Hostname: page-component-76fb5796d-22dnz Total loading time: 0 Render date: 2024-04-27T03:24:54.665Z Has data issue: false hasContentIssue false
  • English
  • Français

Oxygen diffusivities in mullite/zirconia composites measured by 18O/16O isotope exchange and secondary ion mass spectrometry

Published online by Cambridge University Press:  31 January 2011

Hong-Da Ko  and
Chien-Cheng Lin
Hong-Da Ko
Affiliation:
Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 30050, Taiwan
Chien-Cheng Lin*
Affiliation:
Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 30050, Taiwan
*
a) Address all correspondence to this author. e-mail: chienlin@cc.nctu.edu.tw
Get access

Abstract

Oxygen diffusivities in mullite/zirconia composites were measured by 18O/16O isotope exchange and secondary ion mass spectrometry. They exhibited a wide range of values from 10−21 to 10−10 m2/s at temperatures between 1000 and 1350 °C in the composites with 0 to 80 vol% zirconia. At a fixed temperature, oxygen diffusivities in high-zirconia composites were larger by at least eight orders of magnitude than those in low-zirconia composites. The percolation threshold occurred between 30 and 40 vol% zirconia, where oxygen diffusivities dramatically changed. There was a clear tendency of the activation energies of oxygen diffusion in composites to decrease with increasing zirconia contents. The large oxygen diffusivities in the high-zirconia composites were attributed to the interconnected channels of zirconia from the microstructural aspect.

Keywords

DiffusionSecondary ion mass spectroscopy (SIMS)Composite
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 2 , February 2008 , pp. 353 - 358
Copyright
Copyright © Materials Research Society 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Osendi, M.I., Bender, B.A., Lewis, D. III: Microstructure and mechanical properties of mullite–silicon carbide composites. J. Am. Ceram. Soc. 72, 1049 1989CrossRefGoogle Scholar
2Ruh, R., Mazdiyasni, K.S.Mendiratta, M.G.: Mechanical and microstructural characterization of mullite and mullite–SiC– whisker and ZrO2-toughened-mullite–SiC-whisker composites. J. Am. Ceram. Soc. 71, 503 1988Google Scholar
3Claussen, N.Jahn, J.: Mechanical properties of sintered, in situ-reacted mullite–zirconia composites. J. Am. Ceram. Soc. 63, 228 1980CrossRefGoogle Scholar
4Becher, P.F., Hsueh, C.H., Angelini, P.Tiegs, T.N.: Toughening behavior in whisker-reinforced ceramic matrix composites. J. Am. Ceram. Soc. 71, 1050 1988CrossRefGoogle Scholar
5Tsai, C.Y., Lin, C.C., Zangvil, A.Li, A.K.: Effect of zirconia content on the oxidation behavior of silicon carbide/zirconia/mullite composites. J. Am. Ceram. Soc. 81, 2413 1998CrossRefGoogle Scholar
6Lin, C.C., Zangvil, A.Ruh, R.: Microscopic mechanisms of oxidation in SiC–whisker-reinforced mullite/ZrO2 matrix composites. J. Am. Ceram. Soc. 82, 2833 1999Google Scholar
7Lin, C.C., Zangvil, A.Ruh, R.: Phase evolution in silicon carbide-whisker-reinforced mullite/zirconia composite during long-term oxidation at 1000 °C to 1350 °C. J. Am. Ceram. Soc. 83, 1797 2000Google Scholar
8Mogilevsky, P.Zangvil, A.: Modeling of oxidation behavior of SiC-reinforced ceramic matrix composites. Mater. Sci. Eng., A 262, 16 1999CrossRefGoogle Scholar
9Tsai, C.Y.Lin, C.C.: Dependence of oxidation modes on zirconia content in silicon carbide/zirconia/mullite composites. J. Am. Ceram. Soc. 81, 3150 1998CrossRefGoogle Scholar
10Lin, C.C., Zangvil, A.Ruh, R.: Modes of oxidation in SiC-reinforced mullite/ZrO2 composites: Oxidation vs depth behavior. Acta Mater. 47, 1977 1999CrossRefGoogle Scholar
11Fielitz, P., Borchardt, G., Schmucker, M., Schneider, H., Wiedenbeck, M., Rhede, D., Weber, S.Scherrer, S.: Secondary ion mass spectroscopy study of oxygen-18 tracer diffusion in 2/1-mullite single crystals. J. Am. Ceram. Soc. 84, 2845 2001Google Scholar
12Ikuma, Y., Shimada, E., Sakano, S., Oishi, M., Yokoyama, M.Nakagawa, Z.: Oxygen self-diffusion in cylindrical single-crystal mullite. J. Electrochem. Soc. 146, 4672 1999CrossRefGoogle Scholar
13Kim, B.K., Park, S.J.Hamaguchi, H.: Raman spectrometric determination of the oxygen self-diffusion coefficients in oxide. J. Am. Ceram. Soc. 77, 2648 1994Google Scholar
14Crank, J.: The Mathematics of Diffusion, 2nd ed.(Oxford University Press) New York 1975Google Scholar
15Fielitz, P., Borchardt, G., Schmucker, M.Schneider, H.: How to measure volume diffusivities and grain boundary diffusivities of oxygen in polycrystalline oxides. Solid State Ionics 160, 75 2003Google Scholar
16Kirkpatrick, S.: Percolation and conduction. Rev. Mod. Phys. 45, 574 1973Google Scholar
17Shante, V.K.S.Kirkpatrick, S.: An introduction to percolation theory. Adv. Phys. 20, 325 1971CrossRefGoogle Scholar
18Landauer, R.: Electrical conductivity in inhomogeneous media in American Institute of Physics Conference Proceedings, No. 40, Electrical Transport and Optical Properties of Inhomogeneous Media, edited by J.C. Garland and D.B. Tanner American Institute of Physics New York 1978 2Google Scholar
19Kusy, R.P.: Influence of particle size ratio on the continuity of aggregates. J. Appl. Phys. 48, 5301 1977Google Scholar
20Carmona, F., Canet, R.Delhaes, P.: Piezoresistivity of heterogeneous solids. J. Appl. Phys. 61, 2550 1987Google Scholar
21Williams, E.L.: Diffusion of oxygen in fused silica. J. Am. Ceram. Soc. 48, 190 1965Google Scholar
22Fielitz, P.Borchardt, G.: On the accurate measurement of oxygen self-diffusivities and surface exchange coefficients in oxides via SIMS depth profiling. Solid State Ionics 144, 71 2001Google Scholar