We present the results of investigation of the regularities of sintering and properties of corundum ceramics based on alumina with admixtures of ultradispersed powder of Al₂O₃(Al₂O₃ UDP) synthesized by the electrochemical method. It is shown that, as the firting temperature and the concentration of Al₂O₃ UDP increases, we observe a regular elevation of the linear shrinkage, microhardness, and ultimate strength in bending of the ceramics (the maximum values attained at 1550°C are as follows: 27.8%, 17 GPa, and 340 MPa, respectively). The introduction of Al₂O₃ UDP makes it possible to get an apparent density of the ceramics equal to 3.87 g/cm³ even at 1550°C.

中文翻译：

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电化学法合成的基于Al 2 o 3的不分散Al 2 o 3粉末混合物的陶瓷性能

我们提出了基于氧化铝与电化学方法合成的Al ₂ O ₃（Al ₂ O ₃ UDP）超分散粉末混合物的刚玉陶瓷的烧结规律和性能的研究结果。结果表明，随着焙烧温度和Al ₂ O ₃ UDP浓度的增加，我们观察到陶瓷的线性收缩，显微硬度和极限弯曲强度有规律的升高（在1550°C时达到的最大值为分别为：27.8％，17 GPa和340 MPa。Al ₂ O ₃的引入UDP甚至在1550°C时也可以使陶瓷的表观密度等于3.87 g / cm ³。