Corrosion resistance of the NdFeB coated with AlN/SiC bilayer thin films by magnetron sputtering under different environments

Lei, Tao; Li, Heqin; Shen, Jiong; Qiao, Kai; Wang, Wei; Zhou, Chu Wei; Zhang, Jing; Tang, Qiong

doi:10.1016/j.jmmm.2014.10.012

Cited by 23 publications

(3 citation statements)

References 13 publications

(13 reference statements)

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“…[12][13][14] Metal coatings, such as Ni, [15][16][17][18] Ni-P, 19,20 Ni-Cu, 21,22 Zn, [23][24][25][26] are the most popular choices in the industry. So far, aqueous electroplating is still the most widely used method of metal coating deposition, [27][28][29][30] although physical vapor deposition, [31][32][33] chemical vapor deposition, 4 thermal spraying, 34 and other technologies have also developed. Unfortunately, NdFeB is prone to corrosion during the aqueous electroplating process due to exposure to the electrolytic bath solution.…”

Section: Introductionmentioning

confidence: 99%

The microstructure and protective properties of electroplating zinc films on NdFeB from a chloride-free nonaqueous bath

Xiaoya,

Yongcun,

Shusen

et al. 2024

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

The microstructure and protective properties of electroplating zinc films on NdFeB from a chloride-free nonaqueous bath

Xiaoya,

Yongcun,

Shusen

et al. 2024

RSC Adv.

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“…(3) MS uses strong magnets to confine electrons in the plasma near the surface of the target, which results in higher density plasmas and increased deposition rates of the films. Furthermore, MS makes the low temperature processing of the as-prepared sulfur electrodes possible, and it can provide compact thin films with a very good adhesion on the substrate surface. − All of these advantages make MS a very strong candidate in the event a coating technique is ever needed for the commercialization of Li–S batteries. In this work, sulfur electrodes were coated with TiO 2 thin films using MS, and various deposition times (2, 4, and 8 min) were studied in order to achieve an electrochemically stable electrode.…”

Section: Introductionmentioning

confidence: 99%

Suppression of the Shuttle Effect in Li–S Batteries via Magnetron Sputtered TiO₂ Thin Film at the Electrode–Electrolyte Interface

Zerrin

Kurban

Dickson

et al. 2020

ACS Appl. Energy Mater.

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The practical application of lithium−sulfur (Li−S) batteries is still an issue mainly due to the shuttle phenomenon originating from the migration of lithium polysulfides (LiPs) between the electrodes, which leads to low Columbic efficiency and rapid capacity fading. In this work, sulfur electrodes are coated with TiO 2 thin films via a magnetron sputtering technique at varying deposition times. A stable capacity contribution (66%) from the long-chain to short-chain LiPs reactions is achieved for the TiO 2 coated electrodes, whereas a decline from 66% to 62% is observed for the uncoated electrode. This indicates a reversible use of the long-chain LiPs for the TiO 2 coated electrodes, representing a more efficient utilization of the active material. Correspondingly, the capacity retention is improved from 68.8% to 88.5% after TiO 2 coating. The TiO 2 coated electrode delivers a capacity of 570 mAh/g after 120 cycles at 0.1 C, which is 40% greater than that of the uncoated electrode. Similarly, the TiO 2 coated electrode delivers a capacity of 427 mAh/g after 170 cycles at 0.5 C, which is 67% greater than that of the uncoated electrode. Analysis of the binding energies of LiPs that are adsorbed on the TiO 2 surface by theoretical calculations shows that strong Li−O bonds dominate the interactions between the LiPs and TiO 2 layer. It is suggested that magnetron sputtered TiO 2 at the electrode−electrolyte interface can be effective in suppressing the shuttle effect due to the strong polysulfide adsorbing properties of the TiO 2 thin film.

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“…[10][11][12] Compared with surface coatings, the application of alloy elements addition was limited because only a few alloy elements marginally improved the corrosion resistance at a substantial compromise of magnetic properties and some magnetic properties could be considerably deteriorated. 13,14 Coatings were widely applied due to more excellent anticorrosion performance, lower cost and simple process. Currently, electroless Ni-P coatings as a protective film became potential application in the aspect of protecting magnets for their outstanding anticorrosion and mechanical performance compared to that of other coatings.…”

Section: Introductionmentioning

confidence: 99%

Effects of Y³⁺ on properties of electroless NiYP coatings

Wang

Zhang

et al. 2016

Surface Engineering

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NiYP alloy coatings were prepared on the surface of sintered NdFeB magnets by electroless composite plating. The effects of Y 3þ concentration on the deposition rate, surface morphologies, element contents and corrosion resistance were investigated. The results showed that the deposition rate of NiYP alloy coatings decreased with the increasing Y 3þ concentration. A thin NiYP film with adsorbed rare earth yttrium could be formed at higher concentration, which reduced the number of catalytic sites on the surface of intered NdFeB magnets. With the increase in Y 3þ concentration up to 6 mmol L 21 , the self-corrosion potential E corr of the electroless NiYP coatings in 3.5%NaCl solution increased from 2672 to 2513 mV, and the self-corrosion current density I corr decreased from 28.81 to 1.15 mA cm 22 . The mechanisms of corrosion resistance of the electroless NiYP coatings modified by Y 3þ addition were discussed.

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Corrosion resistance of the NdFeB coated with AlN/SiC bilayer thin films by magnetron sputtering under different environments

Cited by 23 publications

References 13 publications

The microstructure and protective properties of electroplating zinc films on NdFeB from a chloride-free nonaqueous bath

The microstructure and protective properties of electroplating zinc films on NdFeB from a chloride-free nonaqueous bath

Suppression of the Shuttle Effect in Li–S Batteries via Magnetron Sputtered TiO₂ Thin Film at the Electrode–Electrolyte Interface

Effects of Y³⁺ on properties of electroless NiYP coatings

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Corrosion resistance of the NdFeB coated with AlN/SiC bilayer thin films by magnetron sputtering under different environments

Cited by 23 publications

References 13 publications

The microstructure and protective properties of electroplating zinc films on NdFeB from a chloride-free nonaqueous bath

The microstructure and protective properties of electroplating zinc films on NdFeB from a chloride-free nonaqueous bath

Suppression of the Shuttle Effect in Li–S Batteries via Magnetron Sputtered TiO2 Thin Film at the Electrode–Electrolyte Interface

Effects of Y3+ on properties of electroless NiYP coatings

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Product

Resources

About

Suppression of the Shuttle Effect in Li–S Batteries via Magnetron Sputtered TiO₂ Thin Film at the Electrode–Electrolyte Interface

Effects of Y³⁺ on properties of electroless NiYP coatings