Partially Stabilized ZrO[sub]2[/sub] As A Possible Ir Dome Material

R. W. Rice; J. R. Spann; W. J. McDonough; R. P. Ingel; D. Lewis

doi:10.1117/12.964642

26 December 1984 Partially Stabilized ZrO₂ As A Possible Ir Dome Material

R. W. Rice, J. R. Spann, W. J. McDonough, R. P. Ingel, D. Lewis

Proceedings Volume 0505, Advances in Optical Materials; (1984) https://doi.org/10.1117/12.964642
Event: 28th Annual Technical Symposium, 1984, San Diego, United States

Abstract

There is increasing interest in IR window materials with transmissionn limits of > 5 μm, increased mechanical toughness, and higher temperature capability. ZrO₂, which transmits to 7-8 μm is a possible candidate material for such needs. While its IR cut-off is at somewhat shorter wavelengths than other candidates (e.g. Y₂0₃ with a cut-off of - 9 μm), ZrO₂ offers the potential of significant toughening via a two phase, i.e. partially stabilized, structure. Such structures, and the relevant toughening mechanisms are reviewed, and the resultant mechanical properties discussed, particularly for the Zr0₂-Y20₃ system. For example, some materials in this system can give strengths of about 1.5 GPa (200,000 psi) at 22°C and nearly 0.7 GPa (100,000 psi) at 1500°C for laboratory test specimens. Preliminary optical measurements, including some outlining optical scattering effects of the second (precipitate) phase, required for mechanical toughening are presented. These suggest that useful transmission in the range of interest is achievable with these toughened ZrO₂ materials.

Citation Download Citation

R. W. Rice, J. R. Spann, W. J. McDonough, R. P. Ingel, and D. Lewis "Partially Stabilized ZrO₂ As A Possible Ir Dome Material", Proc. SPIE 0505, Advances in Optical Materials, (26 December 1984); https://doi.org/10.1117/12.964642

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