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    Method of estimating the lifetime of thermal barrier coatings
    1.
    发明授权
    Method of estimating the lifetime of thermal barrier coatings 失效
    估算热障涂层寿命的方法

    公开(公告)号：US06681639B2

    公开(公告)日：2004-01-27

    申请号：US10120416

    申请日：2002-04-12

    申请人： Otto Bernhardi ,  Roland Muecke ,  Hans Joachim Schmutzler ,  Christoph Sommer ,  Marianne Sommer

    发明人： Otto Bernhardi ,  Roland Muecke ,  Hans Joachim Schmutzler ,  Christoph Sommer ,  Marianne Sommer

    IPC分类号： G01N332

    CPC分类号： C23C28/3215 ,  C23C4/12 ,  C23C28/345 ,  C23C28/3455 ,  G01N17/00

    摘要： A method of estimating the lifetime of a thermal barrier coating (14), which is applied to the surface of a member subjected to cyclical thermal loads, especially a vane and/or blade of a gas turbine, by means of a bond coat (12) lying in between the coating and the member, leads to more accurate results with simplified calculation by determining, in a first step, the amplitude of the normal stress (&Dgr;&sgr;n) perpendicular to the interface between the bond coat (12) and the thermal barrier coating (14) during cyclical loading, and calculating, in a second step, the number Ni of cycles to failure for every normal stress amplitude (&Dgr;&sgr;n) in accordance with the formula N i ⁢   = C ⁡ ( △σ n σ 0 ) m where &sgr;0 is a stress reference value and C(&dgr;ox) and m(&dgr;ox) are material parameters, which depend on the thickness (&Dgr;ox) of an oxide layer (13), which is located between the thermal barrier layer (14) and the bond coat (12) and grows with the cyclical loading.

    摘要翻译： 一种估计热障涂层（14）的寿命的方法，其通过粘合涂层（12）施加到受到循环热负荷的构件的表面，特别是燃气轮机的叶片和/或叶片 ）通过在第一步骤中确定垂直于粘合涂层（12）和热障壁之间的界面的法向应力（Deltasigman）的振幅，通过简化的计算得到更准确的结果， 在循环加载期间涂覆（14），并且在第二步骤中，计算根据公式sigma0的每个法向应力幅度（Deltasigman）的失效循环次数Ni是应力参考值，C（deltaox）和m（ deltaox）是材料参数，其取决于位于热阻层（14）和粘合涂层（12）之间的氧化物层（13）的厚度（Deltaox），并以循环负载生长。

    High temperature protective coating
    3.
    发明授权
    High temperature protective coating 有权
    高温保护涂层

    公开(公告)号：US06280857B1

    公开(公告)日：2001-08-28

    申请号：US09343426

    申请日：1999-06-30

    申请人： Marianne Sommer ,  Hans-Peter Bossmann ,  Maxim Konter ,  Peter Holmes ,  Christoph Toennes ,  Hans Joachim Schmutzler

    发明人： Marianne Sommer ,  Hans-Peter Bossmann ,  Maxim Konter ,  Peter Holmes ,  Christoph Toennes ,  Hans Joachim Schmutzler

    IPC分类号： B32B1500

    CPC分类号： C22C19/058 ,  B22F2998/00 ,  C22C1/0433 ,  C23C30/00 ,  Y10T428/12618 ,  Y10T428/12931 ,  Y10T428/12944 ,  B22F9/082

    摘要： A coating composition for superalloy structural parts, especially, for gas turbine vanes and blades, which has high resistance to oxidation and corrosion and has excellent mechanical behavior. The coating preferably comprises: 18 to 28 wt % of Co; 11 to 15 wt % of Cr; 11.5 to 14 wt % of Al; 1 to 8 wt % of Re; 1 to 2.3 wt % of Si; 0.2 to 1.5 wt % of Ta; 0.2 to 1.5 wt % of Nb; 0.3 to 1.3 wt % of Y; 0 to 1.5 wt % of Mg; 0 to 0.5 wt % of a total of La and La-series; 0 to 0.1 wt % of B; less than 0.1 wt % of Hf; and less than 0.1 wt % of C. The balance of the coating is Ni. A total of Y, La, and La-series is from 0.3 to 2.0 wt %, and a total of Si and Ta is equal to or less than 2.5 wt %.

    摘要翻译： 用于超合金结构部件的涂料组合物，特别是用于燃气轮机叶片和叶片的涂料组合物，其具有高抗氧化和腐蚀性并且具有优异的机械性能。 涂层优选包含：18至28重量％的Co; 11〜15重量％的Cr; 11.5〜14重量％的Al; 1〜8重量％的Re; 1〜2.3重量％的Si; 0.2〜1.5重量％的Ta; 0.2〜1.5重量％的Nb; 0.3〜1.3重量％的Y; 0〜1.5重量％的Mg; 0〜0.5重量％的La和La系列; 0〜0.1wt％的B; 小于0.1重量％的Hf; 和小于0.1重量％的C。涂层的余量为Ni。 Y，La和La系合计为0.3〜2.0重量％，Si和Ta的合计为2.5重量％以下。