کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5455333 | 1514640 | 2017 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure and mechanical properties of Y2O3-doped melt-grown Al2O3-ZrO2 eutectic ceramic
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Microstructure and mechanical properties of Y2O3-doped melt-grown Al2O3-ZrO2 eutectic ceramic Microstructure and mechanical properties of Y2O3-doped melt-grown Al2O3-ZrO2 eutectic ceramic](/preview/png/5455333.png)
چکیده انگلیسی
The microstructure and mechanical properties of the melt-grown Al2O3/ZrO2 eutectic bulks containing 0-12 mol% Y2O3 (with respect to zirconia) prepared at the low G/v ratio (thermal gradient G divided by growth rate v) were investigated. As Y2O3 content increases, except for the cellular to dendritic transition for the colony morphology, the average interphase spacing λ in the colony decreases to a minimum (â1.1 µm) at the 3 mol% Y2O3, and then increases slightly. It appears likely that with the Y2O3 content increasing the transport mechanism for dominating the crystal growth changed from heat conduction to chemical diffusion, which corresponds to the LGK (Lipton, Glicksman, and Kurz) model. The highest hardness (close to 18 GPa) was also found at the 3 mol% Y2O3. However, the fracture toughness, KIC, estimated from the indentation method decreased with the increase of Y2O3 content.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 703, 4 August 2017, Pages 372-379
Journal: Materials Science and Engineering: A - Volume 703, 4 August 2017, Pages 372-379
نویسندگان
Lian-sheng Fu, Zhen Wang, Xue-song Fu, Guo-qing Chen, Wen-long Zhou,