Transparent Aluminum (ALON)
A ceramic nearly as hard as sapphire and nearly as clear as glass, held in defense by its cost stack — and the process advances that could make it ordinary.
Aluminum oxynitride is a transparent ceramic that is nearly as hard as sapphire, nearly as clear as glass, and — because it is formed from powder rather than grown as a crystal — available in large, complex shapes. This paper examines its material science, the manufacturing cost stack that has confined it to defense applications, and the process advances that could carry it, like carbon fiber before it, from exotic to commonplace over the next fifteen years.
Nussbaum, Kevin. “Transparent Aluminum (ALON).” Z-Space Dynamics, SCI·003, May 2026. https://zspacedynamics.com/papers/alon-transparent-aluminum.html
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