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    Low cost brazes for titanium
    3.
    发明授权
    Low cost brazes for titanium 失效

    公开(公告)号：US07419086B2

    公开(公告)日：2008-09-02

    申请号：US10621071

    申请日：2003-07-14

    申请人： Derek Raybould ,  Paul Chipko ,  Matthew Pohlman

    发明人： Derek Raybould ,  Paul Chipko ,  Matthew Pohlman

    IPC分类号： B23K35/24

    CPC分类号： B23K35/325 ,  B23K35/005 ,  B23K35/0205 ,  B23K35/0222 ,  B23K35/0244 ,  B23K35/0255 ,  B23K35/32

    摘要： A braze material and method of brazing titanium metals. The material may consist of Ti, Ni, Cu Zr, PM and M where PM is a precious metal and M may be Fe, V, Cr, Co, Mo, Nb, Mn, Si, Sn, Al, B, Gd, Ge or combinations thereof, with the (Cu+PM)/Ni ratio around 0.9. Optionally, a second brazing may be performed to rebraze any braze joint that did not braze successfully. The second brazing material has a lower braze temperature than the first and may consist of a mixture of Ti, Ni, Cu, Zr PM and M with from 1–20 wt % more Zr, PM, M or combinations thereof than the first braze. The braze material may be placed on a base material, in a vacuum furnace, and heated to form a braze joint between the braze and base material. The heating step may occur from about 800–975° C. and over 3 to 15 minutes.

    Low cost brazes for titanium
    4.
    发明申请
    Low cost brazes for titanium 失效

    公开(公告)号：US20060118600A1

    公开(公告)日：2006-06-08

    申请号：US11343604

    申请日：2006-01-31

    申请人： Derek Raybould ,  Paul Chipko ,  Matthew Pohlman

    发明人： Derek Raybould ,  Paul Chipko ,  Matthew Pohlman

    IPC分类号： A47J36/02

    CPC分类号： B23K35/325 ,  B23K35/005 ,  B23K35/0205 ,  B23K35/0222 ,  B23K35/0244 ,  B23K35/0255 ,  B23K35/32

    摘要： A braze material and method of brazing titanium metals. The material may consist of Ti, Ni, Cu Zr, PM and M where PM is a precious metal and M may be Fe, V, Cr, Co, Mo, Nb, Mn, Si, Sn, Al, B, Gd, Ge or combinations thereof, with the (Cu+PM)/Ni ratio around 0.9. Optionally, a second brazing may be performed to rebraze any braze joint that did not braze successfully. The second brazing material has a lower braze temperature than the first and may consist of a mixture of Ti, Ni, Cu, Zr PM and M with from 1-20 wt % more Zr, PM, M or combinations thereof than the first braze. The braze material may be placed on a base material, in a vacuum furnace, and heated to form a braze joint between the braze and base material. The heating step may occur from about 800-975° C. and over 3 to 15 minutes.

    Oxidation barrier coatings for silicon based ceramics
    7.
    发明授权
    Oxidation barrier coatings for silicon based ceramics 有权
    硅基陶瓷的氧化阻隔涂层

    公开(公告)号：US07323247B2

    公开(公告)日：2008-01-29

    申请号：US10719629

    申请日：2003-11-21

    申请人： Derek Raybould ,  Chien-Wei Li ,  Bjoern Schenk ,  Thomas E. Strangman ,  Paul Chipko ,  Lee Poandl

    发明人： Derek Raybould ,  Chien-Wei Li ,  Bjoern Schenk ,  Thomas E. Strangman ,  Paul Chipko ,  Lee Poandl

    IPC分类号： B32B9/00

    CPC分类号： F23R3/007 ,  C04B41/009 ,  C04B41/52 ,  C04B41/89 ,  C23C28/042 ,  C23C28/048 ,  F01D5/288 ,  F05D2230/312 ,  F05D2300/134 ,  F05D2300/21 ,  F23M2900/05004 ,  Y10T428/30 ,  C04B35/565 ,  C04B35/584 ,  C04B41/4531 ,  C04B41/5066 ,  C04B41/4529 ,  C04B41/5059 ,  C04B41/522 ,  C04B41/4556 ,  C04B41/5035 ,  C04B41/4535 ,  C04B41/5024 ,  C04B41/5027 ,  C04B41/5045 ,  C04B41/4527 ,  C04B41/5042

    摘要： A protective barrier coating system including a diffusion barrier coating and an oxidation barrier coating and method for use in protecting silicon-based ceramic turbine engine components. A complete barrier coating system includes a thermal barrier coating of stabilized zirconia and an environmental barrier coating of an alloyed tantalum oxide. The oxidation barrier coating includes a layer of metallic silicates formed on a substrate of silicon nitride or silicon carbide to be protected. The oxidation barrier coating can include silicates of scandium, ytterbia or yttrium. The oxidation barrier coating may also include an inner layer of Si2ON2 between the diffusion barrier and the metallic silicate layer. The oxidation barrier coating can be applied to the substrate by spraying, slurry dipping and sintering, by a sol-gel process followed by sintering, by plasma spray, or by electron beam-physical vapor deposition. The diffusion layer of essentially pure Si3N4 can be applied to the substrate to prevent the migration of damaging cations from the protective layers to the substrate and is preferably formed by chemical vapor deposition. A method for protecting silicon based substrates can comprise a step of forming an oxidation barrier coating on a substrate, where a step of forming the oxidation barrier includes a step of sintering the oxidation barrier and substrate in a wet gas containing hydrogen.

    摘要翻译： 一种包括扩散阻挡涂层和氧化屏障涂层的保护性屏障涂层系统以及用于保护硅基陶瓷涡轮发动机部件的方法。 完整的阻隔涂层系统包括稳定的氧化锆的隔热涂层和合金化氧化钽的环境屏障涂层。 氧化阻挡涂层包括在待保护的氮化硅或碳化硅的衬底上形成的金属硅酸盐层。 氧化屏障涂层可以包括钪，镱或钇的硅酸盐。 氧化阻隔涂层还可以包括扩散阻挡层和金属硅酸盐层之间的Si 2 2 2 N 2的内层。 通过喷雾，浆料浸渍和烧结，通过溶胶 - 凝胶法烧结，通过等离子体喷涂，或通过电子束 - 物理气相沉积，可将氧化阻隔涂层施加到基材上。 可以将基本上纯的Si 3 N 4 N 4的扩散层施加到基底上，以防止损伤的阳离子从保护层迁移到基底，并且优选地由化学 气相沉积。 用于保护硅基基板的方法可以包括在基板上形成氧化阻挡涂层的步骤，其中形成氧化屏障的步骤包括在含氢的湿气中烧结氧化阻挡层和基板的步骤。