Fe-Ni based material for shadow mask
AssigneeNippon Yakin Kogyo Co., Ltd.
InventorsTatsuya Itoh, Tsutomu Omori
Life of this patent
Estimating the term…
Abstract
It is a Fe—Ni based shadow mask material of Fe—Ni alloy or Fe—Ni—Co alloy used as a material for a color television cathode tube or the like, and relates to a material wherein the material has a texture that an X-ray intensity ratio Ir of cubic orientation (100)<001> to twinning orientation (221)<212> thereof in a (111) pole figure is a range of 0.5-5:1 and segregation of Ni, Mn or the like is less, and a section cleanness defined according to JIS G0555 is made to be not more than 0.05% to reduce the occurrence of streak or mottling in the etching.
Claims21
A Fe—Ni based material for shadow mask of an iron-nickel alloy containing Ni:
- 34-38 wt %, characterized in that the material has a texture that an X-ray intensity ratio Ir of cubic orientation (100)<001> to twinning orientation (221)<212> thereof in a (111) pole figure is a range of 0.5-5:1 and a section cleanness defined according to JIS G0555 is not more than 0.05%.
A Fe—Ni based material for shadow mask of an iron-nickel alloy having a composition of C:
- not more than 0.1 wt %, Si:
- not more than 0.5 wt %, Mn:
- not more than 1.0 wt %, Ni:
- 34-38 wt % and the remainder being substantially Fe, characterized in that the material has a texture that an X-ray intensity ratio Ir of cubic orientation (100)<001> to twinning orientation (221)<212> thereof in a (111) pole figure is a range of 0.5-5:1 and a section cleanness defined according to JIS G0555 is not more than 0.05%.
A Fe—Ni—Co based material for shadow mask of an iron-nickel-cobalt alloy having a composition of Ni:
- 23-38 wt %, Co:
- not more than 10 wt % and the remainder being substantially Fe, characterized in that the material has a texture that an X-ray intensity ratio Ir of cubic orientation (100)<001> to twinning orientation (221)<212> thereof in a (111) pole figure is a range of 0.5-5:1 and a section cleanness defined according to JIS G0555 is not more than 0.05%.
A Fe—Ni based material for shadow mask of an iron-nickel-alloy containing Ni:
- 34-38 wt %, Si:
- not more than 0.5 wt %, Mn:
- not more than 1.0 wt % and P:
- not more than 0.1 wt %, characterized in that the material has a texture that an X-ray intensity ratio Ir of cubic orientation (100)<001> to twinning orientation (221)<212> thereof in a (111) pole figure is a range of 0.5-5:1 and a Ni segregation amount CNis in a thickness direction is not more than 0.30% and a maximum Ni segregation amount CNimax is not more than 1.5%.
Dependencies are inferred from the claim text.