Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Toshitaka Sakurai"'
Publikováno v:
Journal of the European Ceramic Society. 30:1925-1930
Single-phase β-sialon powders (z = 2–4) have been prepared with homogeneous compositions by the combustion synthesis. The raw materials (Si, Al and SiO2) were combusted under N2 pressure of 1 MPa. Without using a diluent, the reaction temperatures
Autor:
Shinichi Kikkawa, Toshitaka Sakurai, Takashi Takeda, Akira Yoshiasa, Yoshinari Miyamoto, Shinji Ohtaki
Publikováno v:
Journal of Alloys and Compounds. 450:152-156
Manganese doping of gallium oxynitride was investigated to obtain a magnetic semiconductor by nitriding a precursor in ammonia flow. The precursor was obtained by prefiring a mixed gel made of Mn 2+ and Ga 3+ nitrates and citric acid in aqueous solut
Publikováno v:
Journal of the Society of Materials Science, Japan. 57:1248-1252
Single-phase (β-SiAlON (Si4Al2O2N6, z = 2) powder has been prepared by the combustion synthesis method. The raw materials (Si, Al and SiO2) were combusted with different ratios of (β-SiAlON (z = 1) diluent (0, 10, 20, 30, 40, 50wt%) in 1MPa of N2 p
Autor:
Shinichi Kikkawa, Takashi Takeda, Kazuteru Nagasaka, Yoshinari Miyamoto, Toshitaka Sakurai, Mark Bailey
Publikováno v:
Journal of Solid State Chemistry. 180:1984-1989
Gallium oxynitride, isostructural to hexagonal gallium nitride (h-GaN), was obtained by ammonia nitridation of a precursor prepared from the addition of citric acid to an aqueous solution of gallium nitrate. Gallium oxynitride produced at 750 deg. C
Publikováno v:
Materials Science and Engineering: A. 416:40-44
Aluminum nitride powder produced by the combustion synthesis (SHS) usually contains coarse particles because of its high reaction temperature. These particles make it difficult to achieve sintering. To improve sinterability, the reaction temperature
Autor:
Toshitaka Sakurai, Yoshinari Miyamoto
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 52:757-762
The reaction temperature in the combustion synthesis of AlN was controlled by adding H2 gas to the reactant N2 gas in order to reduce the particle size of the products. The addition of 20 vol.% H2 to reactant N2 gas decreased the combustion temperatu
Publikováno v:
Journal of the Society of Materials Science, Japan. 54:574-579
The aluminum nitride powder synthesized by combustion synthesis (SHS) process usually includes course particles because of its high reaction temperature. These powders are not suitable for sintering, and strong pulverization is necessary. The reducti
Autor:
Shinichi Kikkawa, Kazuteru Nagasaka, Yoshinari Miyamoto, Takashi Takeda, Toshitaka Sakurai, Mark Bailey
Publikováno v:
ChemInform. 39
Gallium oxynitride, isostructural to hexagonal gallium nitride (h-GaN), was obtained by ammonia nitridation of a precursor prepared from the addition of citric acid to an aqueous solution of gallium nitrate. Gallium oxynitride produced at 750 deg. C
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 18:072003
Pure ?-sialon powders with the controlled z values (z = 2? 4) were successfully prepared from stoichiometric mixtures of constituent elements (Si, Al and SiO2) under a nitrogen pressure of 1 MPa by the combustion synthesis (CS) method. The raw materi