Nanosized precipitates in half-Heusler TiNiSn alloy

Nanosized precipitates in half-Heusler TiNiSn alloy
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DOI:
10.1063/1.3679377
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发表时间:
2012-01-16
影响因子:
4
通讯作者:
Kimura, Yoshisato
Kimura, Yoshisato
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Chai, Yaw Wang;Kimura, Yoshisato

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本研究对半赫斯勒TiNiSn合金的微观结构进行了研究。在半赫斯勒基体中发现了高密度的相干纳米尺寸赫斯勒析出物。这些赫斯勒析出物是通过相分离过程形成的,在此过程中,单相固溶体(半赫斯勒 - 赫斯勒)分解为半赫斯勒和赫斯勒区域的平衡两相混合物。这些赫斯勒纳米析出物改善了合金的热电性能。(C)2012美国物理学会。[doi:10.1063/1.3679377]
The microstructure of half-Heusler TiNiSn alloy has been investigated in this study. A high density of coherent nanosized Heusler precipitates was found within the half-Heusler matrix. Formation of these Heusler precipitates occurs by a phase separation process, where a single phase solid solution (half-Heusler-Heusler) decomposes into an equilibrium two-phase mixture of half-Heusler and Heusler regions. These Heusler nanoprecipitates improve the thermoelectric properties of the alloy. (C) 2012 American Institute of Physics. [doi:10.1063/1.3679377]