Enhanced Sintering Rate of Zirconia (3Y‐TZP) Through the Effect of a Weak dc Electric Field on Grain Growth
Enhanced Sintering Rate of Zirconia (3Y‐TZP) Through the Effect of a Weak dc Electric Field on Grain Growth
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DOI：
10.1111/j.1551-2916.2010.03905.x
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发表时间：
2010-10
影响因子：
3.9
通讯作者：
Di Yang;R. Raj;H. Conrad
中科院分区：
文献类型：
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作者：
Di Yang;R. Raj;H. Conrad
我们表明，第一次，20 V/cm的直流电场的移动致密化曲线的温度较低的恒定加热速率实验与氧化钇稳定的四氧化锆粉末（3 Y-TZP）。增强的烧结速率归因于，至少部分地，在所施加的领域，与早期的实验中的超塑性变形和氧化锆多晶体中的等温晶粒生长的晶粒尺寸的影响，这样的字段下的晶粒生长的速率降低。
We show, for the first time, that a dc electric field of 20 V/cm shifts the densification curve to a lower temperature in constant heating rate experiments with yttria-stabilized tetragonal zirconia powder (3Y-TZP). The enhanced sintering rate is ascribed, at least in part, to the reduced rate of grain growth under the applied field, consistent with earlier experiments on the influence of such fields on grain size in superplastic deformation and isothermal grain growth in zirconia polycrystals.