Highly transparent spinel windows by microwave sintering

Jasbinder S. Sanghera; Ben Rock; Guillermo Villalobos; Woohong Kim; Michael Hunt; Bryan Sadowski; Shyam Bayya; Ishwar Aggarwal; M. Ashraf Imam

doi:10.1117/12.2180287

22 May 2015 Highly transparent spinel windows by microwave sintering

Jasbinder S. Sanghera, Ben Rock, Guillermo Villalobos, Woohong Kim, Michael Hunt, Bryan Sadowski, Shyam Bayya, Ishwar Aggarwal, M. Ashraf Imam

Author Affiliations +

Proceedings Volume 9453, Window and Dome Technologies and Materials XIV; 945302 (2015) https://doi.org/10.1117/12.2180287
Event: SPIE Defense + Security, 2015, Baltimore, MD, United States

Abstract

Spinel ceramic exhibits excellent optical and mechanical properties, but its widespread use in high volume applications has been limited primarily due to the high cost associated with hot pressing and finishing. While, we have previously demonstrated techniques to reduce finishing costs, in this paper we report on the use of microwave sintering to make spinel ceramic at significantly lower cost than traditional hot pressing. We also identify preferred grain growth as well as an intra-granular fracture mode.

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Jasbinder S. Sanghera, Ben Rock, Guillermo Villalobos, Woohong Kim, Michael Hunt, Bryan Sadowski, Shyam Bayya, Ishwar Aggarwal, and M. Ashraf Imam "Highly transparent spinel windows by microwave sintering", Proc. SPIE 9453, Window and Dome Technologies and Materials XIV, 945302 (22 May 2015); https://doi.org/10.1117/12.2180287

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