Titanium product and method for producing the same

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United States of America Patent

PATENT NO 11542581
APP PUB NO 20190032183A1
SERIAL NO

16082289

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Abstract

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A titanium product includes an inner layer portion and a surface layer portion joined to the inner layer portion. The surface layer portion has a composition consisting of, by mass %, O: 0.4% or less, Fe: 0.5% or less, Cl: 0.020% or less, the balance: Ti and impurities. The inner layer portion 3 has pores and a composition consisting of, by mass %, O: 0.4% or less, Fe: 0.5% or less, Cl: more than 0.020% and 0.60%, the balance: Ti and impurities. The area fraction of the pores in the inner layer portion in a cross-section perpendicular to the longitudinal direction of the titanium product is more than 0% and not more than 30%. The Cl content (ClI) of the inner layer portion, a thickness (tS) of the surface layer portion, and a thickness (tI) of the inner layer portion satisfy the expression [ClI≤0.03+0.02×tS/tI].

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Patent Owner(s)

Patent OwnerAddress
NIPPON STEEL CORPORATION6-1 MARUNOUCHI 2-CHOME CHIYODA-KU TOKYO 1008071 ?1008071

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujii, Hideki Tokyo, JP 140 728
Kitaura, Tomoyuki Tokyo, JP 7 0
Shirai, Yoshihisa Tokyo, JP 9 4

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