Mechanical Properties of Ca0.9Yb0.1MnO3/Ag Composites for n-Type Legs of Thermoelectric Oxide Devices
スポンサーリンク
概要
- 論文の詳細を見る
CaMnO3 systems are known to exhibit excellent thermoelectric (TE) performance at high temperature in air and are, therefore, good candidates for the n-type legs of TE oxide devices. In previous studies, however, several CaMnO3 system legs have fractured easily after the power generation test. The fractures were probably caused by the inherently low mechanical strength of CaMnO3, due to which it developed a great thermal stress arising from the big difference in thermal expansion coefficient between the Ag electrode and the CaMnO3 leg. In the present study, Ag particles were dispersed in a Ca0.9Yb0.1MnO3 matrix to mitigate the problems mentioned above. The incorporation of Ag particles into the matrix led to both improvement of the mechanical strength of Ca0.9Yb0.1MnO3 and to reduction in the thermal stress at the junction between the Ag electrode and the Ca0.9Yb0.1MnO3/Ag composite leg. Additionally, the ability of TE oxides to withstand application of a maximum temperature gradient without impairment of their mechanical strength could be significantly improved as a result.
- 2008-08-25
著者
-
Kosuga Atsuko
National Institute Of Advanced Industrial Science And Technology (aist)
-
FUNAHASHI Ryoji
National Institute of Advanced Industrial Science and Technology
-
Yamanaka Shinsuke
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka Un
-
Kurosaki Ken
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka University
-
Yamanaka Shinsuke
Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
-
Urata Saori
National Institute of Advanced Industrial Science and Technology, Ikeda, Osaka 563-8577, Japan
関連論文
- Thermoelectric Properties of the Thallium-Tellurium Binary Compounds
- Effects of KCl Addition on the K_2CO_3 Flux Growth of Ca_3Co_4O_9 Crystals for a Thermoelectric Device
- Molecular Dynamics Study on Defect Structure of Gadolinia-Doped Thoria
- Thermoelectric Properties of Tl_8GeTe_5 with Low Thermal Conductivity
- Compositional Difference of Thermoelectric Properties in Ag_9TlTe_5
- Microscale Seebeck Scanning of Polycrystalline Samples of N-Type AgPb_SbTe_ and P-Type AgPb_9Sn_9SbTe_
- Thermoelectric and Thermophysical Characteristics of Cu_2Te-Tl_2Te Pseudo Binary System
- Thermoelectric Properties of Thallium Compounds with Extremely Low Thermal Conductivity
- Thermoelectric Performance of Magnetically c-Axis Aligned Ca-based Cobaltites
- Synthesis and Thermoelectric Properties of Magnetically c-Axis-Oriented [Ca_2CoO_]_CoO_2 Bulk with Various Oxygen Contents
- Molecular Dynamics Studies of Americium-Containing Mixed Oxide Fuels
- Fabrication and Thermoelectric Properties of Ag_9TlTe_X (X = 5.0-6.0)
- Crystal Growth of Thermoelectric Material Na_xCoO_ by a Flux Method : Structure and Mechanical and Thermal Properties of Condensed Matter
- Effect of Rh Substitution for Co on the Thermoelectric Properties of CoSb_3
- Thermal Conductivity of the Ternary Compounds : AgMTe_2 and AgM_5Te_8 (M = Ga or In)
- Molecular Dynamic Studies of Minor Actinide Dioxides
- Bi-Substitution Effects on Crystal Structure and Thermoelectric Properties of Ca3Co4O9 Single Crystals
- Mechanical Properties of Ca0.9Yb0.1MnO3/Ag Composites for n-Type Legs of Thermoelectric Oxide Devices
- Thermomechanical Properties of Hafnium Hydride
- Thermal Conductivity of Hafnium Hydride
- Thermoelectric Properties of La-Doped BaSi_2
- Thermoelectric Properties of Half-Heusler Type LaPdBi and GdPdBi
- Substitution Effect on Thermoelectric Properties of ZrNiSn Based Half-Heusler Compounds
- Thermoelectric and Thermophysical Properties of TiCoSb-ZrCoSb-HfCoSb Pseudo Ternary System Prepared by Spark Plasma Sintering
- Thermoelectric Properties of (Ti, Zr, Hf)CoSb Type Half-Heusler Compounds
- Thermoelectric Properties of Lanthanum-Doped Europium Titanate
- Thermoelectric Properties of Polycrystalline Ca0.9Yb0.1MnO3 Prepared from Nanopowder Obtained by Gas-Phase Reaction and Its Application to Thermoelectric Power Devices
- Effect of the Amount of Vacancies on the Thermoelectric Properties of Cu-Ga-Te Ternary Compounds (Special Issue on Thermoelectric Conversion Materials (7))
- Synthesis and thermal conductivity of Y_6UO_
- Effects of KCl Addition on the K2CO3 Flux Growth of Ca3Co4O9 Crystals for a Thermoelectric Device
- Ab initio study of hydrogen diffusion in zirconium oxide
- Effect of Cu Doping into the Ga Site on the Thermoelectric Properties of AgGaTe_2 with Chalcopyrite Structure
- Effect of the Amount of Vacancies on the Thermoelectric Properties of Cu-Ga-Te Ternary Compounds
- Effect of Phase Transition on the Thermoelectric Properties of Ag_2Te
- High-Thermoelectric Figure of Merit Realized in p-Type Half-Heusler Compounds: ZrCoSnxSb1-x
- Ag8SiTe6: A New Thermoelectric Material with Low Thermal Conductivity
- Thermal Conductivity Characterization in Bulk Zn(Mn,Ga)O4 with Self-Assembled Nanocheckerboard Structures
- Effect of Bi Substitution on Microstructure and Thermoelectric Properties of Polycrystalline [Ca2CoO3] pCoO2
- Synthesis and Thermoelectric Properties of Magnetically $c$-Axis-Oriented [Ca2CoO3-δ]0.62CoO2 Bulk with Various Oxygen Contents
- Reduction in Lattice Thermal Conductivity of InSb by Formation of the ZnIn₁₈GeSb₂₀ Alloy