کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7889805 | 1509867 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure, microhardness and thermal expansion of CNT/Al composites prepared by flake powder metallurgy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Microstructure, microhardness and thermal expansion of CNT/Al composites prepared by flake powder metallurgy Microstructure, microhardness and thermal expansion of CNT/Al composites prepared by flake powder metallurgy](/preview/png/7889805.png)
چکیده انگلیسی
Carbon nanotube/aluminum (CNT/Al) composites are prepared by a combination of flake powder metallurgy and hot-isostatic-pressing. The specimens are investigated by several techniques including Raman spectroscopy, optical microscopy, scanning- and transmission electron microscopy. The composites show a layered-microstructure with a stacking of CNT/Al flakes with a CNT-rich layer between two flakes. The individual Al grains forming the flakes are about 500â¯nm in size. The CNTs are well dispersed within a flake and they bridge the micro-cracks. The results reveal that the coefficient of thermal expansion (CTE) decreases markedly upon the increase in carbon content, reaching 15.4â¯Ãâ¯10â6â¯Kâ1 for the specimen with a carbon content of 2.0â¯wt% (2.9â¯vol%), i.e. a 30% decrease compared to the CTE of pure Al. This could arise from the layered-microstructure resulting from the utilization of Al flakes as opposed to rounded particles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part A: Applied Science and Manufacturing - Volume 105, February 2018, Pages 126-137
Journal: Composites Part A: Applied Science and Manufacturing - Volume 105, February 2018, Pages 126-137
نویسندگان
Pham Van Trinh, Nguyen Van Luan, Doan Dinh Phuong, Phan Ngoc Minh, Alicia Weibel, David Mesguich, Christophe Laurent,