Infrared Transmittance of Nanostructured Pr0.1Y1.9O3 Synthesized by a Modified Combustion Technique
Abstract
Infrared transparent ceramics found applications in infrared transparent domes and windows. Sintering of transparent ceramics without any deterioration in the transmittance and mechanical properties is a major challenge in the fabrication of transparent windows. In the present work a modified combustion synthesis was effectively utilised to synthesise nanostructured Pr0.1Y1.9O3. By conventional heating the sample was sintered to 98.2% of the theoretical density at 1550 oC for a soaking duration of two hours without the application of pressure or sintering additives. The sintered sample showed a transmittance of 66% in the mid IR region. The remarkable transmittance property of the sample can effectively be used in the fabrication of high quality infrared transparent windows.
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