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Ordering nanostructure and properties of Al_2O_3/ZrO_2 eutectic ceramic composites prepared by combustion synthesis under low pressure

机译:低压燃烧合成制备Al_2O_3 / ZrO_2共晶陶瓷复合材料的纳米结构和性质

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摘要

Al_2O_3/ZrO_2 eutectic ceramics were prepared by combustion synthesis using Al and Zr(NO_3)_4 as raw materials. Al_2O_3/ZrO_2 eutectic structure showed that randomly-oriented rod-like ZrO_2 phases were embedded in Al_2O_3 matrix with a spacing of about 280 nm. The bending strength and fracture toughness of the product reached 1060MPa and 11.2MPa·m~(1/2), respectively, which were attributed to nanostructure eutectic, bridge and pull-out effects of the rod-like ZrO_2.
机译:通过使用Al和Zr(NO_3)_4作为原料,通过燃烧合成来制备Al_2O_3 / ZrO_2共晶陶瓷。 Al_2O_3 / ZrO_2共晶结构表明,随机取向的棒状ZrO_2相嵌入Al_2O_3基质中,间隔约为280nm。产物的弯曲强度和断裂韧性分别达到1060MPa和11.2MPa·m〜(1/2),其归因于纳米结构的共晶,桥梁和棒状ZrO_2的拉出效应。

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