Improving oxidation resistance and thermal insulation of thermal barrier coatings by intense pulsed electron beam irradiation

Mei, Xianxiu; Liu, Xiaofei; Wang, Cunxia; Wang, You‐Nian; Dong, C.

doi:10.1016/j.apsusc.2012.10.011

Cited by 20 publications

(3 citation statements)

References 17 publications

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“…During the first cathodic scan, one strong reduction peak between 1.0 and 0.37 V can be attributed to the reduction of Co 2+ to metallic Co during the insertion of Li + , lithium ion insertion into the carbon and also formation of the solid electrolyte interface (SEI) film 29 . In the following cathode scanning, the cathodic peaks shift to higher voltages at 1.32 and 0.97 V, which is attributed to the reduction of CoO to metallic Co and the formation of SEI film resulting from the electrochemically driven electrolyte reduction 30,34,35 . In anodic scans, the peak at ≈1.4 V can be attributed to the partial decomposition of SEI film and the extraction of Li + from carbon 36,37 .…”

Section: Resultsmentioning

confidence: 98%

N-doped Carbon Coated CoO Nanowire Arrays Derived from Zeolitic Imidazolate Framework-67 as Binder-free Anodes for High-performance Lithium Storage

Wang

Yan

Guo

et al. 2019

Sci Rep

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To realize large lithium storage capacity and excellent rate capability lithium ion batteries, highly electrochemically active materials and rational design of structure are desirable. Here, we successfully synthesized CoO@N-doped carbon nanowire arrays derived from zeolitic imidazolate frameworks-67 (ZIF-67) on Ni foam (denoted as CoO@N-C/NF). Each CoO@N-C nanowire was built up of numerous ordered in-situ nitrogen-doped carbon coated CoO nanoparticles (around 20 nm) after annealing treatment. Benefited from the unique structural features, when served as anode for lithium ion batteries, the CoO@N-C/NF exhibit superior initial Coulombic efficiency of 78.04%, and excellent electrochemical cyclability (1884.1 mAh g −1 at 1 A g −1 after 100 cycles) and good rate capability (1169.2 mAh g −1 at the rate of 5000 mA g −1 ). To our knowledge, this is the highest capacity with similar electric current density that has been reported for CoO-based materials. Our results indicate that the CoO@N-C/NF electrode without any auxiliary materials are expected to open up new opportunities for CoO-based material to power electronic devices.

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Section: Resultsmentioning

confidence: 98%

N-doped Carbon Coated CoO Nanowire Arrays Derived from Zeolitic Imidazolate Framework-67 as Binder-free Anodes for High-performance Lithium Storage

Wang

Yan

Guo

et al. 2019

Sci Rep

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“…In a high-temperature environment, the dense remelting layer can prevent oxygen from entering the interior of the coating. In a thermal barrier coating system, the thickness of the TGO layer can be reduced to decrease the stress in the coating, thus prolonging the service life of the coating [14,27]. The thickness of the remelted layer was lower than the theoretical calculated value because the temperature of the NiCrAlY coating reached the boiling point when the energy density was up to 18 J/cm 2 , and the influence of mass loss could not be considered in the temperature field calculated by the finite element method; therefore, the theoretical calculated value was higher than the measured remelted layer thickness.…”

Section: Influence Of a High-current Pulsed Electron Beam Irradiation...mentioning

confidence: 99%

Enhancing the Oxidation Resistance of NiCrAlY Bond Coat by High-Current Pulsed Electron Beam Irradiation

Mei

Zhang

et al. 2021

Coatings

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The bond coat of a NiCrAlY thermal barrier coating plays an important role in solving the thermal expansion mismatch between a metal matrix and a ceramic layer and in improving the oxidation resistance of the whole thermal barrier coating. However, the NiCrAlY bond coat prepared by low-pressure plasma spraying is not conducive to its oxidation resistance because its lamellar structure is loose, porous and the surface is rough. To improve the oxidation resistance of the bond coat, the NiCrAlY bond coat prepared by plasma spraying was modified by high-current pulsed electron beam with different energy densities. Under the electron beam irradiation, the surface of the coating became smooth, and there was a 3–5 μm thick remelting layer on the surface. Under the irradiation, the thickness of the thermal growth oxide layer decreased, and the oxidation resistance was significantly improved, the oxidation product being mainly Al2O3.

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“…Compared to widely used laser, plasma, and ion beam treatments, the HCPEB provides narrower energy distribution, better surface finish and wider energy density range [1][2][3][4] . With proper selection of operation parameters, various surface modification processes like surface quenching, annealing, impulse hardening, alloying and amorphization can be achieved by HCPEB treatments 5,6 .…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Aluminized Cu-10Fe Alloy by High Current Pulsed Electron Beam

et al. 2016

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A Cu-10Fe alloy with magnetron sputtered Al films was irradiated by high current pulsed electron beam (HCPEB) with various pulse numbers, next changes of its microstructure and corrosion property were investigated. Compared with the initial sample, microhardness and corrosion resistance of the aluminized Cu-10Fe alloys after the HCPEB treatment are remarkably improved with increasing pulse numbers. This improvement could be attributed to formation of Al 2 Cu intermetallic compounds, occurrence of liquid phase separation and grain refinement in the surface layer of the Cu-10Fe alloy during the process of rapid remelting and solidification induced by the HCPEB treatment.

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Improving oxidation resistance and thermal insulation of thermal barrier coatings by intense pulsed electron beam irradiation

Cited by 20 publications

References 17 publications

N-doped Carbon Coated CoO Nanowire Arrays Derived from Zeolitic Imidazolate Framework-67 as Binder-free Anodes for High-performance Lithium Storage

N-doped Carbon Coated CoO Nanowire Arrays Derived from Zeolitic Imidazolate Framework-67 as Binder-free Anodes for High-performance Lithium Storage

Enhancing the Oxidation Resistance of NiCrAlY Bond Coat by High-Current Pulsed Electron Beam Irradiation

Surface Modification of Aluminized Cu-10Fe Alloy by High Current Pulsed Electron Beam

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