Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Koji Tsukuma"'
Publikováno v:
Journal of the American Ceramic Society. 91:2611-2616
Effects of residual pores and optical birefringence on transmission through translucent polycrystalline alumina have been studied with the Mie scattering theory. The in-line and total forward transmissions of the translucent polycrystalline alumina w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a2f5eaf0072c2291178dc35b1a831a0
https://doi.org/10.1111/j.1551-2916.2008.02527.x
https://doi.org/10.1111/j.1551-2916.2008.02527.x
Publikováno v:
J. Am. Ceram. Soc.. 91:1634-1639
Structural study with synchrotron X-ray diffractometry was made on phase separation phenomena in 2, 3, and 4 mol% Y2O3-stabilized tetragonal ZrO2 polycrystal (abbreviated as 2, 3, and 4Y-TZP, respectively). The sintered body of 3Y and 4Y-TZP underwen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e19332d31d3e47fd2fdf5b691ffb72d7
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100570382
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100570382
Publikováno v:
Journal of the American Ceramic Society. 91:813-818
Highly transparent 8 mol% Y2O3–ZrO2 (8Y) ceramics were fabricated by the hot isostatic pressing method. The transmission in a visible light region was comparable to that of a single crystal. In this work, the microstructural relationship between pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::337a6bc51b33096c26df1548cc2574a1
https://doi.org/10.1111/j.1551-2916.2007.02202.x
https://doi.org/10.1111/j.1551-2916.2007.02202.x
Autor:
Koji Tsukuma
Publikováno v:
Journal of the Ceramic Society of Japan. 114:802-806
Transparent MgAl 2 O 4 spinel ceramics were fabricated by hot isostatic pressing of the sintered materials composed of fine grains. Since the fine-grained sintered materials were difficult to obtain from pure powders at low temperatures, the additive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8ba53f0159af2cd089176a384233d06
https://doi.org/10.2109/jcersj.114.802
https://doi.org/10.2109/jcersj.114.802
Autor:
Koji Tsukuma, Isao Yamashita
Publikováno v:
Journal of the Ceramic Society of Japan. 119:133-135
We studied the effects of residual pores on the transparency of cubic zirconia ceramics by applying Mie scattering theory. The optical haze value H, defined as the diffuse transmission divided by the total forward transmission, was calculated as a fu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61f5a3745ffaa3a3bb607fa74671e362
https://doi.org/10.2109/jcersj2.119.133
https://doi.org/10.2109/jcersj2.119.133
Autor:
Koji Tsukuma, Tomoyuki Akiyama
Publikováno v:
Journal of Non-Crystalline Solids. 265:199-209
Incorporation of nitrogen in silica glass was conducted by sintering porous bodies of silica soot with absorbed NH3 gas. The properties, such as high temperature viscosity, internal friction and Young’s modulus, were evaluated and compared with tho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eafa00cdb568337d4e7c327d4b7c314e
https://doi.org/10.1016/s0022-3093(00)00005-3
https://doi.org/10.1016/s0022-3093(00)00005-3
Autor:
Kenji Kamo, Koji Tsukuma
Publikováno v:
Journal of the Ceramic Society of Japan. 108:241-244
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8fe44a60453f4ae894fbb06965bbea7
https://doi.org/10.2109/jcersj.108.1255_241
https://doi.org/10.2109/jcersj.108.1255_241
Autor:
Kenji Kamo, Koji Tsukuma
Publikováno v:
Journal of the Ceramic Society of Japan. 108:882-887
Bubble-containing silica glasses were fabricated by sintering amorphous silica powders with small amount of silicon nitride powders. Sintering was performed at 1800°C in N2 gas atmosphere. It was found that the addition of Si3N4 is effective for for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b69b46fc63003dcb6ea4d3f70edf9b4a
https://doi.org/10.2109/jcersj.108.1262_882
https://doi.org/10.2109/jcersj.108.1262_882
Autor:
Koji Tsukuma, Kenji Kamo
Publikováno v:
Journal of the Ceramic Society of Japan. 108:431-434
Bubbles are essential in the formation of opaque silica glass, because opacity results from light scattering by bubbles dispersed throughout the glass matrix. In this sintering study of slip casting of a silica compact, the formation of bubbles was o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc7c155b7d4c6fe139091ebd9e2a9ede
https://doi.org/10.2109/jcersj.108.1257_431
https://doi.org/10.2109/jcersj.108.1257_431
Publikováno v:
Journal of the Ceramic Society of Japan. 108:525-529
Physical, chemical and mechanical properties of opaque silica glass fabricated by the slip casting method were evaluated and compared with commercial products manufactured by the fusion method. The slip casting sample contained a large number of smal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::181c5ee25281f67de76b2a334492014b
https://doi.org/10.2109/jcersj.108.1258_525
https://doi.org/10.2109/jcersj.108.1258_525