Title:
GRAPHITE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/065018
Kind Code:
A1
Abstract:
Provided is a graphite material which uses Joule heating and has a good balance between resistance at room temperature and resistance at high temperatures without adding metallic impurities. This graphite material has a specific resistivity (ρ25) at 25ºC of 10.0 µΩ·m to 12.0 µΩ·m and a specific resistivity (ρ1600) at 1600ºC of 9.5 µΩ·m to 11.0 µΩ·m. The ratio (ρ1600/ρ25) between the specific resistivities at 25ºC and 1600ºC is 0.85 to 1.00. The minimum specific resistivity (ρmin) is observed at 500ºC to 800ºC. The ratio (ρmin/ρ25) between the minimum specific resistivity and the specific resistivity at 25ºC is 0.70 to 0.80. The graphite material has a bulk density of 1.69 g/cm3 to 1.80 g/cm3.
Inventors:
USUBA HIDEHIKO (JP)
SUZUKI TOSHIYA (JP)
SUZUKI TOSHIYA (JP)
Application Number:
PCT/JP2018/031214
Publication Date:
April 04, 2019
Filing Date:
August 23, 2018
Export Citation:
Assignee:
NIPPON TECHNO CARBON CO LTD (JP)
International Classes:
C04B35/52; C01B32/20; H05B3/14
Foreign References:
| JPH07165467A | 1995-06-27 | |||
| JPH10203869A | 1998-08-04 | |||
| JPS6452674A | 1989-02-28 | |||
| JP2001031473A | 2001-02-06 | |||
| JP2003212655A | 2003-07-30 | |||
| JPS62241815A | 1987-10-22 | |||
| JPH0259468A | 1990-02-28 | |||
| JPH0948665A | 1997-02-18 | |||
| JP2001031473A | 2001-02-06 |
Other References:
IWASHITA, TANSO, 1999, pages 147 - 151
ADACHI, TANSO, vol. 146, 1991, pages 33 - 36
See also references of EP 3549925A4
ADACHI, TANSO, vol. 146, 1991, pages 33 - 36
See also references of EP 3549925A4
Attorney, Agent or Firm:
SASAKI Kazuya et al. (JP)
Download PDF: