Title:
HIGH-PURITY TITANIUM INGOTS, MANUFACTURING METHOD THEREFOR, AND TITANIUM SPUTTERING TARGET
Document Type and Number:
WIPO Patent Application WO/2013/122069
Kind Code:
A1
Abstract:
High-purity titanium ingots with a purity of at least 99.99% by mass, excluding added elements and gas components. Said titanium ingots are characterized by containing an added component consisting of a total of 0.1 to 100 ppm by mass of one or more non-metallic elements selected from among sulfur, phosphorus, and boron. Said titanium ingots are further characterized in that the amounts of non-metallic elements vary by no more than ±200% between the top, middle, and bottom of a given ingot. A method for manufacturing titanium ingots containing 0.1 to 100 ppm by mass of non-metallic elements, said method being characterized in that when manufacturing high-purity titanium ingots with a purity of at least 99.99% by mass, excluding added elements and gas components, the non-metallic element sulfur, phosphorus, or boron is added to molten titanium in the form of an intermetallic compound or a master alloy. The present invention addresses the problem of providing high-purity titanium having a uniform structure, improved strength, and reduced intra- and inter-ingot variation in non-metallic-element content by adding one or more non-metallic elements selected from among sulfur, phosphorus, and boron.
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Inventors:
YAGI KAZUTO (JP)
HINO EIJI (JP)
SHINDO YUICHIRO (JP)
HINO EIJI (JP)
SHINDO YUICHIRO (JP)
Application Number:
PCT/JP2013/053307
Publication Date:
August 22, 2013
Filing Date:
February 13, 2013
Export Citation:
Assignee:
JX NIPPON MINING & METALS CORP (JP)
International Classes:
B22D21/06; C22B9/22; C22B34/12; C22C1/02; C22C14/00; C23C14/34
Domestic Patent References:
| WO2013027425A1 | 2013-02-28 | |||
| WO2001038598A1 | 2001-05-31 |
Foreign References:
| JP2010235998A | 2010-10-21 | |||
| JP2003253411A | 2003-09-10 | |||
| JPH108245A | 1998-01-13 | |||
| JPH05255843A | 1993-10-05 | |||
| JP2001509548A | 2001-07-24 | |||
| JPH0925565A | 1997-01-28 | |||
| JP2000219922A | 2000-08-08 | |||
| JP2010235998A | 2010-10-21 | |||
| JPH10140339A | 1998-05-26 | |||
| JP3621582B2 | 2005-02-16 | |||
| JP2004518814A | 2004-06-24 | |||
| JPH08225980A | 1996-09-03 | |||
| JPH0925522A | 1997-01-28 | |||
| JP2000204494A | 2000-07-25 |
Other References:
See also references of EP 2772327A4
Attorney, Agent or Firm:
OGOSHI Isamu et al. (JP)
Isamu Ogoshi (JP)
Isamu Ogoshi (JP)
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Claims: