Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Toshiharu Hirai"'
Autor:
Kenji Hirota, Toshiharu Hirai, Katsuhiro Takagi, Issei Morioka, Ryusuke Yasufuku, Kazuhiro Hasezaki, Kenichi Hanasaku, Mongkol Bumrungpon
Publikováno v:
Materials Transactions. 61(10):2025-2029
Undoped PbTe was melted at 1123 K, ball milled (BM) at rotation speeds from 90 to 180 rpm and hot pressed (HP) at 147 MPa and 650 K. Milling at 120 rpm produced the minimum phonon thermal conductivity of 1.29 W m−1 K−1 and average grain size of 0
Autor:
Kenichi Hanasaku, Kazuhiro Hasezaki, Ryusuke Yasufuku, Toshiharu Hirai, Issei Morioka, Katsuhiro Takagi, Kenji Hirota, Masato Kitamura, Mongkol Bumrungpon
Publikováno v:
Ceramics International. 46:13869-13876
p-type Bi0.3Sb1.7Te3.0 thermoelectric materials were fabricated at various ball-milling speeds with yttria-stabilized zirconia (YSZ) ceramic balls in an YSZ vessel, and then hot-pressed. The powders milled at speeds of or higher than 150 rpm were com
Autor:
Mongkol Bumrungpon, Issei Morioka, Ryusuke Yasufuku, Toshiharu Hirai, Kenichi Hanasaku, Kenji Hirota, Katsuhiro Takagi, Kazuhiro Hasezaki
Publikováno v:
Materials Transactions; 2020, Issue 10, p2025-2029, 5p
Autor:
Mitsuaki Kumazawa, Michio Komatsu, Tanemasa Asano, Kohei Nitta, Akihiro Ikeda, Toshiharu Hirai, Ryo Takigawa
Publikováno v:
3DIC
As an alternative to conventional electroplating, we propose TSV filling using the electrophoresis of metal nanoparticles. Colloidal solution of Ag nanoparticles having a high zeta potential has been designed and made up. Via holes for the test exper
Publikováno v:
Bulletin of the Chemical Society of Japan. 54:3735-3738
The Mossbauer technique at the liquid nitrogen temperature (78 K) was applied to the estimation of nonbridging oxygens in FeO4, BO4, and SiO4 units in potassium borosilicate glasses. Mossbauer spectra consist of a quadrupole doublet and a hyperfine s
Publikováno v:
Journal of Non-Crystalline Solids. 43:221-228
Mossbauer studies of potassium borate glasses containing a small amount of iron were performed at dry ice and liquid nitrogen temperatures in order to investigate the physical properties of non-bridging oxygens in the glasses. The Mossbauer spectra a
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