氧化铝

氧化铝以其高硬度、化学稳定性和耐腐蚀性著称。广泛用于要求高温的陶瓷和耐火材料，也因其高硬度适于制造砂轮和砂纸等磨料。氧化铝还用作电子器件中的电绝缘材料和石油工艺中的催化剂载体。它的生物相容性令其适于生物医学应用，还用于制备保护涂层增强表面耐久性和耐磨性。

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氧化铝可用于制造复合材料，例如，当共价有机骨架(COF)和氧化铝结合，可得到锂硫电池的高效隔膜。