Zobrazeno 1 - 10
of 155
pro vyhledávání: '"TAKEHIKO ISHIKAWA"'
Autor:
Stephen K. Wilke, Abdulrahman Al-Rubkhi, Chihiro Koyama, Takehiko Ishikawa, Hirohisa Oda, Brian Topper, Elizabeth M. Tsekrekas, Doris Möncke, Oliver L. G. Alderman, Vrishank Menon, Jared Rafferty, Emma Clark, Alan L. Kastengren, Chris J. Benmore, Jan Ilavsky, Jörg Neuefeind, Shinji Kohara, Michael SanSoucie, Brandon Phillips, Richard Weber
Publikováno v:
npj Microgravity, Vol 10, Iss 1, Pp 1-11 (2024)
Abstract The relationships between materials processing and structure can vary between terrestrial and reduced gravity environments. As one case study, we compare the nonequilibrium melt processing of a rare-earth titanate, nominally 83TiO2-17Nd2O3,
Externí odkaz:
https://doaj.org/article/32191774454c47699d22fbd763f4fcd6
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 40, Iss 3, Pp 93-100 (2023)
A study of uncertainty analysis was conducted on four key thermophysical properties of molten Platinum using a noncontacting levitation technique. More specifically, this work demonstrates a detailed reporting of the uncertainties associated with t
Externí odkaz:
https://doaj.org/article/013ca4c9ab844d8e9dd03550f77bb093
Autor:
Jannatun Nawer, Takehiko Ishikawa, Hirohisa Oda, Hideki Saruwatari, Chihiro Koyama, Xiao Xiao, Stephan Schneider, Matthias Kolbe, Douglas M. Matson
Publikováno v:
npj Microgravity, Vol 9, Iss 1, Pp 1-9 (2023)
Abstract A new method for quantifying facility performance has been discussed in this study that encompasses uncertainties associated with thermophysical property measurement. Four key thermophysical properties: density, volumetric thermal expansion
Externí odkaz:
https://doaj.org/article/4ab5c76c575c44599c07fa5a56deefca
Publikováno v:
Frontiers in Materials, Vol 9 (2022)
Due to their high melting temperatures and the risk of contamination from the crucibles, molten oxides which melting temperatures are above 2000 °C can hardly be processed using conventional methods. This explains that their thermophysical propertie
Externí odkaz:
https://doaj.org/article/f22f8908e4884c5390d93137c2112d6b
Autor:
Nevin Brosius, Kevin Ward, Evan Wilson, Zachary Karpinsky, Michael SanSoucie, Takehiko Ishikawa, Satoshi Matsumoto, Ranga Narayanan
Publikováno v:
npj Microgravity, Vol 7, Iss 1, Pp 1-8 (2021)
Abstract The Faraday forcing method in levitated liquid droplets has recently been introduced as a method for measuring surface tension using resonance. By subjecting an electrostatically levitated liquid metal droplet to a continuous, oscillatory, e
Externí odkaz:
https://doaj.org/article/c9ef889c6949402d99948b976b14aa7f
Autor:
Amy Wat, Je In Lee, Chae Woo Ryu, Bernd Gludovatz, Jinyeon Kim, Antoni P. Tomsia, Takehiko Ishikawa, Julianna Schmitz, Andreas Meyer, Markus Alfreider, Daniel Kiener, Eun Soo Park, Robert O. Ritchie
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-12 (2019)
Producing nacre-like ceramics with a tough, non-polymeric matrix remains a challenge. Here, the authors use the reactive wetting of a zirconium-based bulk metallic glass to successfully infiltrate a porous alumina and create a composite with improved
Externí odkaz:
https://doaj.org/article/224a8774e0344a5e98de246cdfa00ef2
Publikováno v:
Metals, Vol 12, Iss 7, p 1129 (2022)
To accurately measure the surface tension of liquid titanium free of contamination from chemical reaction with the supporting materials and dissolution of atmospheric oxygen, the measurement was performed by using electromagnetic levitation (EML) and
Externí odkaz:
https://doaj.org/article/c4c3bf4725f248f0b4208080e6698ff2
Autor:
Takehiko Ishikawa, Chihiro Koyama, Hirohisa Oda, Rina Shimonishi, Tsuyoshi Ito, Paul-François Paradis
Publikováno v:
Metals, Vol 12, Iss 7, p 1126 (2022)
Liquid densities of three lanthanoid sesquioxides (Tm2O3, Yb2O3, and Lu2O3), whose melting temperatures are above 2400 °C, were measured using an electrostatic levitation furnace onboard the International Space Station (ISS). Each sample was positiv
Externí odkaz:
https://doaj.org/article/30663a28146d406e96251591e3baaf3e
Autor:
Shraddha Ganorkar, Yun-Hee Lee, Sooheyong Lee, Yong Chan Cho, Takehiko Ishikawa, Geun Woo Lee
Publikováno v:
AIP Advances, Vol 10, Iss 4, Pp 045114-045114-10 (2020)
The glass forming ability (GFA) of Cu–Zr alloys has been still ambiguous, due to incomplete or lacking thermophysical properties of Cu–Zr liquids in supercooled and stable states, although tremendous effort has been devoted. We provide here the c
Externí odkaz:
https://doaj.org/article/33e965414ecd456a90877c8fbb8c790a
Publikováno v:
Quantum Beam Science, Vol 2, Iss 1, p 5 (2018)
The use of levitation (containerless) techniques can enable new scientific discoveries because deeply undercooled and metastable liquids can be achieved over a wide temperature range. This review article summarizes the state-of-art instrumentation fo
Externí odkaz:
https://doaj.org/article/89d41e93f47640888fadc0cfdc9b23b8