大连理工大学主页平台管理系统付雪松减摩剂及其协同效应对树脂基摩擦材料性能影响中文主页

论文成果

Microstructure refinement approaches of melt-grown Al2O3/YAG/ZrO2 eutectic bulk: 点击次数：; 发布时间： 2019-03-09; 发布时间：2019-03-09; 论文类型：期刊论文; 发表时间：2013-09-01; 发表刊物：CERAMICS INTERNATIONAL; 收录刊物：Scopus、EI、SCIE; 卷号：39; 期号：7; 页面范围：7445-7452; ISSN号：0272-8842; 关键字：Eutectic ceramic; Melt superheating treatment; Microstructure evolution; Melt undercooling; Microstructure refinement; 摘要：Microstructure developments of melt-grown Al2O3/YAG/ZrO2 ceramic bulks were investigated by controlling composition, cooling rate, heterogeneous nucleation sites and melt superheating treatment. The solidification microstructure of sample with hypereutectic composition (ZrO2 20 mol%) is finer than that with hypoeutectdc or eutectic ones. With increasing the cooling rate, microstructure of melt-grown samples develops from colony to dendrite and finally to cell. The microscopy and the components of samples vary with the melt superheating temperature and the type of heterogeneous nucleation sites. The microstructure evolutions of melt-grown Al2O3/YAG/ZrO2 eutectic relate to the melt undercooling level and the solid-liquid interfaces stability. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

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副教授博士生导师硕士生导师

性别：男

毕业院校：大连理工大学

学位：博士

所在单位：材料科学与工程学院

学科：材料加工工程

办公地点：大连理工大学铸造中工程心

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