COLORED PURE TITANIUM OR TITANIUM ALLOY HAVING LOW SUSCEPTIBILITY TO DISCOLORATION IN ATMOSPHERIC ENVIRONMENT,申请号EP20060756858-传众专利搜索

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

申请公布号：EP1887094(A1)

申请号：EP20060756858

申请日期：2006.05.25

申请公布日期：2008.02.13

申请人：

NIPPON STEEL CORPORATION

发明人：KANEKO, MICHIO;TOKUNO, KIYONORI;WADA, TAKAO;HASEGAWA, MITSUYUKI;YAMAGISHI, KAZUO

分类号：C22C14/00;C23C28/00;C23C30/00;C23G1/02;C23G1/10;C25D11/26

主分类号：C22C14/00

摘要：<p>The present invention provides colored pure titanium or titanium alloy having low susceptibility to discoloration in an atmospheric environment exhibiting a superior resistance to discoloration even when the titanium is used in an environment of harsh acid rain such as a roof or wall material and free from deterioration of the aesthetic appearance over a long period of time, that is, colored pure titanium obtained by the anodic oxidation method, that is, colored pure titanium or titanium alloy having low susceptibility to discoloration in an atmospheric environment characterized by having an average phosphorus content in a range of 40 nm from a surface of a titanium oxide layer formed on the titanium surface of 5.5 atomic% or less and by having an average carbon concentration in a range of a depth of 100 nm from the titanium surface of 3 to 15 atomic%.</p>