Mechanical and thermoelectric properties of intragranular SiC- Nanoparticle/Mg2Si composites
Mechanical and thermoelectric properties of intragranular SiC- Nanoparticle/Mg2Si composites
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DOI：
10.1016/j.jallcom.2018.10.066
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发表时间：
2019-02
影响因子：
6.2
通讯作者：
R. Inoue;Junki Nakano;Takashi Nakamura;Takuji Ube;T. Iida;Y. Kogo
中科院分区：
文献类型：
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作者：
R. Inoue;Junki Nakano;Takashi Nakamura;Takuji Ube;T. Iida;Y. Kogo
采用等离子体活化烧结法制备了晶间和晶内sic纳米颗粒/Mg2Si复合材料，并对其断裂韧性和热电性能进行了表征。晶内复合材料的韧性比纯Mg2Si高60%。与纯Mg2Si相比，电导率降低，但与SiC含量无关，最高可达5 vol%。因此，在Mg2Si晶粒中加入大量的SiC纳米颗粒是同时提高韧性和热电性能的有效方法。
Inter- and intragranular SiC-nanoparticle/Mg2Si composites were fabricated by plasma activated sintering, and the fracture toughness and thermoelectric properties were characterized. The toughness of the intragranular composite was 60% higher than that of pure Mg2Si. The electrical conductivity became lower compared with pure Mg2Si, however, it was independent of SiC content up to 5 vol%. Incorporation of a large amount of SiC nanoparticles within the Mg2Si grains is therefore an effective way to simultaneously improve toughness and thermoelectric properties.