphology, phase composition, mechanical properties, and corrosion resistance of Ni-W alloy coatings prepared under current densities of 1–5 A/dm², after undergoing heat treatment at 400 °C, 600 °C, and 900 °C. The grain size of the as-plated Ni-W alloy coating was below 10 nm. After heat treatment at different temperatures, the grain size increased, reaching a maximum value of around 30 nm at 900 °C. Heat treatment crystallized and altered the structure of the coating. Different heat treatment temperatures yielded different precipitates, including Ni4W, Ni6W6C, and WC. The highest coating hardness (820–940 Hv) was achieved at 400 °C, while the best corrosion resistance was achieved at 600 °C. The precipitation hardening phase can be obtained by proper heat treatment temperature, yielding the desired properties of the composite coating.

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Section: Corrosion Resistancementioning

confidence: 99%

The Effect of Heat Treatment on Phase Structure and Mechanical and Corrosion Resistance Properties of High Tungsten Ni-W Alloy Coating

Xu,

Wang,

Sheng

et al. 2023

Coatings

View full text Add to dashboard Cite

show abstract

“…Excessive internal stress can cause bending of the substrate or cracking of the coating, or even falling off, thus affecting the corrosion resistance and mechanical properties of the coating [15]. The internal stress of the coating is divided into compressive stress and tensile stress [16][17][18]. The coating generates compressive stress during the electrodeposition reaction due to the difference between the thermal expansion coefficients of the substrate and the coating [19,20].…”

Section: Introductionmentioning

confidence: 99%

Internal stress of high tungsten content Ni-W alloy coatings

Xu,

Wang,

Sheng

et al. 2023

Surface Engineering

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This study investigates the impact of current density on the microstructure, composition, and internal stress of Ni-W alloys electrodeposited in a citrate system. Using XRD, SEM, EDS, TEM, and XPS, it was found that tungsten serves as a solute in a Ni-W FCC structure oriented in the (111) direction. Increasing current density led to higher tungsten content and current efficiency. The addition of 2-Butyne-1,4-diol altered the carbon content, significantly reducing internal stress by promoting carbide formation near grain boundaries, which prevented coating shrinkage during hydrogen escape. This carbon enrichment improved the alloy's corrosion resistance.

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Superior corrosion and wear resistance of pulse plated Ni–W–B/SiC composite coatings

Ahmadiyeh

Rasooli

Hosseini

et al. 2021

Materials Chemistry and Physics

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Influence of intercolony boundary on corrosion behavior of electrodeposited Ni–W alloy for electronic connector applications

Cited by 7 publications

References 32 publications

The Effect of Heat Treatment on Phase Structure and Mechanical and Corrosion Resistance Properties of High Tungsten Ni-W Alloy Coating

The Effect of Heat Treatment on Phase Structure and Mechanical and Corrosion Resistance Properties of High Tungsten Ni-W Alloy Coating

Internal stress of high tungsten content Ni-W alloy coatings

Superior corrosion and wear resistance of pulse plated Ni–W–B/SiC composite coatings

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