Výsledky vyhledávání - "Atta U. Khan"

Fabrication and characterization of arc melted Si/B co-doped boron carbide

Autor: Kevin J. Hemker, Atta U. Khan, Martin P. Harmer, Richard A. Haber, Jerry C. LaSalvia, Christopher J. Marvel, Qirong Yang, Ankur Chauhan, Vladislav Domnich, Chawon Hwang

Publikováno v: Journal of the European Ceramic Society. 39:5156-5166

Boron carbide undergoes stress-induced amorphization when subjected to large non-hydrostatic stresses that exceed its elastic limit. This has been proposed as the source for the abrupt loss of shear strength in boron carbide which limits its engineer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c88cb7f2225e82db06481c33111d2e25
https://doi.org/10.1016/j.jeurceramsoc.2019.08.024

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Fabrication of dense B4C-preceramic polymer derived SiC composite

Autor: Vladislav Domnich, Qirong Yang, Richard A. Haber, Atta U. Khan, Kelvin Y. Xie, Chawon Hwang, Kevin J. Hemker, Sisi Xiang

Publikováno v: Journal of the European Ceramic Society. 39:718-725

B4C-SiC composites were fabricated via the preceramic polymer (PCP) route combined with pressure-assisted sintering. Fully dense bodies were achieved by controlling surface oxide on B4C powder and pyrolysis conditions for PCP coated powder. We elucid

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cd8434929357954dba5e2270a15ea52a
https://doi.org/10.1016/j.jeurceramsoc.2018.12.029

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Sb Doping of Metallic CuCr2S4 as a Route to Highly Improved Thermoelectric Properties

Autor: Jean-François Halet, Amir Pakdel, Jean-Baptiste Vaney, Takao Mori, Atta U. Khan, Rabih Al Rahal Al Orabi, Seiji Mitani, Bruno Fontaine, Régis Gautier

Publikováno v: Chemistry of Materials
Chemistry of Materials, American Chemical Society, 2017, 29 (7), pp.2988--2996. ⟨10.1021/acs.chemmater.6b05344⟩
Chemistry of Materials, 2017, 29 (7), pp.2988--2996. ⟨10.1021/acs.chemmater.6b05344⟩

International audience; We report for the first time the thermoelectric properties of CuCr2-xSbxS4 (0.22

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::346ee6dce8f80705e938b01ddbe1d1e8
https://doi.org/10.1021/acs.chemmater.6b05344

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Nano-micro-porous skutterudites with 100% enhancement in ZT for high performance thermoelectricity

Autor: Yanming Xue, Yusuke Yamauchi, Dmitri Golberg, Koichi Tsuchiya, Baozhen Jiang, Takao Mori, Dai-Ming Tang, Yoshio Bando, Masanori Mitome, Atta U. Khan, Kazuaki Kobayashi, Kotone Hasegawa

Publikováno v: Nano Energy. 31:152-159

Increasing energy demands require new materials, e.g., thermoelectrics, for efficient energy conversion of fossil fuels. However, their low figure of merit (ZT) limits widespread applications. Nanostructuring has been an effective way of lowering the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04b050c92e392532fd16f8b2f2b5670f
https://doi.org/10.1016/j.nanoen.2016.11.016

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Thermoelectric Properties of Ni 0.05 Mo 3 Sb 5.4 Te 1.6 with Embedded SiC and Al 2 O 3 Nanoparticles

Autor: Nagaraj Nandihalli, Stéphane Gorsse, Takao Mori, Holger Kleinke, Atta U. Khan, Quansheng Guo

Publikováno v: European Journal of Inorganic Chemistry. 2016:853-860

First, a large sample of Ni0.05Mo3Sb5.4Te1.6 was prepared by heating the elements in the stoichiometric ratio. β-SiC nanoparticles were added in volume fractions, f, of 0.01, 0.02, and 0.034 to three different portions of the material, and a portion

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::02b8fbb2ccc98fa7cf9254f0cb874c28
https://doi.org/10.1002/ejic.201501063

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Synthesis, characterization and thermoelectric properties of Sm filled Fe4−xNixSb12 skutterudites

Autor: Riccardo Ricciardi, Gilda Zanicchi, Riccardo Carlini, Atta U. Khan, Takao Mori

Publikováno v: Journal of Alloys and Compounds. 655:321-326

High figure of merit of n-type skutterudites have encouraged the researchers to focus on its p-type counterpart. In the following study, we report a rather simple synthesis route for Sm filled and Ni-doped p-type skutterudites (Sm y Fe 4−x Ni x Sb

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::662a402faef341a3ab71bdc11fc04462
https://doi.org/10.1016/j.jallcom.2015.09.141

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Locating Si atoms in Si-Doped Boron Carbide: a Route to Understand Amorphization Mitigation Mechanism

Autor: Richard A. Haber, Kevin J. Hemker, Kristopher D. Behler, Atta U. Khan, Chawon Hwang, Kelvin Y. Xie, Mingwei Chen, Jerry C. LaSalvia, Anthony Etzold, Xiaokun Yang, Vladislav Domnich, William A. Goddard, Qi An

The well-documented formation of amorphous bands in boron carbide (B4C) under contact loading has been identified in the literature as one of the possible mechanisms for its catastrophic failure. To mitigate amorphization, Si-doping was suggested by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a688d3eda870671ccec9072544f25ab
https://resolver.caltech.edu/CaltechAUTHORS:20180711-164757330

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Electronic Structure and Thermoelectric Properties of Pseudoquaternary $$\hbox{Mg}_{2}\hbox{Si}_{1-x-y}\hbox{Sn}_{x}\hbox{Ge}_{y}$$ Mg 2 Si 1 - x - y Sn x Ge y -Based Materials

Autor: Stanislaw Kaprzyk, Atta U. Khan, K. Kutorasinski, Janusz Tobola, Th. Kyratsi

Publikováno v: Journal of Electronic Materials

A theoretical study is presented on complex pseudoternary Bi-doped $\hbox{Mg}_{2}\hbox{Si}_{1-x-y}\hbox{Sn}_{x}\hbox{Ge}_{y}$ materials, which have recently been revealed to reach high thermoelectric figures of merit (ZT) of ∼1.4. Morphological c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b772ad7ec61554c22fc0b1fea238e7f
https://doi.org/10.1007/s11664-014-3214-2

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