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MgO对Al_2O_3透明陶瓷显微结构和透光性能的影响

China Ceramics(2013)

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Abstract
采用高纯α-Al2O3为原料,用真空烧结工艺制备透明Al2O3陶瓷。研究了添加剂MgO、保温时间等对Al2O3透明陶瓷的相对密度、显微结构和光学性能的影响。实验结果表明,掺杂MgO含量为0.05 wt%时能够抑制晶粒的生长,改善烧结性能,但添加量过多会使残余气孔增多,降低陶瓷的致密度。随着保温时间的延长,陶瓷致密度提高,气孔排出较完全,光学性能较好。
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Key words
Al2O3transparent ceramics,MgO,Relative density,Microstructure
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