Preparation and Thermoelectric Properties of SiC Matrix Composites Prepared under a Low Sintering Temperature

Ming Liang Li; Hai Long Wang; Rui Zhang; Jing Li; Jun Hao Li

doi:10.4028/www.scientific.net/AMR.105-106.333

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 105-106 Preparation and Thermoelectric Properties of SiC...

Preparation and Thermoelectric Properties of SiC Matrix Composites Prepared under a Low Sintering Temperature

Abstract:

SiC powders with nickel powders and sintering aids were prepared by pressureless sintering at 1500oC under a N2 atmosphere. XRD, TEM, SEM techniques were used to characterize the phases and microstructure of the specimens. The thermoelectric properties of SiC matrix composites were investigated by measuring the Seebeck coefficient and the electrical conductivity. The main phase of all samples was -SiC, the Ni2Si can be observed with adding nickel powders. The largest electric conductivity was close to 3.5 m-1-1 at about 973K. The highest Seeback coefficient was up to 1800 V/K at 1073K. The transition from n-type to p-type was occurred.

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Advanced Materials Research (Volumes 105-106)

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333-335

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https://doi.org/10.4028/www.scientific.net/AMR.105-106.333

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Online since:

April 2010

Authors:

Ming Liang Li, Hai Long Wang, Rui Zhang, Jing Li, Jun Hao Li

Keywords:

Pressureless Sintering, Silicon Carbide (SiC), Thermoelectric Property

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