【摘要】 研究了掺杂Fe,Ti离子对水热条件下合成α-Al₂O₃晶体的颜色和晶体形态的影响,制备出了蓝色宝石晶体,发现在介质中掺入Fe₂O₃和TiCl₃时,水热反应生成棕黄色α-Al₂O₃晶体。当在介质中加入FeSO₄·7H₂O时,水热反应生成黑色α-Al₂O₃晶体。只有同时加入FeSO₄·7H₂O和TiCl₃时,才能生成蓝色宝石。蓝色宝石的晶体形态和同时生成的α-Al₂O₃晶体基本相同。测量了蓝宝石晶体的透射光谱。更多还原

【Abstract】 The color and shape of α-Al2O3 crystals synthesized with hydrothermal reaction were investigated and the sapphire crystals were obtained using the proposed method under lower temperature (430℃ ) and lower pressure (40 MPa). The hexagonal prism crystal was synthesized using hydrothermal reaction without adulteration of other ions. The black crystals in the shape of hexagonal prism were obtained when FeSO4·7H2O was added into the reaction medium, while the sapphire crystals were obtained with the addition of both FeSO4·7H2O and TiCl3 into the reaction medium. The complex crystal faces were observed in sapphire crystals, which is different from the α-Al2O3 crystal synthesized with the above methods. The transmission spectra of the sapphires were measured.更多还原