Titanium material, production thereof, and exhaust pipe

Details Titanium material, production thereof, and exhaust pipe Titanium material, production thereof, and exhaust pipe

2006-01-10

2006-01-10

Koehler, Robert R. (Department: 1775)

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

C428S660000, C428S926000, C428S939000, C138S145000, C138S146000, C148S519000, C148S535000

Reexamination Certificate

active

06984457

ABSTRACT:
(1) A titanium material composed of a substrate of pure titanium or titanium alloy and an aluminum-containing layer formed thereon having a thickness no smaller than 1 μm and containing no less than 90 mass % aluminum or aluminum plus silicon. (2) A titanium material composed of a substrate of pure titanium or titanium alloy and an aluminum-containing layer formed thereon having a thickness no smaller than 1 μm and containing no less than 90 mass % aluminum or aluminum plus silicon, with a layer of Al—Ti intermetallic compound interposed between them. (3) A titanium material as defined in (1) wherein the substrate contains 0.5-10 mass % aluminum. (4) A titanium material as defined in (1) wherein that surface of the substrate with which the aluminum-containing layer is in contact contains 20-50 atomic % nitrogen. (5) A titanium material as defined in (1) wherein a layer of aluminum nitride is formed in the interface between the substrate and the aluminum-containing layer. (6) An exhaust pipe for two- or four-wheeled vehicles which is made of the titanium material defined above.

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patent: 10-99976 (1998-04-01), None

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