Meaning
Synthetic materials characterized by a continuous and unbroken lattice structure serve the requirements of high temperature and high pressure applications. Single crystal alumina is manufactured by slowly cooling molten aluminum oxide to prevent the formation of multiple grain boundaries. These crystals are known for high transparency and extreme hardness.
Precision machining allows the material to be used for high pressure windows and semiconductor substrates.
Material Purity
Contamination is minimized during the growth process to maintain the structural integrity of the crystal. For single crystal alumina, the absence of impurities prevents light scattering and thermal absorption. High purity sources are required to achieve a production yield that meets aerospace standards.
Structural Strength
Resistance to deformation remains high even as the temperature approaches the melting point. Because single crystal alumina lacks the weak points found between grains, it is far stronger than its polycrystalline counterparts. This capability allows it to withstand extreme mechanical stress in gas turbines.
Optical Clarity
Light passes through the material with minimal distortion across a wide spectrum. A single crystal alumina window must be polished to a high finish to avoid surface scattering. Calling a component ready for production requires an audit of the internal stress and void density.
The material provides a stable platform for high power laser applications.
