公开(公告)号：US20030037437A1

公开(公告)日：2003-02-27

申请号：US10272820

申请日：2002-10-17

Applicant: General Electric

Inventor： Nripendra Nath Das ,  Raymond William Heidorn ,  Walter Michael Gmerek JR. ,  David Andrew Jablonka

IPC: B23P006/00

CPC classification number: B23P6/005 ,  C23C10/04 ,  F01D5/288 ,  F05D2230/40 ,  F05D2300/121 ,  F05D2300/132 ,  F05D2300/2118 ,  Y02T50/67 ,  Y02T50/672 ,  Y10T29/37 ,  Y10T29/49316 ,  Y10T29/49318 ,  Y10T29/49336 ,  Y10T29/49339 ,  Y10T29/49732 ,  Y10T29/49742 ,  Y10T29/53096

Abstract: A method for applying diffusion aluminide coating on a selective area of a turbine engine component and the coating produced by that method is disclosed. A quartz infrared lamp heats only substantially the localized area of the component to be coated, rather than the complete part. Either halide activated or non-activated tape is applied on the area to be coated and is held in place during coating using a high temperature dimensionally stable tape holder manufactured from graphite or ceramic. The quartz infrared lamp is used to heat only the desired area to a coating temperature of about 1800null F. to about 2000null F. under an inert atmosphere for about 3 to about 8 hours to achieve the desired aluminide coating thickness. No powder masking of the machined surface area is required. Due to the localized heating, aluminum vapor generated from the tape will only deposit aluminide coating on the taped area.

Abstract translation: 公开了一种在涡轮发动机部件的选择区域上涂覆扩散铝化物涂层的方法和通过该方法制备的涂层。 石英红外灯仅基本上加热要涂覆的部件的局部区域，而不是整个部件。 将卤化物活化或非活化胶带施加在待涂覆的区域上，并使用由石墨或陶瓷制成的高温尺寸稳定的胶带支架在涂布过程中保持就位。 石英红外灯用于在惰性气氛下仅将所需区域加热至约1800°F至约2000°F的涂层温度约3至约8小时，以获得所需的铝化物涂层厚度。 不需要加工表面积的粉末掩蔽。 由于局部加热，从胶带产生的铝蒸汽只会将铝化物涂层沉积在胶带区域上。