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    杨权, 赵忠民, 张龙, 潘传增, 宋亚林, 刘明军. ZrO2含量对超重力下燃烧合成快速凝固Al2O3/ZrO2(4Y)复合陶瓷的影响[J]. 机械工程材料, 2009, 33(8): 40-45.
    引用本文: 杨权, 赵忠民, 张龙, 潘传增, 宋亚林, 刘明军. ZrO2含量对超重力下燃烧合成快速凝固Al2O3/ZrO2(4Y)复合陶瓷的影响[J]. 机械工程材料, 2009, 33(8): 40-45.
    shu
    YANG Quan, ZHAO Zhong-min, ZHANG Long, PAN Chuan-zeng, SONG Ya-lin, LIU Ming-jun. Effect of ZrO2 Content on Rapidly Solidified Composite Ceramic Al2O3/ZrO2(4Y) Prepared by Combustion Synthesis under High Gravity[J]. Materials and Mechanical Engineering, 2009, 33(8): 40-45.
    Citation: YANG Quan, ZHAO Zhong-min, ZHANG Long, PAN Chuan-zeng, SONG Ya-lin, LIU Ming-jun. Effect of ZrO2 Content on Rapidly Solidified Composite Ceramic Al2O3/ZrO2(4Y) Prepared by Combustion Synthesis under High Gravity[J]. Materials and Mechanical Engineering, 2009, 33(8): 40-45.
    shu

    ZrO2含量对超重力下燃烧合成快速凝固Al2O3/ZrO2(4Y)复合陶瓷的影响

    Effect of ZrO2 Content on Rapidly Solidified Composite Ceramic Al2O3/ZrO2(4Y) Prepared by Combustion Synthesis under High Gravity

      摘要
    • 摘要: 采用超重力下燃烧合成技术,以快速凝固方式制备了Al2O3/ZrO2(4Y)复合陶瓷,用XRD、SEM与EDS等研究了ZrO2含量对复合陶瓷显微结构和性能的影响.结果表明:当复合陶瓷中ZrO2质量分数在34.1%～46.4%时,复合陶瓷的显微结构主要为棒晶;当质量分数为49.6%～53.7%时,其显微结构主要为形状不规则的ZrO2球晶;随着ZrO2含量的增加,复合陶瓷的相对密度逐渐降低(最高可达94.3%),而硬度和断裂韧度均呈先增高后降低的趋势,当ZrO2质量分数为42.6%时,硬度和断裂韧度均达到最高值,分别为13.1 GPa和13.5 MPa·m1/2.

       

      Abstract: Based on combustion synthesis technology under high gravity to prepare rapidly solidified composite ceramic Al2O3/ZrO2 (4Y),the influence of ZrO2 content on microstructure and properties of solidified composite ceramics Al2O3/ZrO2 (4Y) was investigated through XRD,SEM and EDS.The results show that the main microstructure of the ceramic was rod-shaped eutectic colonies as the ZrO2 content was in the range of 34.1%-46.4%,and the microstructure transformed to be isolated spherically-shaped ZrO2 grains as the ZrO2 content was in the range of 49.6%-53.7%.With the ZrO2 content increasing,the relative density of the ceramic decreased,the maximum value was 94.3%,whereas the hardness and the fracture toughness increased first and then decreased.The maximum hardness value of the composite ceramic reached 13.1 GPa as the ZrO2 content was 426%,and the maximum fracture toughness value of 13.5 MPa·m1/2 was also obtained.

       

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