Influence of Cooling Hole Design on In-Service Coating Degradation FREE

[+] Author Affiliations
Thomas J. Carr

Westinghouse Electric Corporation, Orlando, FL

John Dworak

Dow Chemical Company, Freeport, TX

Paper No. 97-GT-423, pp. V004T12A016; 10 pages
  • ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award
  • Orlando, Florida, USA, June 2–5, 1997
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7871-2
  • Copyright © 1997 by ASME


In service degradation of MCrAlY coated camberline cooled blades resulted after 16,000 hours of operation. The peripheral cooling design was developed to reduce the operating metal temperature, thereby extending the coating life and extending the refurbishment cycle. To evaluate the effectiveness of this design, camberline and peripheral cooled blades were coated with MCrAlY type coating for evaluation. The blades were installed in a 501D5 combustion turbine for rainbow testing in 1991. In this paper, the metallurgical evaluation results of the coated peripheral style blades exposed to 24,000 hours of operation is presented.

Copyright © 1997 by ASME
This article is only available in the PDF format.



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In