OXYGEN TRANSPORT CERAMIC MEMBRANES

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The mechanical properties of model systems were analyzed. A reasonably accurate finite element model was implemented and a rational metric to predict the strength of ceramic/metal concentrical joints was developed. The mode of failure of the ceramic/metal joints was determined and the importance of the mechanical properties of the braze material was assessed. Thermal cycling experiments were performed on the model systems and the results were discussed. Additionally, experiments using the concept of placing diffusion barriers on the ceramic surface to limit the extent of the reaction with the braze were performed. It was also observed that the nature and ... continued below

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Bandopadhyay, Dr. Sukumar & Nagabhushana, Dr. Nagendfra July 1, 2001.

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Description

The mechanical properties of model systems were analyzed. A reasonably accurate finite element model was implemented and a rational metric to predict the strength of ceramic/metal concentrical joints was developed. The mode of failure of the ceramic/metal joints was determined and the importance of the mechanical properties of the braze material was assessed. Thermal cycling experiments were performed on the model systems and the results were discussed. Additionally, experiments using the concept of placing diffusion barriers on the ceramic surface to limit the extent of the reaction with the braze were performed. It was also observed that the nature and morphology of the reaction zone depends greatly on the nature of the perovskite structure being used. From the experiments, it is observed that the presence of Cr in the Fe-occupied sites decreases the tendency of Fe to segregate and to precipitate out of the lattice. In these new experiments, Ni was observed to play a major role in the decomposition of the ceramic substrate.

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OSTI as DE00807454

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  • Other Information: PBD: 1 Jul 2001

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  • Report No.: FC26-99FT40054--05
  • Grant Number: FC26-99FT40054
  • DOI: 10.2172/807454 | External Link
  • Office of Scientific & Technical Information Report Number: 807454
  • Archival Resource Key: ark:/67531/metadc737835

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  • July 1, 2001

Added to The UNT Digital Library

  • Oct. 18, 2015, 6:40 p.m.

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  • March 23, 2016, 11:06 a.m.

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Bandopadhyay, Dr. Sukumar & Nagabhushana, Dr. Nagendfra. OXYGEN TRANSPORT CERAMIC MEMBRANES, report, July 1, 2001; Pittsburgh, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc737835/: accessed December 11, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.