Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate
2007-04-17
2007-04-17
McNeil, Jennifer (Department: 1775)
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
C416S24100B, C420S433000
Reexamination Certificate
active
10494014
ABSTRACT:
Disclosed is a Re alloy coating for diffusion barrier, such as a high-temperature equipment member, which comprises an atomic composition of 30% to less than 90% Re; and an atomic composition of 5% to less than 60% X (wherein X is at least one selected from the group consisting of Cr, Mo and W), with the remainder except for inevitable impurities being at least one selected from the group consisting of Ni, Fe and Co. Even if the alloy coating for diffusion barrier includes a diffusion layer containing at least one of the group consisting of Al, Si and Cr, a desired alloy composition of the alloy coating for diffusion barrier can be assured by a surface coating process and diffused components from the substrate while substantially preventing the diffusion of the elements of the diffusion layer during a homogenizing heat treatment. The alloy coating for diffusion barrier may include a Re-containing-alloy stress relief layer inserted between the film and the substrate. The Re alloy coating can suppress the deterioration of the substrate and the coating layer due to the reaction therebetween to provide an extended life span of the equipment member.
REFERENCES:
patent: 5993980 (1999-11-01), Schmitz et al.
patent: 6299986 (2001-10-01), Meelu
patent: 6306524 (2001-10-01), Spitsberg et al.
patent: 6746782 (2004-06-01), Zhao et al.
patent: 03-120327 (1991-05-01), None
patent: 09-143667 (1997-06-01), None
patent: 11-061439 (1999-03-01), None
patent: WO 97/46734 (1997-12-01), None
Patent Abstracts of Japan, Publication No. 11-061439, dated Mar. 5, 1999.
Patent Abstracts of Japan, Publication No. 03-120327, dated May 22, 1991.
Patent Abstracts of Japan, Publication No. 09-143667, dated Jun. 3, 1997.
Toshio Narita et al.; High-Temperature Corrosion and Protection 2000, 2000 Science Reviews, pp. 351-357, no month given.
Toshio Narita et al; Corrosion 2001, Paper No. 01157, no month given.
Narita; Shoji; Hisamatsu; Yoshida; Fukumoto and Hayashi;Rhenium Coating as a Diffusion Barrier on a Nickel-based Superalloy in High Temperature Oxidation; High-Temperature Corrosion and Protection 2000; pp. 351-357, no month given.
Narita; Hayashi; Shoji; Hisamatsu Yoshida and Fukumoto;Application of Rhenium Coating as a Diffusion Barrier to Improve the High Temperature Oxidation Resistance of Nickel-based Superalloy; Corrosion 2001; Paper No. 01157; pp. 1-11, no month given.
Shoji, Hisamatsu, Hayashi and Narita:Guidelines To Develop Technologies Aiming At Oxidation Resistance In Ultrahigh Temperature Application Of Rhenium-Based Alloy Coating To Nickel-Based Supper Alloy, Report of the 123rd Committee on Heat Resisting Materials and Alloys, Japan Society for the Promotion of Science vol. 41, pp. 127-134(Mar. 2000).
Yoshida, Hisamatsu, Hayashi, Narita, Noguchi, Yakuwa, and Miyasaka:Forming Coating As A Diffusion Barrier And Oxidation Resistance Property, Prepared manuscript for the 47thMaterial And Environment Symposium, pp. 141-142, Japan Society Corrosion Engineering Corrosion Center, Yamaguchi (Oct. 2000).
Hisamatsu, Yoshida, Hayashi, Narita, Murakami, and Harada:Diffusion Barrier Properties Of Re Coating Film And Oxidation Resistance Of Nickel-Based Super-Alloy, Prepared Manuscripts for the 47thMaterial And Environmental Symposium, pp. 153, Japan Society Corrosion Engineering Corrosion Center, Yamaguchi (Oct. 2000).
Yoshida, Hayashi, Narita, Noguchi, Yakuwa, and Miyasaka:Forming Process Of Re Diffusion Barrier And Changes In Structures Of Oxidized Coating, Prepared manuscripts for the 48thMaterial And Environmental Symposium, pp. 395, Japan Society Corrosion Engineering Corrosion Center, Sapporo (Sep. 2001).
Hayashi Shigenari
Narita Toshio
Yakuwa Hiroshi
Yoshioka Takayuki
Baldwin Gordon R.
Ebara Corporation
Japan Science and Technology Agency
McNeil Jennifer
Westerman, Hattori, Daniels & Adrian , LLP.
LandOfFree
Re alloy coating for diffusion barrier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Re alloy coating for diffusion barrier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Re alloy coating for diffusion barrier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3797252