Skip to main content Accessibility help
×
Home

Interfaces in Oxides Formed on NiAlCr Doped with Y, Hf, Ti, and B

  • Torben Boll (a1), Kinga A. Unocic (a2), Bruce A. Pint (a2) and Krystyna Stiller (a1)

Abstract

This study applies atom probe tomography (APT) to analyze the oxide scales formed on model NiAlCr alloys doped with Hf, Y, Ti, and B. Due to its ability to measure small amounts of alloying elements in the oxide matrix and its ability to quantify segregation, the technique offers a possibility for detailed studies of the dopant’s fate during high-temperature oxidation. Three model NiAlCr alloys with different additions of Hf, Y, Ti, and B were prepared and oxidized in O2 at 1,100°C for 100 h. All specimens showed an outer region consisting of different spinel oxides with relatively small grains and the protective Al2O3-oxide layer below. APT analyses focused mainly on this protective oxide layer. In all the investigated samples segregation of both Hf and Y to the oxide grain boundaries was observed and quantified. Neither B nor Ti were observed in the alumina grains or at the analyzed interfaces. The processes of formation of oxide scales and segregation of the alloying elements are discussed. The experimental challenges of the oxide analyses by APT are also addressed.

  • View HTML
    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Interfaces in Oxides Formed on NiAlCr Doped with Y, Hf, Ti, and B
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Interfaces in Oxides Formed on NiAlCr Doped with Y, Hf, Ti, and B
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Interfaces in Oxides Formed on NiAlCr Doped with Y, Hf, Ti, and B
      Available formats
      ×

Copyright

Corresponding author

* Corresponding authors. torben.boll@kit.edu; stiller@chalmers.se

References

Hide All
Boll, T., Al-Kassab, T., Yuan, Y. & Liu, Z.G. (2007). Investigation of the site occupation of atoms in pure and doped TiAl/Ti3Al intermetallic. Ultramicroscopy 107, 796801.
Boll, T., Zhu, Z., Al-Kassab, T. & Schwingenschlögl, U. (2012). Atom probe tomography simulations and density functional theory calculations of bonding energies in Cu3Au. Microsc Microanal 18, 964970.
Chen, Y., Reed, R.C. & Marquis, E.A. (2012). As-coated thermal barrier coating: structure and chemistry. Scr Mater 67, 779782.
Chen, Y., Reed, R.C. & Marquis, E.A. (2014). Interfacial solute segregation in the thermally grown oxide of thermal barrier coating structures. Oxid Met 82, 457467.
Dong, Y., Motta, A.T. & Marquis, E.A. (2013). Atom probe tomography study of alloying element distributions in Zr alloys and their oxides. J Nucl Mater 442, 270281.
Geiser, B.P., Kelly, T.F., Larson, D.J., Schneir, J. & Roberts, J.P. (2007). Spatial distribution maps for atom probe tomography. Microsc Microanal 13, 437447.
Goward, G.W. (1998). Progress in coatings for gas turbine airfoils. Surf Coat Technol 108–109, 7379.
Haynes, J.A., Pint, B.A., More, K.L., Zhang, Y. & Wright, I.G. (2002). Influence of sulfur, platinum, and hafnium on the oxidation behavior of CVD NiAl bond coatings. Oxid Met 58, 513544.
Hono, K., Ohkubo, T., Chen, Y.M., Kodzuka, M., Oh-ishi, K., Sepehri-Amin, H., Lia, F., Kinno, T., Tomiya, S. & Kanitani, Y. (2011). Broadening the applications of the atom probe technique by ultraviolet femtosecond laser. Ultramicroscopy 111, 576583.
Karahka, M. & Kreuzer, H.J. (2013). Field evaporation of oxides: A theoretical study. Ultramicroscopy 132, 5459.
Kofstad, P. (1966). High Temperature Oxidation of Metals. 1966, 340 P. New York, NY: John Wiley & Sons Inc.
Larson, D.J., Alvis, R.L., Lawrence, D.F., Prosa, T.J., Ulfig, R.M., Reinhard, D.A., Clifton, P.H., Gerstl, S.S.A., Bunton, J.H., Lenz, D.R., Kelly, T.F. & Stiller, K. (2008). Analysis of bulk dielectrics with atom probe tomography. Microsc Microanal 14, 12541255.
Larson, D.J., Prosa, T.J., Ulfig, R.M., Geiser, B.P. & Kelly, T.F. (2013). Local electrode atom probe tomography. Amsterdam, Netherlands: Elsevier.
Lozano-Perez, S., Yamada, T., Terachi, T., Schröder, M., English, C.A., Smith, G.D.W., Grovenor, C.R.M. & Eyre, B.L. (2009). Multi-scale characterization of stress corrosion cracking of cold-worked stainless steels and the influence of Cr content. Acta Mater 57, 53615381.
Marquis, E.A., Yahya, N.A., Larson, D.J., Miller, M.K. & Todd, R.I. (2010). Probing the improbable: Imaging C atoms in alumina. Mater Today 13, 3436.
Naumenko, D., Pint, B.A. & Quadakkers, W.J. (2016). Current thoughts on reactive element effects in alumina-forming systems: In memory of John Stringer. Oxid Met 86, 143.
Pint, B.A. (1996). Experimental observations in support of the dynamic-segregation theory to explain the reactive-element effect. Oxid Met 45, 137.
Stiller, K., Thuvander, M., Povstugar, I., Choi, P.P. & Andrén, H.-O. (2016). Atom probe tomography of interfaces in ceramic films and oxide scales. MRS Bull 41, 3539.
Stiller, K., Viskari, L., Sundell, G., Liu, F., Thuvander, M., Andrén, H.-O., Larson, D.J., Prosa, T. & Reinhard, D. (2012). Atom probe tomography of oxide scales. Oxid Met 79, 227238.
Unocic, K.A., Leonard, D.N. & Pint, B.A. (2014). Effect of boron on the oxidation behavior of NiCrAlYHfTi in H2O and CO2 environments. Surf Coat Technol 260, 1722.
Unocic, K.A. & Pint, B.A. (2013). Oxidation behavior of co-doped NiCrAl alloys in dry and wet air. Surf Coat Technol 237, 815.
Viskari, L., Hörnqvist, M., Moore, K.L., Cao, Y. & Stiller, K. (2013). Intergranular crack tip oxidation in a Ni-base superalloy. Acta Mater 61, 36303639.
Young, D.J. (2016). High Temperature Oxidation and Corrosion of Metals, 2nd ed. Amsterdam, Netherlands: Elsevier.

Keywords

Metrics

Altmetric attention score

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed