کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5455582 | 1514639 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A bulk of uniform nanocrystalline copper with superior comprehensive mechanical properties electroformed in an ultra-low sulfate concentration bath without additives
ترجمه فارسی عنوان
بخش عمده ای از مس نانومواد بلورین با ویژگی های مکانیکی عالی فوق العاده در حمام غلیظ سولفات فوق کم بدون افزودنی
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کلمات کلیدی
نانوکریستال، الکترو قالب بندی، ریز ساختار، ویژگی های مکانیکی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
Nanocrystalline copper has a high potential to meet high application requirement of a variety of new industries for its unique mechanical, physical and chemical properties. But its disappointingly low ductility limits its application. This paper provides a reliable and economical preparation method of nanocrystalline copper with superior comprehensive mechanical properties. In an ultra-low sulfate concentration bath (20Â g/L) without additives, by strong electrolyte flushing and regulating cathodic working current density from 1 to 6Â A/dm2, copper deposits with different nanostructure is electroformed because of high electrochemical polarization. The microstructure and mechanical properties of copper deposits are investigated. Except of the deposits of 6Â A/dm2, the copper deposits exhibit good comprehensive mechanical properties in tensile tests at room temperature. In particular, a bulk of nanocrystalline copper obtained at 4Â A/dm2, with uniform grains size (60-70Â nm) and random grain orientation, exhibits superior comprehensive mechanical properties, with a high tensile strength of 526Â MPa and a high elongation of 30%. The deformation mechanisms of copper deposits are discussed. Fracture observation indicates a feature of ductile fracture.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 704, 17 September 2017, Pages 238-245
Journal: Materials Science and Engineering: A - Volume 704, 17 September 2017, Pages 238-245
نویسندگان
C.J. Shen, Z.W. Zhu, D. Zhu,