Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Hitofumi Taniguchi"'
Autor:
Yukihiro Kanechika, Hitofumi Taniguchi, T. Honma, Masasuke Takata, Masanobu Azuma, Tomoichiro Okamoto, Yuichiro Kuroki
Publikováno v:
Key Engineering Materials. 388:261-264
Aluminum nitride ceramics were sintered with 1.0 and 4.8 mass% Ca3Al2O6 (C3A) as a sintering additive. Temperature dependence of cathodoluminescence (CL) for the ceramics was investigated in order to obtain information on lattice defects. The CL peak
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba189093f5395896c3be2649b1a0a014
https://doi.org/10.4028/www.scientific.net/kem.388.261
https://doi.org/10.4028/www.scientific.net/kem.388.261
Autor:
Tomoichiro Okamoto, T. Honma, Masanobu Azuma, Yuichiro Kuroki, Yukihiro Kanechika, Hitofumi Taniguchi, Masasuke Takata
Publikováno v:
Ceramics International. 34:943-946
Aluminum nitride ceramics were prepared by sintering with 0–4.8 mass% of Ca 3 Al 2 O 6 (C 3 A) as a sintering additive. The transmittance in the range of 260–550 nm increased with increasing amount of C 3 A. The cathodoluminescence intensity attr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e29069ca9651656d626e0e82ed07f13
https://doi.org/10.1016/j.ceramint.2007.09.062
https://doi.org/10.1016/j.ceramint.2007.09.062
Autor:
T. Honma, Yukihiro Kanechika, Masasuke Takata, Hitofumi Taniguchi, Takashi Tooyama, Yuichiro Kuroki, Masanobu Azuma, Tomoichiro Okamoto
Publikováno v:
Advanced Materials Research. :179-182
Aluminum nitride (AlN) ceramics with various amounts of Ca3Al2O6 (C3A) as a sintering additive were sintered at 1880°C for 50 h in N2 atmosphere. The thermal conductivity of AlN ceramics increased with increasing amount of C3A in the range from 0.5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54483a79ccd7ee4741e38a61ed5ea9fb
https://doi.org/10.4028/www.scientific.net/amr.11-12.179
https://doi.org/10.4028/www.scientific.net/amr.11-12.179
Autor:
Hitofumi Taniguchi, T. Honma, Masasuke Takata, Yuichiro Kuroki, Tomoichiro Okamoto, Yukihiro Kanechika, Masanobu Azuma
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 21:012022
Coloration of translucent AlN ceramics sintered with Ca3Al2O6 as a sintering additive occurs by exposure to ultraviolet light. The trap related to this coloration was investigated by thermoluminescence (TL) measurements. With increasing oxygen conten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd5771039ef2fc2f31ffdebfaca934c6
https://doi.org/10.1088/1757-899x/21/1/012022
https://doi.org/10.1088/1757-899x/21/1/012022
Autor:
Tsunemasa Taguchi, Ayako Kai, Yoichi Yamada, Hitofumi Taniguchi, Fumio Sasaki, Toshiro Tani, Kiyohiko Okada, Shunsuke Kobayashi
Publikováno v:
Japanese Journal of Applied Physics. 35:1424
Hexagonal gallium nitride (GaN) films are grown on aluminum nitride ceramic substrates in gallium and nitrogen plasmas excited by microwaves. The band-edge photoluminescence properties of the GaN films are investigated at 77 K and at room temperature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fb44dccb1a9cbc437b9482978ed599e
https://doi.org/10.1143/jjap.35.1424
https://doi.org/10.1143/jjap.35.1424
Publikováno v:
Bulletin of the Chemical Society of Japan. 52:2195-2198
Heats of adsorption of gaseous triphenylchloromethane (TPC) onto silica–alumina surface were determined from the heat evolved with the immersion of silica–alumina into TPC–hexane solution. The heat of dissolution and the heat of sublimation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de0d1506a36f933de5e5c089e203ba61
https://doi.org/10.1246/bcsj.52.2195
https://doi.org/10.1246/bcsj.52.2195
Publikováno v:
Journal of The Japan Petroleum Institute. 22:67-72
The differential heats of adsorption of ammonia on solid acids were measured, and the surface acid strength distribution and acidity were evaluated. The solid acids studied were silicaalumina, zeolite-containing silica-alumina, sodium-poisoned silica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8618080020a41fffb0de69641faf70b
https://doi.org/10.1627/jpi1958.22.67
https://doi.org/10.1627/jpi1958.22.67
Publikováno v:
Bulletin of the Chemical Society of Japan. 51:1965-1969
The differential heats of adsorption of ammonia on several solid acids were measured by means of a twin conduction type microcalorimeter, and surface acid strength distribution and acidity were evaluated. Silica–alumina showed very high initial hea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d90c8dbdaebc680a54bef4adcda1b92
https://doi.org/10.1246/bcsj.51.1965
https://doi.org/10.1246/bcsj.51.1965
Publikováno v:
Bulletin of the Chemical Society of Japan. 53:362-365
Heats of adsorption of ammonia on specifically poisoned silica–alumina were measured by use of a twin-conduction-type calorimeter in order to elucidate the adsorption energy and acid strength distributions for both Bronsted (hereafter referred to a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c5b760cddf1ec30a3ca69f5e1911571
https://doi.org/10.1246/bcsj.53.362
https://doi.org/10.1246/bcsj.53.362
Publikováno v:
Bulletin of the Chemical Society of Japan. 52:2849-2852
Surface acidities and acid strength distributions of amorphous silica–alumina, Y-type faujasite and mordenite have been examined by measuring the differential heats of adsorption of ammonia. The number of acid sites with adsorption heats higher tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3a0232fa48553a70935a85fb32bb9f3
https://doi.org/10.1246/bcsj.52.2849
https://doi.org/10.1246/bcsj.52.2849