公开(公告)号：US20050058547A1

公开(公告)日：2005-03-17

申请号：US10455649

申请日：2003-06-05

申请人： Robert Bruce ,  Nripendra Das ,  Thomas Mantkowski

发明人： Robert Bruce ,  Nripendra Das ,  Thomas Mantkowski

IPC分类号： F01D5/28 ,  B63H1/26

CPC分类号： F01D5/288 ,  F05D2230/90 ,  F05D2300/611 ,  Y02T50/67

摘要： A bond coat process for thermal barrier coatings. The method includes, after cleaning and masking the external surface of the substrate, first applying a layer of NiCrZr alloy to the external surface of the substrate using a sputter coat or other suitable process. Aluminum is then applied to the substrate, using either a vapor phase aluminization (VPA) or chemical vapor deposition (CVD) process, wherein aluminum diffuses into the NiCrZr alloy layer wherein a diffusion layer is formed by the aluminum with the substrate material on the internal surface of the substrate. The coated substrate may then be subjected to a heat treatment in a protective atmosphere to further allow diffusion of the aluminide into the NiAlCrZr diffusion layer. The substantially Al outer layers of the NiAlCrZr diffusion layer, and the diffusion aluminide layer, will provide an aluminum source for the surface, which will oxidize to form a tightly adherent aluminum scale. The diffusion aluminide layer and the high Al portion of the NiAlCrZr diffusion layer will also function as a source of aluminum which will provide a reservoir to heal the alumina scale during operation.

摘要翻译： 用于热障涂层的粘结涂层工艺。 该方法包括在清洁和掩蔽衬底的外表面之后，首先使用溅射涂层或其它合适的工艺将NiCrZr合金层施加到衬底的外表面上。 然后使用气相镀铝（VPA）或化学气相沉积（CVD）工艺将铝施加到衬底，其中铝扩散到NiCrZr合金层中，其中扩散层由铝形成，衬底材料在内部 基板的表面。 然后可以将涂覆的基底在保护气氛中进行热处理，以进一步允许铝化物扩散到NiAlCrZr扩散层中。 NiAlCrZr扩散层的基本Al外层和扩散铝化物层将为表面提供铝源，其将氧化以形成紧密粘附的铝垢。 NiAlCrZr扩散层的扩散铝化物层和高Al部分也将作为铝源，其将在操作期间提供用于愈合氧化铝垢的储存器。