کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5366006 | 1388342 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improvement in the corrosion resistance of Al18B4O33w/2024Al composite by laser surface treatment
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Aluminum metal-matrix composites (MMCs) show great potential for aircraft industries. Nevertheless, the composites can be affected by different forms of corrosion such as pitting and galvanic corrosion. A pulsed YAG laser installation was used to produce surface treatment on Al18B4O33w/2024Al composite. Results indicate that laser power has significant influences on both of the microstructure and the corrosion resistance. The difference in morphological transformations was observed on the surfaces of the laser-treated specimens. An increase in Epit was obtained after laser treatment for the composite. The improvement was considered primarily due to the reduction both of reinforcement Al18B4O33 whisker and intermetallics CuAl2 on the surfaces of the laser-treated composites, which were found to be sites for pits nucleation. Moreover, the specimen with 700Â W laser treatment exhibited a much greater resistance to corrosion than the other specimens with laser treatment. This was attributed to the formation of the homogeneous and defect free microstructure in the laser-modified layer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 253, Issue 10, 15 March 2007, Pages 4524-4530
Journal: Applied Surface Science - Volume 253, Issue 10, 15 March 2007, Pages 4524-4530
نویسندگان
J. Hu, G. Liu, Z.J. Li, L.C. Kong,