-Thermophysical property data (density, surface tension, viscosity) of high temperature melts have released-

Summary of recorded data

Thermophysical property data of high temperature melts of pure metals have been recorded and released in cooperation with Takehiko Ishikawa, an associate professor at Japan Aerospace Exploration Agency (JAXA). Density, surface tension and viscosity of 22 materials listed below were recorded. These properties have been measured by the electrostatic levitation method. And valuable data of melts such as tungsten has a high melting point exceeding 3,000 degrees celsius have also been recorded.

List of recorded materials

Tungsten, Titanium, Zirconium, Niobium, Vanadium, Cobalt, Nickel, Yttrium, Molybdenum, Ruthenium, Rhodium, Palladium, Hafnium, Tantalum, Rhenium, Osmium, Iridium, Platinum, Lanthanum, Praseodymium, Neodymium, Cerium

Measurement method

Electrostatic levitation (ESL) is the method can measure various properties of molten metal without touching. Containerless float methods, including ESL, can avoid sample contamination because it has no reaction between container and sample. It can also produce supercooled state for solidifying for long periods of time. Therefore it is probably suitable for study on supercooled liquid. To measure density by ESL, calculate volume from camera image and mass divided by volume because its sample shape in suspension is nearly a sphere. Surface tension and viscosity are obtained from attenuance of frequency or vibration from vibrating a few drops of high temperature melt. (See reference 1 for details.)

Reference

1.T.Ishikawa, P.-F.Paradis, T.Itami, S.Yoda, "Non-contact thermophysical property measurements of refractory metals using an electrostatic levitator", Meas. Sci. Technol., 16 (2005) 443-451.
2.T.Ishikawa, P.-F.Paradis, T.Masaki, "The electrostatic levitation method: accomplishments and challenges for the future", Space Utiliz Res, 22 (2006) 128-131. (In Japanese)

Reference materials

1.JAXA Ishikawa Okada Laboratory web site (In Japanese)
2.T.Ishikawa, "Thermophysical property measurements of high temperature melts using electrostatic levitation methods", Proceedings of 2nd Solid-State Thermphysical Properties Club, 2006 (In Japanese)

-Publication article: AIST Today Vol.9 No.11 Techno Infrastructure-

Title: Network Database System for Thermophysical Property Data - It provides about 3,600 materials and 10,000 thermophysical property data -
Author: Yuichiro Yamashita

The introduction of Network Database System for Thermophysical Property Data appears in "AIST Today Vol.9 No.11". It introduces summary of the database, representative data and the browsing software.
Reference URL: http://www.aist.go.jp/aist_j/aistinfo/aist_today/vol09_11/infra/p29/p29.html

-Conference presentation: 30th Japan Symposium on Thermophysical Properties-

Title: Development of thin film thermophysical property database(1)
Author: Yuichiro Yamashita, Tetsuya Baba, Naoyuki Taketoshi, Takashi Yagi, Nobuto Oka(Aoyama Gakuin University), Yuzo Shigesato(Aoyama Gakuin University)

We gave a talk titled above at "Micro/Nano Scale Thermophysical Properties and System Design -V" on the second day of the 30th Japan Symposium on Thermophysical Properties. We examined the material structure configuration of thin film, and devised the data structure of the database based on it. And we also reported the development status of our database. If you want a separate print of this paper, please contact us through "CONTACT" on the menu.
Reference URL: http://jstp2009.naga.sd.keio.ac.jp/

-Journal article: Journal of Japan Society of Information and Knowledge Vol.19 No.2-

Title: Development of Network Database System for Thermophysical Property Data having integrated system
Author: Yuichiro Yamashita, Tetsuya Baba

The paper on our database appeared in "Journal of Japan Society of Information and Knowledge Vol.19 No.2". The contents of this paper was presented at JSIK 17th Annual Meeting held in May 2009. Now, Thermophysical Property Database Developed by JSTP and our database are running on the same program, and the concept of distributed become a growing reality. We reported the expansion of the InetDBGV browsing software and some instructions for use of new functions to seamlessly integrate and browse these databases. This paper is available for download from J-STAGE for free.
Reference URL: http://dx.doi.org/10.2964/jsik.19-104

-e-Therm2008 special issue is published by JJAP-

Special issue of the 1st International Symposium on Thermal Design and Thermophysical Property for Electronics (e-Therm2008) is published as Japanese Journal of Applied Physics (JJAP) Vol.48 No.5 (2009), entitled with "Thermal Design and Thermophysical Property for Electronics". 14 papers are available online in all; 2 Thermal Design of Electronics-related, 5 New Measurement Method and Analysis of Thermophysical Properties-related and 7 Material Process and Physical Properties-related.
The following paper was presented by our database group.
Kenichi Kobayashi, Tetsuya Baba,"Extension of the Response Time Method and the Areal Heat Diffusion Time Method for One-Dimensional Heat Diffusion after Impulse Heating: Generalization Considering Heat Sources inside of Multilayer and General Boundary Conditions",Jpn. J. Appl. Phys. 48 (2009) 05EB05 (10 pages).
Related links: Japan Journal of Applied Physics, e-Therm2008

-TPDS-web/ful tutorial has released-

TPDS-web/full tutorial

Description and tutorial of material tree structure, screen structure, material or property search and graph drawing function has released. Go to tutorial

-InetDBGV ver3.0.6 release-

New function of ver3.0.6

1.Reference search function

It is bossible to search property data by paper title, journal title, issue / year / page and author.

2. Multiple Concurrent Connection & Cross Search Function

It became possible to connect to multiple network thermophysical property database concurrently, for example, JSTP sever and AIST server. Therefore, the function that it is possible to search across multiple database was added.

3. Record of image data

It became possible to record and release the data that is difficult to express in numeric data such as SEM/TEM image or spectral image.