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    • 2. 发明授权
    • Application of corrosion protective coating for extending the lifetime of water cooled stator bar clips
    • 应用防腐涂层,延长水冷定子线棒的使用寿命
    • US06969932B2
    • 2005-11-29
    • US10622142
    • 2003-07-18
    • Young Jin KimPaul Joseph MartinianoReed Roeder CordermanScott Andrew WeaverAlan Michael IversenJames Rollins Maughan
    • Young Jin KimPaul Joseph MartinianoReed Roeder CordermanScott Andrew WeaverAlan Michael IversenJames Rollins Maughan
    • H02K3/24H02K9/00H02K15/00H02K9/19
    • H02K9/005H02K3/24H02K3/44H02K15/0025H02K15/0093Y10T29/49009
    • A water-cooled stator bar clip for electrical generators and a method for applying a corrosion-resistant protective coating, preferably Sc, Ti, Cr, Zr, Nb, Mo, Hf, Ta, W, Ni, and Al, and their alloys or oxides to existing stator bar end fittings in order to significantly reduce the possibility of leaks through the brazed connections of the copper stator bar end connections. The coatings can be applied locally using various known physical vapor deposition (“PVD”), chemical vapor deposition (“CVD”) or other direct coating techniques known in the art. For example, the coatings can be applied using ion plasma deposition, sputtering or wire arc techniques (all PVD processes) or by using electroplating, high velocity oxygen free (“HVOF”) deposition, DC arc or electroless plating. Preferably, the coatings are applied either to new stator bar clips or to existing clips in the field using a known pencil coater technique. After being deposited, the metallic coatings form a protective oxide layers over the existing copper brazed joint after being exposed to a water environment, thereby protecting the chemical and structural integrity of the underlying copper brazed joint.
    • 一种用于发电机的水冷式定子棒夹,以及用于施加耐腐蚀保护涂层,优选Sc,Ti,Cr,Zr,Nb,Mo,Hf,Ta,W,Ni和Al及其合金或 氧化物到现有的定子棒端部配件,以便显着地减少通过铜定子棒端部连接的钎焊连接的泄漏的可能性。 涂层可以使用各种已知的物理气相沉积(“PVD”),化学气相沉积(“CVD”)或本领域已知的其它直接涂覆技术进行局部施加。 例如,可以使用离子等离子体沉积,溅射或线弧技术(所有PVD工艺)或通过使用电镀,高速无氧(“HVOF”)沉积,直流电弧或无电镀来施加涂层。 优选地,使用已知的铅笔涂布机技术将涂层施加到新的定子棒夹或现场的现有夹子。 在沉积后,金属涂层在暴露于水环境之后,在现有的铜钎焊接头上形成保护性氧化物层,从而保护下面的铜钎焊接头的化学和结构完整性。