Preparation, corrosion resistance and mechanical properties of electroless Ni-W-P-eGO composite coatings

Zhong, Jingxiang; Zhang, Shihong; He, Yi; Zhang, Zhifei; Li, Hongjie; Song, Ruxia

doi:10.1016/j.colsurfa.2022.129704

Cited by 9 publications

(5 citation statements)

References 44 publications

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“…This value is more than 3 times that of the Ni–W–B coating. The larger the arc is, the greater the resistance, and the better the corrosion resistance . The impedance modulus | Z | 0.01Hz and phase angle are generally used as indicators to evaluate the corrosion resistance of a coating, as shown in the Bode diagram.…”

Section: Resultsmentioning

confidence: 99%

“…The larger the arc is, the greater the resistance, and the better the corrosion resistance. 56 The impedance modulus | Z| 0.01Hz and phase angle are generally used as indicators to evaluate the corrosion resistance of a coating, as shown in the Bode diagram. The greater the value of |Z| 0.01Hz is, the stronger the corrosion resistance of the coating.…”

Section: ■ Experimentsmentioning

confidence: 99%

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Enhancement of the Wear Resistance and Corrosion Resistance of Electroplated Ni–W–B Coatings Using PDA-Functionalized VC

Gong,

He,

Yan

et al. 2024

Langmuir

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In this study, vanadium carbide (VC) was used as the raw material to synthesize PDA-functionalized VC (P-VC). VC and P-VC were added as nanoreinforced materials to the Ni–W–B coating. The effects of the two nanomaterials on the morphology, wear resistance, and corrosion resistance of the Ni–W–B coatings were investigated and compared. The experimental results show that the surface of the Ni–W–B/P-VC coating is denser and more uniform than that of the Ni–W–B and Ni–W–B/VC coatings, and there are no obvious defects on the surface. According to the hardness test, the Ni–W–B/P-VC coating reaches the highest microhardness of 887.1 HV. According to the friction and wear tests, the Ni–W–B/P-VC coating has the shallowest scratches, the lowest average friction coefficient (COF = 0.274), and the lowest wear rate (9.578 × 10–8 mm2/N). The corrosion resistance is the best, the corrosion rate is 0.0456 mm/y, and the impedance value Rt reaches 14,501 Ω·cm2.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Experimentsmentioning

confidence: 99%

Enhancement of the Wear Resistance and Corrosion Resistance of Electroplated Ni–W–B Coatings Using PDA-Functionalized VC

Gong,

He,

Yan

et al. 2024

Langmuir

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“…Ensuring a high surface hardness of the coating is one of the best ways to improve the tool life. Generally speaking, under constant conditions, the higher the hardness of the material or surface, the longer the service life of the tool [ 26 , 27 ]. The hardness ( H ) of different kinds of coatings are shown in Figure 9 a, and elastic modulus ( E ) of different kinds of coatings are shown in Figure 9 b.…”

Section: Resultsmentioning

confidence: 99%

Effect of Tool Coatings on Machining Properties of Compacted Graphite Iron

Tan

et al. 2022

Micromachines

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Compacted graphite iron (CGI) has become the most ideal material for automotive engine manufacturing owing to its excellent mechanical properties. However, tools are severely worn during processing, considerably shortening their lifespan. In this study, we prepared a series of cemented carbide-coated tools and evaluated their coating properties in cutting tests. Among all tested coatings, PVD coating made of AlCrN (AC) presented with the best surface integrity and mechanical properties, achieving the best comprehensive performance in the coating test. The AC-coated tool also exhibited the best cutting performance at a low speed of 120 m/min, corresponding to a 60% longer cutting life and the lowest workpiece surface roughness relative to other coated tools. In the cutting test at a high speed of 350 m/min, the CVD double-layer coated tool (MT) with a TiCN inner layer of and an Al2O3 outer layer had a 70% longer cutting life and the lowest workpiece surface roughness relative to other coated tools.

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“…The maximum average microhardness value is observed for the Mo concentration of 32 g L 21 (;2.5 times higher than the uncoated thrust plate). From the previous researches related to Ni-P electroless coating performed by Zhong et al, 20 Shozib et al, 21 and Touri and Monirvaghefi, 22 it is found that improvement in microhardness is about 1.5 times with respect to the substrate materials. It is notable that the present study could reflect the improvement in microhardness by Ni-Mo-P electroless coating by factor of 2.5 of the substrate, which is due to higher intensity of hard phases as compared to others.…”

Section: Microhardness Testingmentioning

confidence: 95%

“…TaC, a refractory ceramic material with high hardness and toughness, improves the thermal oxidation and corrosion resistance of the Cu substrate by forming an amorphous interface between the Ni-P coating matrix and TaC particle. While conducting their investigation, Zhong et al 20 experienced that addition of W and eGO (edge graphene oxide) into the Ni-P coating matrix enhances the corrosion and wear property of the N80 steel. The uniform distribution of these nanoparticles eliminates the surface defects that improves the flatness of the coating layer, which acts as interlayer solid lubricant.…”

Section: Introductionmentioning

confidence: 99%

Ni-Mo-P coatings on thrust plate of a gear pump to enhance its mechanical, tribological, and corrosion resistance properties

Sharma

Kumar

Das

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part B:

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Thrust plate in an external gear pump is one of the most important element which aligns the rotating gears and prevents the leakage through lateral clearances between rotating and non-rotating surfaces. It acts as a sacrificing element and fails frequently under fluctuating load pressure condition. The present research aims at enhancing the relative mechanical and tribological properties of the sacrificial thrust plate through electroless Ni-Mo-P coatings. Molybdenum (Mo) concentration in the electroless bath were tested for their effects on surface morphology, hardness, phase formation, wear rate, and wettability. A hard and self-lubricating layer (Al, Ni, Si, and Mo phases) on the coated surface was indicated by the compositional analysis performed using EDS and XRD. Results show that the microhardness of the coated surfaces has increased significantly by 149.5% (maximum hardness ~ 183.45 HV0.2) for 32 g L−1 Mo concentration. With 32 g L−1 Mo, the maximum coating thickness and water contact angle were 58 µm and 111°, respectively. The base material’s coefficient of friction was 0.5, whereas it was 0.25, 0.10, 0.06, and 0.03 for the samples made with 8, 16, 24, and 32 g L−1 Mo concentration, respectively. Compared to the uncoated sample, the maximum decrement in corrosion rate was found to be about six to seven times in the coated sample (with 32 g L−1 Mo). As a result, the developed coating surfaces provide hardness, lubricity, hydrophobicity, corrosion, and wear resistance simultaneously. The methodology of surface treatment can be used to modify the surface of critical hydraulic components having significant wear like in case of hydraulic cylinders.

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Preparation, corrosion resistance and mechanical properties of electroless Ni-W-P-eGO composite coatings

Cited by 9 publications

References 44 publications

Enhancement of the Wear Resistance and Corrosion Resistance of Electroplated Ni–W–B Coatings Using PDA-Functionalized VC

Enhancement of the Wear Resistance and Corrosion Resistance of Electroplated Ni–W–B Coatings Using PDA-Functionalized VC

Effect of Tool Coatings on Machining Properties of Compacted Graphite Iron

Ni-Mo-P coatings on thrust plate of a gear pump to enhance its mechanical, tribological, and corrosion resistance properties

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