Preparation and Thermoelectric Characterization of SiC-B4C Composites

被引:33
作者
Lankau, Volkmar [1 ]
Martin, Hans-Peter [1 ]
Hempel-Weber, Renate [2 ]
Oeschler, Niels [2 ]
Michaelis, Alexander [1 ]
机构
[1] Fraunhofer Inst Ceram Technol & Syst, Dresden, Germany
[2] Max Planck Inst Chem Phys Solids, Dresden, Germany
关键词
SiC-B4C composites; silicon carbide; boron carbide; thermoelectric properties;
D O I
10.1007/s11664-010-1129-0
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
SiC-B4C composites with various values of SiC-to-B4C ratio and grain size were fabricated by pressureless sintering. This paper presents the results of current investigations of this composite material. This includes the parameters of manufacture (shrinkage, density, and open porosity), thermoelectric properties (electrical and thermal conductivity, and thermopower), and material characterization (x-ray diffraction, scanning electron microscopy, oxidation resistance, and thermal expansion). The results indicate high potential of this composite as an alternative material for thermoelectric applications at high temperatures. The Seebeck coefficient of the composite was higher than that of the single-component materials B4C and SiC and reached 400 mu V/K at 500A degrees C.
引用
收藏
页码:1809 / 1813
页数:5
相关论文
共 9 条
[1]   OXIDATION RESISTANCE OF BORON CARBIDE-BASED CERAMICS [J].
GOGOTSI, YG ;
YAROSHENKO, VP ;
PORZ, F .
JOURNAL OF MATERIALS SCIENCE LETTERS, 1992, 11 (05) :308-310
[2]  
GOTO T, 1997, P ICCM 11
[3]  
IOFFE AF, 1957, HALBLEITER THERMOELE
[4]  
KONDO A, 1992, J CERAM SOC JPN, V100, P1204
[5]  
NAZARCHUK TN, 1964, SOV POWDER METALL, V3, P123
[6]   OXIDATION BEHAVIOR AND STRENGTH OF B4C-30 WT PERCENT SIC COMPOSITE-MATERIALS [J].
RIU, DH ;
CHOI, R ;
KIM, HE ;
KANG, ES .
JOURNAL OF MATERIALS SCIENCE, 1995, 30 (15) :3897-3902
[7]   ELECTRICAL PROPERTIES OF POLYCRYSTALLINE SILICON FILMS [J].
SETO, JYW .
JOURNAL OF APPLIED PHYSICS, 1975, 46 (12) :5247-5254
[8]   Sintering of silicon carbide powder containing metal boride [J].
Tanaka, H ;
Hirosaki, N ;
Nishimura, T .
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 2003, 111 (12) :878-882
[9]   SiC-B4C composites for synergistic enhancement of thermoelectric property [J].
Uehara, M ;
Shiraishi, R ;
Nogami, A ;
Enomoto, N ;
Hojo, J .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2004, 24 (02) :409-412