Title:
TITANIUM SHEET COATED WITH PROTECTIVE FILM AND HAVING EXCELLENT RESISTANCE AGAINST HIGH-TEMPERATURE OXIDATION AND HIGH-TEMPERATURE SALT DAMAGE, AUTOMOTIVE EXHAUST SYSTEM USING THE SHEET, AND METHOD FOR MANUFACTURE OF THE SHEET OR SYSTEM
Document Type and Number:
WIPO Patent Application WO/2007/043594
Kind Code:
A1
Abstract:
Disclosed is a titanium sheet coated with a protective film, which has excellent resistance against high-temperature oxidation and high-temperature salt damage. Also disclosed is a method for manufacture of the titanium sheet. Further disclosed is an automotive exhaust system using the titanium sheet. The titanium sheet has a protective film formed on its surface. The protective film has a foil-like form and has an average thickness of 0.1 to 5 μm and an average width or average length of 1 to 50 μm. Alternatively, the protective film has a thickness of 1 to 100 μm and comprises particulate metal Al with an average particle diameter of 0.1 to 30 μm dispersed in a silicone resin or silicone grease in an amount of 20 to 60% by mass, and has the following composition: Si: 15-55% by mass; C: 10-45% by mass; and the remainder: unavoidable impurities. Preferably, the base titanium sheet contains one or both of Cu in an amount of 0.5 to 2.1% by mass and Al in an amount of 0.4 to 2.5% by mass. The titanium sheet can be produced by a method comprising brush-coating or spray-coating a silicone resin having the above composition on a titanium sheet to form a protective film on the titanium sheet and then heating the resulting sheet at 150 to 300˚C for 5 to 60 min.
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Inventors:
OTSUKA HIROAKI (JP)
FUJII HIDEKI (JP)
TOKUNO KIYONORI (JP)
ITAMI YOSHIAKI (JP)
DOMOTO TAKASHI (JP)
FUJII HIDEKI (JP)
TOKUNO KIYONORI (JP)
ITAMI YOSHIAKI (JP)
DOMOTO TAKASHI (JP)
Application Number:
PCT/JP2006/320348
Publication Date:
April 19, 2007
Filing Date:
October 05, 2006
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
OTSUKA HIROAKI (JP)
FUJII HIDEKI (JP)
TOKUNO KIYONORI (JP)
ITAMI YOSHIAKI (JP)
DOMOTO TAKASHI (JP)
OTSUKA HIROAKI (JP)
FUJII HIDEKI (JP)
TOKUNO KIYONORI (JP)
ITAMI YOSHIAKI (JP)
DOMOTO TAKASHI (JP)
International Classes:
C23C26/00; B05D7/24; B32B15/08; C22C14/00; F01N13/16
Foreign References:
| JP2000308848A | 2000-11-07 | |||
| JP2004050772A | 2004-02-19 | |||
| JP2003301229A | 2003-10-24 | |||
| JP2006009115A | 2006-01-12 |
Other References:
See also references of EP 1932945A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (Toranomon 37 Mori Bldg. 5-1, Toranomon 3-chome, Minato-k, Tokyo 23, JP)
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