| AVS 54th International Symposium | |
| Thin Film | Thursday Sessions |
| Session TF1-ThA |
| Session: | Photovoltaics, Fuel Cells, and Alternative Energy Materials and Applications |
| Presenter: | H. Chen, Montana State University |
| Authors: | H. Chen, Montana State University J.A. Lucas, Montana State University W. Priyantha, Montana State University R.J. Smith, Montana State University P.E. Gannon, Montana State University M. Deibert, Montana State University V.I. Gorokhovsky, Arcomac Surface Engineering V. Shutthanandan, Pacific Northwest National laboratory P. Nachimuthu, Pacific Northwest National Laboratory |
| Correspondent: | Click to Email |
Chromia forming ferritic stainless steels are being considered for application as interconnects for planar solid oxide fuel cells (SOFC) because of their low cost and flexibility. Many SOFC designs will operate at temperatures exceeding 700°C. At these temperatures, ferritic steels lack environmental stability in the SOFC environment, and as a result may degrade the performance of the SOFC. In this study, an effective, dense and well adherent TiCrAlYO coating was deposited on 430SS using filtered arc deposition technique. XRD indicates that nanocrystalline spinel is the dominant crystal structure in the coating. Rutherford backscattering with He and non-Rutherford scattering with proton were used to characterize the composition and the thermal stability of the coatings. The chromium volatility of the coated steel plates at 800°C was measured using ion beam analysis. Significant reductions in oxidation rates as well as reduced Cr volatility were observed for the coated alloys.