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CN101479398B 保护部件不热腐蚀的方法以及通过所述方法保护的部件 失效 - 权利终止

  • Patent Title: 保护部件不热腐蚀的方法以及通过所述方法保护的部件
  • Patent Title (English): Method for protecting components against hot corrosion and the protective components
  • Application No.: CN200780023791.8
    Application Date: 2007-05-31
  • Publication No.: CN101479398B
    Publication Date: 2011-11-16
  • Inventor: P·M·沃克 , M·怀特赫斯特
  • Applicant: 西门子公司
  • Applicant Address: 德国慕尼黑
  • Assignee: 西门子公司
  • Current Assignee: 西门子公司
  • Current Assignee Address: 德国慕尼黑
  • Agency: 中国专利代理(香港)有限公司
  • Agent 温大鹏
  • Priority: 0612576.9 2006.06.24 GB
  • International Application: PCT/EP2007/055296 2007.05.31
  • International Announcement: WO2007/147708 EN 2007.12.27
  • Date entered country: 2008-12-24
  • Main IPC: C23C10/04
  • IPC: C23C10/04 ;  C23C10/60 ;  C23C10/56 ;  C23C28/00
保护部件不热腐蚀的方法以及通过所述方法保护的部件
Abstract:
一种保护特别是涡轮叶片的部件不受到热腐蚀影响的方法，包括如下步骤：(1)将铬扩散覆层施加在部件上；以及(2)将陶瓷材料的覆层施加在铬扩散覆层的一个或多个所选区域上，所述一个或多个所选区域是在部件的随后使用过程中受到低于第一预定温度的温度的区域。陶瓷材料最好包括与金属氧化物结合的结合材料。在优选实施例中，涡轮叶片在整个内表面和外表面上被覆铬扩散覆层。接着经由掩模将铝扩散覆层施加在翼面表面以及叶片的内表面上。掩模被去除，并且陶瓷材料作为覆盖层在平台和叶片根部之间的区域内施加在铬扩散覆层上。
Abstract(English):

A method of protecting a component, in particular a turbine blade, from the effects of hot corrosion includes the steps of (1) applying a chromium diffusion coating to the component and (2) applying a coating of a ceramic material to one or more selected regions of the chromium diffusion coating. The ceramic material preferably includes a binder combined with a metal oxide e.g. aluminium, chromium or titanium. In a preferred embodiment, a turbine blade is coated over the whole of its internal and external surfaces with the chromium diffusion coating. In an intermediate step an aluminium diffusion coating is then applied, through a mask, to the aerofoil surfaces and the internal surfaces of the blade. The mask is removed and the ceramic material is applied as an overlay to the chromium diffusion coating in a region between the platform and the root of the blade.

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