Title:
Fe−Ni BASE ALLOY FOR SHADOW MASK RAW MATERIAL EXCELLENT IN CORROSION RESISTANCE AND SHADOW MASK MATERIAL
Document Type and Number:
WIPO Patent Application WO/2003/035920
Kind Code:
A1
Abstract:
A Fe−Ni base alloy for a shadow mask raw material excellent in the resistance to corrosion having a chemical composition, in wt %: C ≤ 0.01 %, Si: 0.01 to 0.1 %, Mn: 0.01 to 0.1 %, Ni: 35 to 37 %, Cr ≤ 0.1 %, Nb: 0.01 to 1.0 %, S ≤ 0.0020 %, Al ≤ 0.005 % and balance: Fe and inevitable impurities&semi and a shadow mask material which comprises the Fe−Ni base alloy, wherein the alloy exhibits a 0.2 % yield strength of 300 N&sol mm2 or more, a thermal expansion coefficient in the range of 30 to 100&ring C of 1.0 X 10−6&sol &ring C or less. The Fe−Ni base alloy for a shadow mask raw material and the shadow mask material are free from the formation of rust even when exposed to the atmosphere for a long time due to transportation or the like after a bright annealing step as an intermediate step of the production of the material.
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Inventors:
NISHI TORU (JP)
OMORI TSUTOMU (JP)
KOBAYASHI YUTAKA (JP)
OMORI TSUTOMU (JP)
KOBAYASHI YUTAKA (JP)
Application Number:
PCT/JP2002/010718
Publication Date:
May 01, 2003
Filing Date:
October 16, 2002
Export Citation:
Assignee:
NIPPON YAKIN KOGYO CO LTD (JP)
NISHI TORU (JP)
OMORI TSUTOMU (JP)
KOBAYASHI YUTAKA (JP)
NISHI TORU (JP)
OMORI TSUTOMU (JP)
KOBAYASHI YUTAKA (JP)
International Classes:
C22C38/00; C22C38/02; C22C38/04; C22C38/08; C22C38/12; C22C38/40; C22C38/48; C22C38/50; H01J29/07; (IPC1-7): C22C38/00; C22C38/48; C22C38/50; H01J29/07
Foreign References:
| JP2001181796A | 2001-07-03 | |||
| JPH07102345A | 1995-04-18 | |||
| JP2001040454A | 2001-02-13 | |||
| US5916380A | 1999-06-29 | |||
| JPH05186853A | 1993-07-27 |
Other References:
See also references of EP 1445341A4
Attorney, Agent or Firm:
Ogawa, Junzo (8-9 Ginza 2-chom, Chuo-ku Tokyo, JP)
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