Protective Properties of Magnetron-Sputtered Cr–Si Layers on CoSb3

Godlewska, E.; Zawadzka, K.; Mars, Krzysztof; Mania, R.; Wojciechowski, K.; Opoka, A.

doi:10.1007/s11085-010-9209-3

Cited by 22 publications

(9 citation statements)

References 13 publications

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“…In order to prevent the diffusion between the skutterudite TE material and the electrode and to release the stress at the joint, an intermediate layer or a barrier layer is usually employed between them. Some attempts [ [224][225][226][227][228][229][230][231][232][233][234][235][236] have been made to join TE materials onto different electrodes (such as Mo-Cu alloys [225,229,236], Ag-Cu [233], Cu [235]) with different barrier layers or intermediate layer (such as Cr-Si alloys [225], Ti-Al alloys [227], Ni [228], Ti [229,230], TiCoSb [231], ZrO 2 /Ti [232], Co [233], Al-Ni [234], Fe-Ni [237]) in recent years. The lower contact resistance, stable interface, and high mechanical properties of the device can be obtained by selecting the appropriate electrode and barrier layers to connect with the CoSb 3 -based material.…”

Section: Cosb 3 -Based Te Devicesmentioning

confidence: 99%

“…have been widely studied. The output performance and service behavior of CoSb 3 -based TE devices were greatly improved by the design and optimization of electrode, interface and barrier layer, and the protection coating [225,232,234,251,252] for preventing Sb sublimation and oxidation. Table 2 summarizes some available CoSb 3 -based TE devices reported in recent years.…”

Section: Cosb 3 -Based Te Devicesmentioning

confidence: 99%

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A review of CoSb3-based skutterudite thermoelectric materials

et al. 2020

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The binary skutterudite CoSb3 is a narrow bandgap semiconductor thermoelectric (TE) material with a relatively flat band structure and excellent electrical performance. However, thermal conductivity is very high because of the covalent bond between Co and Sb, resulting in a very low ZT value. Therefore, researchers have been trying to reduce its thermal conductivity by the different optimization methods. In addition, the synergistic optimization of the electrical and thermal transport parameters is also a key to improve the ZT value of CoSb3 material because the electrical and thermal transport parameters of TE materials are closely related to each other by the band structure and scattering mechanism. This review summarizes the main research progress in recent years to reduce the thermal conductivity of CoSb3-based materials at atomic-molecular scale and nano-mesoscopic scale. We also provide a simple summary of achievements made in recent studies on the non-equilibrium preparation technologies of CoSb3-based materials and synergistic optimization of the electrical and thermal transport parameters. In addition, the research progress of CoSb3-based TE devices in recent years is also briefly discussed.

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Section: Cosb 3 -Based Te Devicesmentioning

confidence: 99%

Section: Cosb 3 -Based Te Devicesmentioning

confidence: 99%

A review of CoSb3-based skutterudite thermoelectric materials

et al. 2020

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“…Sakamoto et al adopted a continuous metal foil as a physical barrier which restrained thermal decomposition near the surface of SKD materials . Godlewska et al deposited Cr–5Si thin layers onto CoSb 3 using pulse magnetron sputtering, preventing the degradation of SKDs at high temperatures in air . However, the thin layers lost their protection ability at 600 °C.…”

Section: Development Of Filled‐skutterudite‐based Devices For Power Gmentioning

confidence: 99%

Thermoelectric Devices for Power Generation: Recent Progress and Future Challenges

et al. 2015

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Thermoelectric (TE) devices for power generation have been attracting increasing attention on account of their advantages such as solid-state operation, good stability, and high reliability. This paper presents an overview of the design principle, fabrication methods and testing technology of TE power generation devices. Particular attention is paid to skutterudite-based devices regarding electrode fabrication, barrier layer design, interface optimization, protective coating, and evaluation of elements and modules. The development of Bi 2 Te 3 -based devices for power generation focusing specifically on the optimization of Bi 2 Te 3 /electrode joints and fabrication and evaluation of Bi 2 Te 3 -based modules is summarized. The future challenges concerning TE devices for power generation are discussed.

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“…Different types of high-temperature protective systems for CoSb 3 -based materials were tested over the years. Several approaches addressed protection against antimony sublimation in an oxygen-free environment [29][30][31][32] and a few against oxidation [33][34][35][36][37]. Glass-based coatings are of interest as protective coatings for both n-and p-type thermoelectrics.…”

Section: Introductionmentioning

confidence: 99%

Processing, Characterization, and Oxidation Resistance of Glass-Ceramic Coating on CoSb3

et al. 2023

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Power generation based on thermoelectric (TE) materials is very attractive due to its low environmental impact and waste heat recovery. Thermoelectric materials based on cobalt triantimonide CoSb3 exhibit one of the highest energy conversion efficiencies, revealing thermoelectric figures of merit, ZTs > 1, but undergo oxidation above 380 °C and sublimation above 500 °C. In this work, a glass-ceramic coating was chosen to match the coefficient of thermal expansion (CTE) of the TE substrate 9.2 × 10−6 K−1 (200–400 °C), deposition temperature (max. 700 °C), and maximum working temperature (600 °C). Coating processing involved the production of glass powder and glass-ceramic sintering. The glass-ceramic and the coating/CoSb3 interface were systematically investigated by means of dilatometry, X-ray diffraction, and scanning and transmission electron microscopy. As a result, a coating with good substrate coverage and adherence was developed. Finally, oxidation tests were carried out at 500 and 600 °C in order to assess the protective properties of the glass-ceramic. Microstructural and chemical composition analysis indicated limited protective properties of the coating.

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Protective Properties of Magnetron-Sputtered Cr–Si Layers on CoSb3

Cited by 22 publications

References 13 publications

A review of CoSb3-based skutterudite thermoelectric materials

A review of CoSb3-based skutterudite thermoelectric materials

Thermoelectric Devices for Power Generation: Recent Progress and Future Challenges

Processing, Characterization, and Oxidation Resistance of Glass-Ceramic Coating on CoSb3

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