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Method for repairing a thermal barrier coating and repaired coating formed thereby

  • US 6,413,578 B1
  • Filed: 10/12/2000
  • Issued: 07/02/2002
  • Est. Priority Date: 10/12/2000
  • Status: Expired due to Term
First Claim
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1. A method for repairing a thermal barrier coating on a component that has suffered localized spallation of the thermal barrier coating, the method comprising the steps of:

  • applying a ceramic paste on a surface area of the component exposed by the localized spallation, the ceramic paste comprising a ceramic powder in a binder, the ceramic powder comprising alumina and zirconia, the binder being chosen from the group consisting of ceramic precursor binders that thermally decompose to form a refractory material; and

    then heating the binder to yield a repair coating that covers the surface area of the component, the repair coating comprising the ceramic powder in a matrix that comprises the refractory material formed by reacting the binder.

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