Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Motozo Hayakawa"'
Publikováno v:
MATERIALS TRANSACTIONS. 51:899-905
We use the scanning-electron-microscope-electron-backscattering diffraction (SEM-EBSD), atomic force microscopy (AFM), and calculations based on the phenomenological theory of martensite crystallography (PTMC) to study two types of martensite observe
Publikováno v:
Materials Science Forum. :415-422
Y-TZP presents excellent properties at room temperature but these properties decrease as the temperature increases. This paper studies the behavior 20vol%Si3N4-SiC when added in YTZP matrix and heated under no pressure system. Al2O3 and Y2O3 were use
Autor:
Tetsuhiko Onda, Toshihiro Ito, Hideaki Yamana, Motozo Hayakawa, Takayoshi Maeda, Shozo Hirano, Koichi Motoike
Publikováno v:
Biocontrol Science. 13:131-138
The effect of the heating conditions of dolomite powder on its antiviral activity was studied against the H5N3 avian influenza virus. Calcium oxide (CaO) and magnesium oxide (MgO), obtained by the thermal decomposition of dolomite above 800 degrees C
Publikováno v:
Journal of the Ceramic Society of Japan. 116:645-648
Effects of manganese oxide (MnO) addition on the densification of Al2O3 during sintering were studied. Although MnO is commonly used as a sintering aid for Al2O3, it has not been used as a sintering aid to produce transparent alumina. High-density Al
Autor:
Motozo Hayakawa, Masanori Tamaki
Publikováno v:
MATERIALS TRANSACTIONS. 49:1785-1790
Specimen-size dependence of M b temperatures (burst-type martensite transformation temperatures) was measured on many small spherical specimens of 1.5 mol%Y 2 Ο 3 -ZrΟ 2 ranging from 100 to 1000 μm diameter. With decreasing size, both reductions o
Publikováno v:
Materials Science Forum. :2325-2328
Small spherical specimens of ZrO2-1.5mol%Y2O3 with diameters ranging from 150 to 900μm were prepared and the burst temperature was measured on an individual specimen under optical microscope with cooling stage. The range of scatter of the burst temp
Autor:
Masaaki Nagashima, Motozo Hayakawa
Publikováno v:
Materials Science Forum. :535-538
Grain growth behavior in Al2O3 with a small amount of ZrO2 (< 5 vol%) was examined. Grain growth of Al2O3 was retarded by zirconia particles, despite the small amount of added zirconia. The fraction of the zirconia particles embedded within alumina g
Publikováno v:
Advanced Materials Research. :1125-1128
The effect of the processing conditions of dolomite powders on the antiviral activity was studied against H5N3 avian influenza virus. When dolomite was fired in the ambient atmosphere, it decomposed into MgO and CaO by two stages at different tempera
Autor:
Masahiko Akiyama, Masaaki Nagashima, Masahiro Nonami, Yoko Kobayashi, Nobutaka Ishibuchi, Naoki Kawamura, Motozo Hayakawa
Publikováno v:
Journal of JSEE. 55:7-12
Autor:
Shuntaro Suzuki, Koichi Niihara, Tetsuhiko Onda, Tadachika Nakayama, Motozo Hayakawa, Tsuneo Suzuki, Takahiro Akao
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 54:209-212
NiFe2O4+ 0∼100 vol.% NiO sintered bodies were prepared by mixing NiFe2O4 and NiO powders, and subsequent sintering at 800°C in air for 1 hour. Slopes in the temperature dependence of resistivity curves in the system have been found to abruptly cha