公开(公告)号：US20050035086A1

公开(公告)日：2005-02-17

申请号：US10638581

申请日：2003-08-11

Applicant: Keng Chen ,  Shih-Tung Ngiam

Inventor： Keng Chen ,  Shih-Tung Ngiam

IPC: F01D25/00 ,  C23C4/00 ,  C23C4/02 ,  C23C28/00 ,  C23G1/02 ,  C23G1/14 ,  C23G1/28 ,  C25D5/34 ,  F01D5/28 ,  F02C7/00 ,  C23F1/00

CPC classification number: F01D5/288 ,  C23C4/00 ,  C23C4/02 ,  C23C28/021 ,  C23G1/02 ,  C23G1/14 ,  C23G1/28 ,  C25D5/34 ,  F05D2230/30 ,  F05D2230/80 ,  F05D2230/90 ,  F05D2300/143 ,  F05D2300/611 ,  Y02T50/672

Abstract: A method of upgrading an aluminide coating on a used turbine engine component to a platinum aluminide coating. The method involves cleaning at least one surface of the component to remove hot corrosion products from the surface without damaging the aluminide coating. In one embodiment, the cleaning step involves immersing the component in a heated solution comprising acetic acid while agitating the solution using ultrasonic energy. A layer of platinum is then deposited onto the cleaned surface of the component. A second aluminide coating is then formed on the surface of the component to upgrade the component. The invention also relates to a turbine engine component, e.g., a turbine blade, having a metal-based substrate and a platinum aluminide coating on at least one surface thereof, which coating has been upgraded from an aluminide coating originally on the component using the above method.

Abstract translation: 将二氧化碳涡轮发动机部件上的铝化物涂层升级为铂铝化物涂层的方法。 该方法包括清洁组件的至少一个表面以从表面去除热腐蚀产物而不损坏铝化物涂层。 在一个实施方案中，清洁步骤包括将组分浸入包含乙酸的加热溶液中，同时使用超声波能量搅拌该溶液。 然后将铂层沉积在组件的清洁表面上。 然后在组件的表面上形成第二铝化物涂层以升级组件。 本发明还涉及一种涡轮发动机部件，例如涡轮叶片，其在其至少一个表面上具有基于金属的基底和铝化铂涂层，该涂层已使用上述方法从原始在组件上的铝化物涂层升级 方法。

公开(公告)号：US06355116B1

公开(公告)日：2002-03-12

申请号：US09534512

申请日：2000-03-24

Applicant: Keng Nam Chen ,  Shih Tung Ngiam

Inventor： Keng Nam Chen ,  Shih Tung Ngiam

IPC: C23C804

CPC classification number: C23F1/44 ,  Y10T156/1116

Abstract: A method for controlled removal of a portion of a diffusion coating from the outer surface of a nickel-containing superalloy article. A diffusion coating typically includes a diffusion layer between an outer aluminide layer and the nickel-containing substrate. The method includes contacting the coated superalloy article in a preselected chemical stripping solution for a preselected period of time sufficient to remove only the outer aluminide layer, without substantially affecting the diffusion layer underlying the outer aluminide layer. After neutralizing the stripping solution, the article can be inspected and repaired as needed. The aluminide outer layer can then be restored in a conventional manner.

Abstract translation: 从含镍超级合金制品的外表面控制一部分扩散涂层的方法。 扩散涂层通常包括在外铝化物层和含镍衬底之间的扩散层。 该方法包括使涂覆的超合金制品在预选的化学剥离溶液中接触预选的时间段，足以仅去除外铝化物层，而基本上不影响外铝化物层下面的扩散层。 在中和剥离溶液后，可以根据需要对产品进行检查和维修。 然后可以以常规方式恢复铝化物外层。