Thermal barrier coatings issues in advanced land-based gas turbines

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The Department of Energy`s Advanced Turbine Systems (ATS) program is aimed at fostering the development of a new generation of land-based gas turbine systems with overall efficiencies significantly beyond those of current state-of-the-art machines, as well as greatly increased times between inspection and refurbishment, improved environmental impact, and decreased cost. The proposed duty cycle of ATS machines will emphasize different criteria in the selection of materials for the critical components. In particular, thermal barrier coatings (TBCS) will be an essential feature of the hot gas path components in these machines. In fact, the goals of the ATS will require significant ... continued below

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15 p.

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Parks, W. P.; Lee, W. Y. & Wright, I. G. June 1995.

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The Department of Energy`s Advanced Turbine Systems (ATS) program is aimed at fostering the development of a new generation of land-based gas turbine systems with overall efficiencies significantly beyond those of current state-of-the-art machines, as well as greatly increased times between inspection and refurbishment, improved environmental impact, and decreased cost. The proposed duty cycle of ATS machines will emphasize different criteria in the selection of materials for the critical components. In particular, thermal barrier coatings (TBCS) will be an essential feature of the hot gas path components in these machines. In fact, the goals of the ATS will require significant improvements in TBC technology, since these turbines will be totally reliant on TBCs, which will be required to function on critical components such as the first stage vanes and blades for times considerably in excess of those experienced in current applications. Issues that assume increased importance are the mechanical and chemical stability of the ceramic layer and of the metallic bond coat; the thermal expansion characteristics and compliance of the ceramic layer; and the thermal conductivity across the thickness of the ceramic layer. Obviously, the ATS program provides a very challenging opportunity for TBCs, and involves some significant opportunities to extend this technology. A significant TBC development effort is planned in the ATS program which will address these key issues.

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15 p.

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OSTI as DE95012897

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  • Thermal barrier coating workshop, Westlake, OH (United States), 27-29 Mar 1995

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  • Other: DE95012897
  • Report No.: CONF-9503150--1
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 72949
  • Archival Resource Key: ark:/67531/metadc703319

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • June 1995

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  • Sept. 12, 2015, 6:31 a.m.

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  • Jan. 22, 2016, 7:10 p.m.

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Parks, W. P.; Lee, W. Y. & Wright, I. G. Thermal barrier coatings issues in advanced land-based gas turbines, article, June 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc703319/: accessed August 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.