Faculty Profiles - ITOH Takashi

Papers - ITOH Takashi

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粉末冶金プロセスを用いた環境調和型シリサイド系熱電変換材料の開発 Invited Reviewed

伊藤孝至

粉体および粉末冶金 Vol. 61 ( 11 ) page： 514-520 2014.11

Design of Segmented Thermoelectric Generator Based on Cost-effective and Light-weight Thermoelectric Alloys Reviewed

Hee Seok Kim, Keiko Kikuchi, Takashi Itoh, Tsutomu Iida, Minoru Taya

Materials Science and Engineering B Vol. 185 page： 45-52 2014.7

Language：English Publishing type：Research paper (scientific journal)

A segmented thermoelectric (TE) generator was designed with higher temperature segments composed of n-type Mg₂Si and p-type higher manganese silicide (HMS) and lower temperature segments composed of n- and p-type Bi-Te based compounds. Since magnesium and silicon based TE alloys have low densities, they produce a TE module with a high specific power density that is suitable for airborne applications. A two-pair segmented π-shaped TE generator was assembled with low contact resistance materials across bonding interfaces. The peak specific power density of this generator was measured at 42.9 W/kg under a 498 ^oC temperature difference, which has a good agreement with analytical predictions.

DOI： 10.1016/j.mseb.2014.02.005

液相‐固相反応法とパルス放電焼結法を用いて作製したMg₂Siの焼結性と熱電特性に及ぼすAl添加の影響 Reviewed

伊藤孝至, 富永　彰

粉体および粉末冶金 Vol. 61 ( 6 ) page： 324-328 2014.6

Influence of Aluminum Addition on Thermoelectric Performance of Mg₂Si Compound under Air Exposure with Temperature Difference Reviewed

T. Itoh, A. Tominaga

Mater. Res. Soc. Symp. Proc. Vol. 1642 page： Online mrsf13-1642-bb03-11 2014.5

Design of Linear Shaped Thermoelectric Generator and Self-integration Using Shape Memory Alloy Reviewed

Hee Seok Kim, Takashi Itoh, Tsutomu Iida, Minoru Taya, Keiko Kikuchi

Materials Science and Engineering B Vol. 183 page： 61-68 2014.4

液相－固相反応法で合成したMg₂Si系化合物の焼結性と熱電特性に及ぼすMg仕込量とB添加量の影響 Reviewed

富永　彰,　伊藤孝至

粉体および粉末冶金 Vol. 60 ( 8 ) page： 354-359 2013.8

半導体機器用Cr-Cu材ヒートシンクの焼結条件と溶浸性の関係 Reviewed

寺尾星明, 小日置英明, 太田裕樹, 伊藤孝至, 金武直幸

粉体および粉末冶金 Vol. 60 ( 8 ) page： 367-372 2013.8

Influence of Addition of Alumina Nanoparticles on Thermoelectric Properties of Higher Manganese Silicide Reviewed

T. Itoh, N. Ono

Mater. Res. Soc. Symp. Proc. Vol. 1490 page： Online mrsf12-1490-b09-31 2013.1

Influence of Addition of Alumina Nanoparticles on Thermoelectric Properties of La-filled Skutterudite CoSb₃ Compounds Reviewed

T. Itoh, M. Matsuhara

Materials Transactions Vol. 53 ( 10 ) page： 1801-1805 2012.10

Development of Cr-Cu Heat-sink(J-C'CREP®) for Semiconductor Device Reviewed

H. Terao, H. Kobiki, H. Ota, K. Tanabe, T. Itoh, N. Kanetake

Proc. 2012 Powder Metallurgy World Congress & Exhibition (PM2012) page： CD-ROM 16F-T14-13 2012.10

Development of Eco-Friendly Thermoelectric Silicide Compounds and Modules for Energy Harvesting Reviewed

T. Itoh, K. Nishigata

Proc. 2012 Powder Metallurgy World Congress & Exhibition (PM2012) page： CD-ROM 16E-S1-15 2012.10

Effects of Heavy Element Substitution on Electric Structure and Lattice Thermal Conductivity of Fe₂VAl Thermoelectric Material Reviewed

Y. Terazawa, M. Mikami, T. Itoh, T. Takeuchi

J. Electronic Materials Vol. 41 ( 6 ) page： 1348-1353 2012.6

Thermoelectric Properties of Mg₂Si-Based Compounds Synthesized Partially Using Magnesium Alloy Reviewed

T. Itoh, K. Hagio

AIP Conf. Proc. Vol. 1449 page： 207-210 2012.6

Language：English Publishing type：Research paper (scientific journal)

Mg₂Si compounds are promising eco-friendly thermoelectric materials because both constituent elements of Mg and Si have no toxicity and exist richly in earth crust. We have a plan to use the compounds in the applications that convert waste heat in the temperature range (600-900 K) into electric power. However, the thermoelectric performance of the compounds has not yet reached to the practical use level. In addition, the compounds don't have durability in the thermoelectric performance under atmospheric circumstances in the temperature range of 750-900 K. These issues have to be solved for the practical use. In our previous work, we obtained knowledge that Al doping in Mg₂Si lower the electrical resistivity and improved the thermoelectric performance. We newly attempted to use a magnesium alloy (AZ61) that includes the main three elements of aluminum (5.8-7.2 wt%), zinc (0.4-1.5 wt%) and manganese (0.15-0.35 wt%) in order to synthesize the Mg₂Si-based compounds. The Mg₂Si-based compound powders were synthesized from the mixture of silicon powder, AZ61 chips and Mg powder by the liquid-solid phase reaction method. The compound powders were sintered by the pulse discharge sintering method. The influence of mixing ratio of two metals of AZ61 and pure Mg on the thermoelectric properties was investigated. Addition of AZ61 greatly decreased the electrical resistivity as well as Al-doped Mg₂Si and the thermoelectric performance had improved most in the 50wt%AZ61 sample.

DOI： 10.1063/1.4731533

粉砕とパルス放電焼結を組合わせた方法による高マンガンシリサイドの合成とその熱電特性

伊藤孝至

日本熱電会誌 Vol. 8 ( 3 ) page： 18-21 2012.3

Fe₂VAlの電子構造と熱電物性における重元素部分置換効果 Reviewed

寺澤祐一，三上祐史，伊藤孝至，竹内恒博

日本金属学会誌 Vol. 76 ( 3 ) page： 216-221 2012.3

Synthesis of β-Zn₄Sb₃ Thermoelectric Nanoparticles by Reaction of Synthesized Sb Nanoparticles and Molten Zn Reviewed

T. Maruyama, T. Itoh

Proc. International Symposium on EcoTopia Science 2011 page： 234 2011.12

Solidification of MnSi_1.73 in A Magnetic Field Reviewed

T. Mitsuo, K. Iwai, T. Itoh

Proc. International Symposium on EcoTopia Science 2011 page： 43 2011.12

Development of Thermal Rectifier Using Unusual Electron Thermal Conductivity Reviewed

R. Nakayama, T. Itoh, T. Takeuchi

Proc. International Symposium on EcoTopia Science 2011 page： 173 2011.12

Synthesis of Ti-doped Higher Manganese Silicide by Pulse Discharge Sintering Reviewed

N. Ono, T. Itoh

Proc. International Symposium on EcoTopia Science 2011 page： 236 2011.12

Thermoelectric Properties of Mg₂Si-Based Compounds Synthesized Using Three Kinds of Magnesium Alloy Reviewed

K. Hagio, T. Itoh

Proc. International Symposium on EcoTopia Science 2011 page： 235 2011.12

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