Young's Modulus and Hardness of Zr&lt;SUB&gt;0.5&lt;/SUB&gt;Hf&lt;SUB&gt;0.5&lt;/SUB&gt;Ni&lt;SUB&gt;&lt;I&gt;x&lt;/I&gt;&lt;/SUB&gt;Pd&lt;SUB&gt;1– &lt;I&gt;x&lt;/I&gt;&lt;/SUB&gt;Sn&lt;SUB&gt;0.99&lt;/SUB&gt;Sb&lt;SUB&gt;0.01&lt;/SUB&gt; Half-Heusler Compounds

Verges, Melody A.; Schilling, Paul J.; Upadhyay, Puja; Miller, William K.; Yaqub, Rumana; Stokes, Kevin L.; Poudeu, Pierre F. P.

doi:10.1166/sam.2011.1197

Cited by 12 publications

(2 citation statements)

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“…Their mechanical and thermal stability is exceptional in comparison to the commonly used thermoelectric materials (Hardness ≈ 900 VH1) which is important for the robustness of the devices in most applications. [477] For more details about all the possibilities, opportunities, and challenges concerning the production of HH compounds the reader is refereed to the Ref. [478].…”

Section: Iif Heusler Compoundsmentioning

confidence: 99%

Thermoelectrics: From history, a window to the future

Beretta

Neophytou

Hodges

et al. 2019

Materials Science and Engineering: R: Reports

397

316

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Thermoelectricity offers a sustainable path to recover and convert waste heat into readily available electric energy, and has been studied for more than two centuries. From the controversy between Galvani and Volta on the Animal Electricity, dating back to the end of the XVIII century and anticipating Seebeck's observations, the understanding of the physical mechanisms evolved along with the development of the technology. In the XIX century Ørsted clarified some of the earliest observations of the thermoelectric phenomenon and proposed the first thermoelectric pile, while it was only after the studies on thermodynamics by Thomson, and Rayleigh's suggestion to exploit the Seebeck effect for power generation, that a diverse set of thermoelectric generators was developed.From such pioneering endeavors, technology evolved from massive, and sometimes unreliable, thermopiles to very reliable devices for sophisticated niche applications in the XX century, when Radioisotope Thermoelectric Generators for space missions and nuclear batteries for cardiac pacemakers were introduced. While some of the materials adopted to realize the first thermoelectric generators are still investigated nowadays, novel concepts and improved understanding of materials growth, processing, and characterization developed during the last 30 years has provided new avenues for the enhancement of the thermoelectric conversion efficiency, for example through nanostructuration, and favored the development of new classes of thermoelectric materials. With

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Section: Iif Heusler Compoundsmentioning

confidence: 99%

Thermoelectrics: From history, a window to the future

Beretta

Neophytou

Hodges

et al. 2019

Materials Science and Engineering: R: Reports

397

316

View full text Add to dashboard Cite

show abstract

“…9 The mechanical properties are essential for modeling the stress and strain behavior of thermoelectric module within a temperature gradient under the influence of external forces. Even though these properties were essential, only limited information from experiments 10,11 and theory 9,12,13 are available in the literature on mechanical properties of half-Heusler alloys. Meanwhile, the structural, electronic, thermoelectric and elastic properties of ZrNiPb had been examined at zero pressure in a recent work, 14 and it was established that ZrNiPb is mechanically and thermodynamically stable at ambient condition.…”

Section: Introductionmentioning

confidence: 99%

Exploring the impact of hydrostatic pressure on the structural, electronic and mechanical properties of ZrNiPb half-Heusler alloy: A DFT approach

Babalola

Adetunji

Iyorzor

et al. 2018

Int. J. Mod. Phys. B

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The structural, electronic, elastic and mechanical properties of ZrNiPb half-Heusler alloy under pressure ranging from 0 to 25 GPa have been studied using the density functional theory within the generalized gradient approximation (GGA). The results of ambient condition were in good agreement with the available theoretical and experimental data. Our electronic structure and density of state results show that ZrNiPb is an indirect bandgap semiconductor half-Heusler alloy with a narrow energy gap of 0.375 eV. Based on the calculated elastic constants (C[Formula: see text], C[Formula: see text] and C[Formula: see text]), Young’s modulus (E), Poisson’s ratio ([Formula: see text]), Shear modulus (G), Zener anisotropy factor (A) and brittle-ductile behaviors under pressure have been discussed. The calculated Poisson’s ratio shows that ZrNiPb undergoes a relatively small volume change during uniaxial deformation. We show that the chemical bonds in ZrNiPb are stronger due to the high value of C[Formula: see text].

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The Mechanical Properties of Inorganic Thermoelectric Materials: A Review on Characterization Methods and Correlations

Guttmann

Haroush²,

Gelbstein

2022

ChemNanoMat

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The conversion of thermal energy into electricity can be successfully applied by novel renewable energy known as thermoelectricity (TE). Such thermoelectric generators (TEGs) are currently at a technological readiness level (TRL) of 3–5 (out of a level of 10) approaching laboratory prototypes. One of the major setbacks to achieve higher TRLs is the fact that the focus of research is concentrated on improving the electronic/transport properties (mainly affecting the figure of merit – ZT) of the materials, while the research on the mechanical properties and the material‘s ability to adhere service conditions was left behind. Information about the mechanical properties of TE materials – elastic constants (e. g. Young's modulus and Poisson's ratio), strength, and fracture toughness – are paramount necessities (but not the only ones) for approaching practical TEGs. The elastic constants provide an understanding of the material‘s stiffness, while the strength and fracture toughness provide the loading conditions the material can endure. This work summarizes the various mechanical properties and measuring methods along with all up‐to‐date published data of these properties for inorganic TE materials. This work aims to expose the TE community to the under‐looked and nearly untreated field of research. Also, for the first time, a statistical analysis of the collected data was employed to highlight cross relations between mechanical, and physical properties and those who had a high Pearson's correlation parameter are presented. These correlations in turn have the potential to expedite the development and screening of inorganic TE materials for the various applications needed.

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Young's Modulus and Hardness of Zr<SUB>0.5</SUB>Hf<SUB>0.5</SUB>Ni<SUB><I>x</I></SUB>Pd<SUB>1– <I>x</I></SUB>Sn<SUB>0.99</SUB>Sb<SUB>0.01</SUB> Half-Heusler Compounds

Cited by 12 publications

References 0 publications

Thermoelectrics: From history, a window to the future

Thermoelectrics: From history, a window to the future

Exploring the impact of hydrostatic pressure on the structural, electronic and mechanical properties of ZrNiPb half-Heusler alloy: A DFT approach

The Mechanical Properties of Inorganic Thermoelectric Materials: A Review on Characterization Methods and Correlations

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