COLORED PURE TITANIUM OR TITANIUM ALLOY HAVING LOW SUSCEPTIBILITY TO DISCOLORATION IN ATMOSPHERIC ENVIRONMENT

Title:

COLORED PURE TITANIUM OR TITANIUM ALLOY HAVING LOW SUSCEPTIBILITY TO DISCOLORATION IN ATMOSPHERIC ENVIRONMENT

Document Type and Number:

WIPO Patent Application WO/2006/129737

Kind Code:

A1

Abstract:

This invention provides a colored pure titanium or titanium alloy having low susceptibility to discoloration in an atmospheric environment that, even when titanium is used in a severe acidic rain environment such as roofs and wall materials, has excellent anti-discoloration properties and does not undergo a deterioration in the level of design over a long period of time. The colored pure titanium or titanium alloy having low susceptibility to discoloration in an atmospheric environment is a colored titanium produced by anode oxidation and is characterized in that the average phosphorus content in a range of 40 nm from the surface of a titanium oxide layer formed on the surface of titanium is not more than 5.5 atomic% and the average carbon content in a depth range of 100 nm from the surface of titanium is 3 to 15 atomic%.

Inventors:

KANEKO MICHIO (JP)
TOKUNO KIYONORI (JP)
WADA TAKAO (JP)
HASEGAWA MITSUYUKI (JP)
YAMAGISHI KAZUO (JP)

Application Number:

PCT/JP2006/310938

Publication Date:

December 07, 2006

Filing Date:

May 25, 2006

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)
KANEKO MICHIO (JP)
TOKUNO KIYONORI (JP)
WADA TAKAO (JP)
HASEGAWA MITSUYUKI (JP)
YAMAGISHI KAZUO (JP)

International Classes:

C22C14/00; C23C28/00; C25D11/26

Foreign References:

JP2002012962A	2002-01-15
JP2002047589A	2002-02-15
JP2004137514A	2004-05-13

Other References: