Abnormal Grain Growth Mechanism in Alumina

机译：氧化铝晶粒生长异常的机理

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During the sintering process, the onset of abnormal grain growth is depend on various factors. The abnormal grain growth behavior, however, was focused only the growth stage compared to nucleation stage. Because most of abnormal grain growth occurred to a rapid mode, the observation of abnormal grain growth was impossible. In this study, we intend to in-situ observe the nucleation stage of abnormal grain using porous alumina. As a result, the liquid phase due to unintended impurities plays a main role for the formation of abnormal nuclei by the rearrangement of small grains due to the capillary force.

机译：在烧结过程中，异常晶粒长大的开始取决于各种因素。然而，与成核阶段相比，异常的晶粒生长行为仅集中在生长阶段。因为大多数异常晶粒生长是快速发生的，所以不可能观察到异常晶粒生长。在这项研究中，我们打算使用多孔氧化铝原位观察异常晶粒的成核阶段。结果，由于毛细作用力引起的小晶粒的重排，由不希望有的杂质引起的液相在异常核的形成中起主要作用。

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来源
《International Symposium on Eco-Materials Processing amp; Design; 20060108-11; Chengdu(CN)》|2006年|P.474-477|共4页
会议地点 Chengdu(CN)
作者
Hee-Gon Bang; Jun-Ho Song; Sang-Yeup Park;
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作者单位

Department of Ceramics Engineering, Kangnung National University Kangnung, Kangwondo, 210-702, Rep. of Korea;

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会议组织
原文格式 PDF
正文语种 eng
中图分类工程材料一般性问题;
关键词
alumina; abnormal grain growth; nuclei; impurity;

机译：氧化铝;晶粒异常生长;核;杂质;

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Abnormal Grain Growth Mechanism in Alumina

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