The influence of anomalous codeposition on few coating alloys properties

Porto, Mariana Borges; Bellia, Victor de Lima; Nepel, Thayane Carpanedo de Morais; Moreira, Fernanda Dos Santos; Neto, Ambrósio Florêncio de Almeida

doi:10.1016/j.jmrt.2019.07.068

Cited by 6 publications

(5 citation statements)

References 22 publications

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“…Therefore, deposition of Cu is much higher than that of Bi, which leads to a high Cu:Bi ratio in the ternary alloys. It can be realized that a possible codeposition mechanism could be anomalous, which reduces the composition of Bi in the film when increasing the Cu concentration. , Therefore, deposition of Bi inhibits in the presence of Cu as observed in the EDS data analysis. However, further investigations are needed to understand the anomalous codeposition phenomenon in the complicated ternary alloy system.…”

Section: Resultsmentioning

confidence: 99%

“…So far, two kinds of codeposition mechanisms have been reported, that is, normal and anomalous, to form metallic alloys. 36 …”

Section: Introductionmentioning

confidence: 99%

“…So far, two kinds of codeposition mechanisms have been reported, that is, normal and anomalous, to form metallic alloys. 36 The electrical and thermal properties of Bi 2 Te 3 thin films mainly depend on their compositions and stoichiometry. Alternatively, these fundamental thermoelectric features can be tuned by adding different amounts of extra atoms in the Bi 2 Te 3 crystal structure.…”

Section: Introductionmentioning

confidence: 99%

“…Following the traditional electrodeposition process, the simultaneous codeposition greatly influences the structure and composition of metallic alloys. So far, two kinds of codeposition mechanisms have been reported, that is, normal and anomalous, to form metallic alloys …”

Section: Introductionmentioning

confidence: 99%

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Amorphous Framework in Electrodeposited CuBiTe Thermoelectric Thin Films with High Room-Temperature Performance

Padmanathan

Lal

Gautam

et al. 2021

ACS Appl. Electron. Mater.

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Bismuth telluride-based alloys are the most efficient thermoelectric materials near room temperature and widely used in commercial thermoelectric devices. Nevertheless, their thermoelectric performance needs to be improved further for wide-scale implementation either as a thermoelectric generator or cooler. Here, we propose a simultaneous codeposition of CuBiTe thin films and their phase transition strategy via the traditional electrodeposition process. With just 13 atom % Cu doping, crystalline-to-amorphous phase transformation resulted for the electroplated CuBiTe alloy. A close look at the alloy composition revealed spike-shaped nanocrystalline Bi 2 Te 3 embedded in the CuBiTe amorphous matrix. Our result shows an exceptionally high power factor (3.02 mW m –1 K –2 ), which comes from the enhanced Seebeck coefficient (−275 μV K –1 ) and high electrical conductivity (3.99 × 10 4 S m –1 ) of CuBiTe films. Therefore, it can be suggested that the adopted strategy to form a unique nanocrystallite-embedded amorphous framework provides a platform to develop next-generation high-performance thermoelectric materials with an extraordinary power factor.

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Section: Resultsmentioning

confidence: 99%

“…So far, two kinds of codeposition mechanisms have been reported, that is, normal and anomalous, to form metallic alloys. 36 …”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Amorphous Framework in Electrodeposited CuBiTe Thermoelectric Thin Films with High Room-Temperature Performance

Padmanathan

Lal

Gautam

et al. 2021

ACS Appl. Electron. Mater.

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“…e current efficiency (CE) was in the interval from 20 to 28%. In the study by Porto et al [9], Fe-W alloys with tungsten concentration of 39-69.6 wt. % were obtained at temperature of 60°C and direct current density of 50 mA/cm 2 from ammonia-citrate electrolytes based on Fe (III).…”

Section: Introductionmentioning

confidence: 99%

Corrosion and Mechanical Properties of the Fe‐W‐Wo₂ and Fe‐Mo‐MoO₂ Nanocomposites

Yar-Mukhamedova

Ved

Сахненко

et al. 2021

Advances in Materials Science and Engineering

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Analyzing of composition electrolytic coatings’ application for the metal surface protection is considered. It is established that using different components for coatings’ modification gives possibility to obtain surfaces with expanding exploitation properties, in particular, with improved wearing and anticorrosion resistance. The new approach for protecting details which are made from cast irons by obtaining two kinds of composition coatings from binary alloys iron-molybdenum and iron-tungsten is proposed. It is found that the modification of iron by refractory metals up to 37 wt. % leads to a noticeable change in the microstructure of the coatings’ surface. It is established that the incorporation of refractory metals into the iron matrix is a good way to increase the microhardness of the surface by 2.5–3.5 times and rising of the wear resistance by 40%, as well as decreasing the friction coefficient by 3-4 times in comparison with the cast iron substrate. The research results can be used for surfaces hardening and protection in different industries.

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Direct View on Non‐Equilibrium Heterogeneous Dynamics in Glassy Nanorods

Spangenberg

Hilke

Wilde

et al. 2021

Adv Funct Materials

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Amorphous solids are potential candidates for room temperature applications, such as structural materials, due to their outstanding mechanical properties. For the first time, the local atomic dynamics of amorphous metallic nanorods are spatially resolved at room temperature using electron microscopy. Methodologically, quasi-equilibrium conditions are verified by two-time correlation functions. FeNiP is chosen as a suitable model system since a bamboo structure forms upon electrodeposition into nanotubular confinement, consisting of thin Fe-rich and Ni-rich amorphous layers. Therefore, the present nano-glassy structure allows studying the glass dynamics of two glassy phases at once, at the same time avoiding any preparation-related structural artifacts of the intrinsically electron-transparent samples. By comparing the local atomic mobility with the local composition and the local structural information of the glassy phases, correlations between medium-range order and time scales of heterogeneous glassy dynamics are consistently obtained.

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The influence of anomalous codeposition on few coating alloys properties

Cited by 6 publications

References 22 publications

Amorphous Framework in Electrodeposited CuBiTe Thermoelectric Thin Films with High Room-Temperature Performance

Amorphous Framework in Electrodeposited CuBiTe Thermoelectric Thin Films with High Room-Temperature Performance

Corrosion and Mechanical Properties of the Fe‐W‐Wo₂ and Fe‐Mo‐MoO₂ Nanocomposites

Direct View on Non‐Equilibrium Heterogeneous Dynamics in Glassy Nanorods

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The influence of anomalous codeposition on few coating alloys properties

Cited by 6 publications

References 22 publications

Amorphous Framework in Electrodeposited CuBiTe Thermoelectric Thin Films with High Room-Temperature Performance

Amorphous Framework in Electrodeposited CuBiTe Thermoelectric Thin Films with High Room-Temperature Performance

Corrosion and Mechanical Properties of the Fe‐W‐Wo2 and Fe‐Mo‐MoO2 Nanocomposites

Direct View on Non‐Equilibrium Heterogeneous Dynamics in Glassy Nanorods

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Corrosion and Mechanical Properties of the Fe‐W‐Wo₂ and Fe‐Mo‐MoO₂ Nanocomposites