Faculty Profiles - ITOH Takashi

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生成したSb ナノ粒子を用いた液相－固相反応法によるβ-Zn₄Sb₃ ナノ粒子の合成

丸山拓馬, 伊藤孝至

日本金属学会第149回秋季大会

(Mn_1-XTi_X)Si_1.82 の合成と熱電特性の評価

大野直紀, 伊藤孝至

日本金属学会第149回秋季大会

*Development of Eco-Friendly Thermoelectric Materials and Modules for Energy Harvesting International conference

The 17th ATA International Symposium

Event date： 2011.11

Language：English Presentation type：Oral presentation (invited, special)

A thermoelectric power generation system can directly convert a thermal energy into an electric energy without gas emissions, and it is one of the effective green energy systems. The natural energy from sunshine and geothermy and the waste heat discharged from automobile, industrial furnace, refuse incineration furnace and other combustion systems can be used as the heat resources for the thermoelectric power generation. Especially, the power generation system using the waste heat with intermediate temperature (300-600 ^oC), which is discharged from automobile, industrial furnace, and refuses incineration etc., plays a very important role for saving energy and environmental conservation. Thus, the developments on the thermoelectric materials and the modules working effectively in this temperature range are required. Our research group has researched and developed the thermoelectric materials (Zn₄Sb₃, AgSbTe₂, CoSb₃, MnSi_1.73 and Mg₂Si) and the modules constructed with these materials. Among these thermoelectric materials, the silicide materials of MnSi_1.73 (p-type) and Mg₂Si (n-type) begin to attract an attention as promising eco-friendly thermoelectric materials because their constituent elements have no toxicity and exist abundantly in earth crust and they have relatively good thermoelectric performance. In this work, the higher manganese silicide MnSi_1.73 was synthesized through the mutual diffusion process activated by a pulse discharge sintering (PDS) method after individually grinding Mn and Si powders. The MnSi_1.73 synthesized by the method had a better thermoelectric performance than the material synthesized by the conventional fusion method. Next, the Mg₂Si-besed compound was synthesized by a liquid-solid phase reaction (LSPR) method. In the LSPR method, Mg powder and magnesium alloy chips were melted above the melting point of these metals and reacted with Si powder in the solid state, and then the Mg₂Si-based compound powder was synthesized. The powder was consolidated by PDS method. The Mg₂Si-based compound including magnesium alloy elements had a remarkably good thermoelectric performance. The eco-friendly module was fabricated using the thermoelectric elements of MnSi_1.73 and Mg₂Si-based compounds. Joining between the elements and the electrode was carried out by PDS method. The thermoelectric performance of the fabricated module was evaluated. The simulation of the thermoelectric performance of the similar module was also carried out using finite element method (FEM).

熱電変換材料の高性能化と新規モジュールの製造技術

伊藤孝至

熱電変換セミナー「中高温域に適した熱電変換モジュールの高効率化と性能評価」

Fe-Si系熱電発電モジュールの開発

森重裕美子, 向永和人, 相馬岳, 伊藤孝至

第８回日本熱電学会学術講演会

Effect of Addition of Alumina Nanoparticles on Thermoelectric Properties of La-filled Skutterudite CoSb₃ Compounds International conference

M. Matsuhara, T. Itoh

30th International Conference on Thermoelectrics

Mg合金を使用して合成したMg₂Si系化合物の熱電特性に及ぼす高温大気曝露の影響

萩尾建門, 伊藤孝至

平成23年度春季（第107回）講演大会

La充填CoSb₃系化合物の熱電特性に及ぼすアルミナナノ粒子添加の影響

松原正樹, 伊藤孝至

平成23年度春季（第107回）講演大会

粉末冶金プロセスを用いたシリサイド系化合物の合成と熱電特性

伊藤孝至

第５８回応用物理学関係連合講演会シンポジウム「見直され始めたシリサイド系熱電材料」

粉末冶金プロセスによるシリサイド系熱電材料の合成とその特性評価

伊藤孝至

粉体粉末冶金協会焼結基礎分科会　第２８回技術・品質評価委員会

Thermoelectric Properties of Carbon Nanotubes Added n-type CoSb₃ Compound International conference

T.Itoh and M. Tachikawa

2010 MRS Fall Meeting

ポリオールプロセスによるBi-Te-Se熱電化合物のナノサイズ合成

西脇想祐，伊藤孝至

第20回学生による材料フォーラム

MA-PDS法によるMg-La二重充填CoSb₃の合成とその熱電特性

松原正樹，伊藤孝至

第20回学生による材料フォーラム

液相―固相反応法によって合成したMg₂Si系化合物の熱電性能に及ぼすMg合金配合の影響

萩尾建門，伊藤孝至

第20回学生による材料フォーラム

Synthesis of Bi₂Te₃ Nanosheets Using Polyol Process International conference

S. Nishiwaki and T. Itoh

3rd International Congress on Ceramics

Fabrication and Thermoelectric Properties of Eco-Friendly Silicides for Thermoelectric Power Generation Using Waste Heat International conference

T. Itoh

The International Symposium on Advanced Materials Development and Integration of Novel Structured Metallic and Inorganic Materials

MA‐PDS法で作製したLa‐Mg二重充填CoSb₃スクッテルダイトの熱電特性

松原正樹，伊藤孝至

平成22年度粉体粉末冶金協会秋季（第106回）講演大会

ポリオールプロセスを用いたナノサイズBi-Te-M (M=Se, Sb)熱電化合物の合成

西脇想祐，伊藤孝至

平成22年度粉体粉末冶金協会秋季（第106回）講演大会

液相‐固相反応法によって合成したMg合金を用いたMg₂Si系化合物の熱電特性

萩尾建門，伊藤孝至

平成22年度粉体粉末冶金協会秋季（第106回）講演大会

廃熱をエネルギー資源として活用できる熱電材料の開発

伊藤孝至

第108回金属物性研究会

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