Title:
TITANIUM SHEET AND COPPER FOIL PRODUCTION DRUM
Document Type and Number:
WIPO Patent Application WO/2020/213715
Kind Code:
A1
Abstract:
This titanium sheet has a chemical composition containing, by mass%, O: 0% to 0.400%, Cu: 0% to 1.50%, Fe: 0% to 0.500%, N: 0.100% or less, C: 0.080% or less, H: 0.0150% or less, and the balance Ti and impurities. The titanium sheet has a metallographic structure containing α-phases, the crystalline structure of which is a hexagonal close-packed structure, wherein: an average crystal grain size is 40 µm or less; when a normal of the (0001) plane of a crystal having the hexagonal close-packed structure is defined as c-axis, the area ratio of crystal grains the c-axes of which tilt within an angle of 40° from the direction of a normal line of the sheet surface to all crystal grains is 70% or higher; and a standard deviation of a grain size distribution based on logarithms of crystal grain sizes in µm units is 0.80 or less.
Inventors:
KUNIEDA TOMONORI (JP)
GOTO MAMORU (JP)
KURODA ATSUHIKO (JP)
TAKETSU KATSUHIKO (JP)
KARATO AKIO (JP)
GOTO MAMORU (JP)
KURODA ATSUHIKO (JP)
TAKETSU KATSUHIKO (JP)
KARATO AKIO (JP)
Application Number:
PCT/JP2020/016888
Publication Date:
October 22, 2020
Filing Date:
April 17, 2020
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C22C14/00; C22F1/18; C22F1/00
Domestic Patent References:
| WO2019043882A1 | 2019-03-07 | |||
| WO2018003098A1 | 2018-01-04 | |||
| WO2016140231A1 | 2016-09-09 |
Foreign References:
| JP2013001973A | 2013-01-07 | |||
| JP2012112017A | 2012-06-14 | |||
| JP2010202952A | 2010-09-16 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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