کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9796517 | 1514948 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nanoindentation of lithium niobate: hardness anisotropy and pop-in phenomenon
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Lithium niobate is a non-centrosymmetric crystal. Due to its non-centrosymmetric nature, the properties such as hardness and fracture toughness are likely to be different on opposite faces of the same wafer. In many wafer production processes such as wiresawing, lapping, and polishing, opposite faces of the wafer are processed simultaneously. Thus, it is important to understand the nature of anisotropy on the opposite faces of the same wafer. As a first step, hardness anisotropy of three common orientations of lithium niobate wafers is studied using nanoindentation technique. The hardness values on opposite faces for the same direction are found to be different for most cases. Lithium niobate exhibits a significant indentation size effect. Lithium niobate also exhibits pop-in phenomenon similar to the pop-in behavior of other materials. The pop-in phenomenon in lithium niobate is dictated by crystallographic orientation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 393, Issues 1â2, 25 February 2005, Pages 327-331
Journal: Materials Science and Engineering: A - Volume 393, Issues 1â2, 25 February 2005, Pages 327-331
نویسندگان
Sumeet Bhagavat, Imin Kao,