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Title:
TURBINE AIRFOIL ABRADABLE COATING SYSTEM AND CORRESPONDING TURBINE BLADES
Document Type and Number:
WIPO Patent Application WO/2014/074370
Kind Code:
A3
Abstract:
A squealer tip having a coating including an abrasive is disclosed. The squealer tip may be attached to a radially outer surface of the airfoil tip and formed from at least one support material including at least one abrasive particle formed from a refractory carbide material that has a better resistance to thermal degradation compared to conventional blade tip abrasive materials as well as negligible chemical reaction with metal elements in the metal matrix used to attach the abrasive. In at least one embodiment, the abrasive particle may be tantalum carbide. The squealer tip may also extend radially outward from the tip and cover at least a portion of the radially outer surface of the tip

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Inventors:
ALLEN DAVID B (US)
Application Number:
PCT/US2013/067592
Publication Date:
July 17, 2014
Filing Date:
October 30, 2013
Export Citation:
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Assignee:
SIEMENS ENERGY INC (US)
ALLEN DAVID B (US)
International Classes:
F01D11/12
Domestic Patent References:
WO2001046084A12001-06-28
Foreign References:
EP0484115A11992-05-06
US4854196A1989-08-08
Attorney, Agent or Firm:
SWANSON, Erik, C. et al. (170 Wood Avenue SouthIselin, New Jersey, US)
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