工业蓝宝石的简单理解
Key Takeaways Industrial sapphire is corundum (Al2O3) — natural or synthetic — that does not reach decorative gem grade and is instead used for its hardness, temperature resistance and insulation. It serves two main purposes: substrate materials such as LED semiconductor substrates, and window materials for watch dials, aerospace and precision manufacturing. Its value comes from corundum's property set: high temperature and corrosion resistance, 高强度, 莫氏硬度 9 硬度, 耐磨性, electrical insulation and hermeticity. The processing chain runs seed crystal, growth, 取向, boule,...
