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专利名称：Thermal barrier coating and method of
depositing the same on combustionchamber component surfaces
发明人：David C. Giles,Roger E. Begin,David R.
Dugger,Eric W. Paskvan
申请号：US08/2229申请日：19940418公开号：US05384200A公开日：19950124
摘要：A thermal barrier coating and method of depositing the same on the surfacesof combustion chamber components in compression-ignition internal combustion enginesis disclosed. The thermal barrier coating is a dual layer having a first metallic layercomprised of MCrAlY material deposited on the component surface. A porous ceramiclayer comprised of Yttria partially stabilized zirconia or Ceria-Yttria partially stabilizedzirconia is deposited on the metallic layer to impede the flow of heat therethrough. Inoperation, the metallic layer creates a mechanical bond between the component surfaceand the ceramic layer, allows for a smooth transition between the differing physicalproperties of the component and the ceramic layer and serves as a corrosion barrier byprotecting the component from combustion gases and contaminants. There is furtherdisclosed a method of depositing the thermal barrier coating comprising the steps of (1)chemically treating the component surface to remove dirt and oil; (2) grit blasting thetreated component surface to roughen the surface and increase the available surfacearea for deposition; (3) plasma spray depositing a metallic layer comprised of MCrAlY
material on the roughened component surface to a thickness between 0.003-0.006inches; and (4) depositing a porous ceramic material comprised of 10%-15% volumeporosity Yttria partially stabilized zirconia or 10%-15% volume porosity Ceria-Yttriapartially stabilized zirconia on the metallic layer to impede the flow of heattherethrough.
申请人：DETROIT DIESEL CORPORATION
代理机构：Brooks & Kushman
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