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    Erosion and corrosion resistant coatings for exhaust gas recirculation-based gas turbines
    1.
    发明公开
    Erosion and corrosion resistant coatings for exhaust gas recirculation-based gas turbines 有权
    Erosions- undkorrosionsbeständigeBeschichtungenfürabgasrückführungsbasierteGasturbinen

    公开(公告)号：EP2677063A1

    公开(公告)日：2013-12-25

    申请号：EP13172911.3

    申请日：2013-06-19

    申请人： General Electric Company

    发明人： ANAND, Krishnamurthy ,  LAU, Yuk-Chiu ,  MATHEW, Paul ,  PABLA, Surinder Singh. ,  SUNDARARAJAN, Guruprasad ,  NAYAK, Mohandas

    IPC分类号： C23C30/00 ,  F01D5/28

    CPC分类号： C23C30/00 ,  F01D5/288 ,  F05D2230/90 ,  Y02T50/672 ,  Y10T428/12611

    摘要： A compressor blade (100) for use in a compressor section of a gas turbine engine, comprising: a martensitic stainless steel compressor blade and an abrasive coating having an anodic component. The compressor blade (100) has a blade portion (110), a dovetail portion (120) and a platform portion (130) intermediate the blade portion (110) and the dovetail portion (120), the blade portion (110) terminating in a tip (140) opposite the dovetail portion. A cobalt-based coating overlies at least the blade portion (110) of the compressor blade (100). The cobalt-based coating comprises a cobalt based material that includes precipitates of tungsten carbide that provide erosion resistance and particles of a sacrificial metal-based material distributed through the cobalt-based coating that provide galvanic corrosion resistance to the system.

    摘要翻译： 一种用于燃气涡轮发动机的压缩机部分的压缩机叶片（100），包括：马氏体不锈钢压缩机叶片和具有阳极组分的磨料涂层。 压缩机叶片（100）具有叶片部分（110），燕尾部分（120）和位于叶片部分（110）和燕尾部分（120）之间的平台部分（130），叶片部分（110）终止于 与燕尾部分相对的尖端（140）。 钴基涂层至少覆盖压缩机叶片（100）的叶片部分（110）。 钴基涂层包括钴基材料，其包括提供耐腐蚀性的碳化钨的沉淀物和分布在钴基涂层上的牺牲金属基材料的颗粒，其为系统提供电镀腐蚀性。

    CORROSION SENSOR, CORROSION MONITORING SYSTEM, AND METHOD OF QUANTIFYING CORROSION
    7.
    发明公开
    CORROSION SENSOR, CORROSION MONITORING SYSTEM, AND METHOD OF QUANTIFYING CORROSION 审中-公开
    腐蚀传感器，腐蚀监测系统和量化腐蚀的方法

    公开(公告)号：EP3246693A1

    公开(公告)日：2017-11-22

    申请号：EP17169613.1

    申请日：2017-05-05

    申请人： General Electric Company

    发明人： ANAND, Krishnamurthy ,  DIMASCIO, Paul Stephen ,  AMANCHERLA, Sundar ,  HEFNER, Rebecca E.

    IPC分类号： G01N17/04

    CPC分类号： G01N17/006 ,  G01N17/04

    摘要： A corrosion monitoring system (110) includes at least one corrosion sensor (100). The corrosion sensor (100) includes a metallic plug (104) having at least one opening, at least one ceramic sheath (106) in the opening of the metallic plug (104), and a plurality of probes (102). Each probe (102) has a central portion with a predetermined cross sectional area extending from the metallic plug (104). The ceramic sheath (106) electrically isolates each first end and each second end of the probes (102) from the metallic plug (104) and the other first ends and second ends. The probes (102) are sized to provide a range of predetermined cross sectional areas of the central portions. Such arrangement permits to extend the lifespan of the system since when one probe has been completely corroded, measurement can be switched to another probe having a higher cross sectional area and which is still operational.The corrosion monitoring system (110) also includes a resistance meter (112) measuring an ohmic resistance for at least one of the probes (102) and a computer (116) determining a corrosion rate by correlating a rate of change of the ohmic resistance to the corrosion rate of the probe (102). The corrosion monitoring system (100) is particularly suitable for real-time corrosion monitoring of components in the hot gas path of turbines.

    摘要翻译： 腐蚀监测系统（110）包括至少一个腐蚀传感器（100）。 腐蚀传感器（100）包括具有至少一个开口的金属塞（104），在金属塞（104）的开口中的至少一个陶瓷套（106）以及多个探针（102）。 每个探针（102）具有中心部分，该中心部分具有从金属插塞（104）延伸的预定横截面积。 陶瓷护套（106）将探针（102）的每个第一端和每个第二端与金属插塞（104）以及其他第一端和第二端电隔离。 探针（102）的尺寸设定为提供中央部分的一定范围的预定横截面积。 这种布置允许延长系统的使用寿命，因为当一个探头完全被腐蚀时，测量结果可以切换到具有较高横截面面积并且仍然可操作的另一个探头。腐蚀监测系统（110）还包括电阻计 （112）测量至少一个探针（102）和计算机（116）的欧姆电阻，通过使欧姆电阻的变化率与探针（102）的腐蚀速率相关来确定腐蚀速率。 腐蚀监测系统（100）特别适用于对涡轮机热气路径中的部件进行实时腐蚀监测。