کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5458307 | 1516165 | 2017 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study on properties of double-layered Ni-P-Cr composite coating prepared by the combination of electroless plating and pack cementation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The method of pack cementation was applied to prepare a chromized layer on the surface of an electroless Ni-P coating to further improve its mechanical property and corrosion resistance, and then the microstructure, chemical composition, and performance of the achieved coatings were investigated. The results indicated that the double-layered Ni-P-Cr composite coating was composed of an inner Ni-P layer and an outer Cr-Ni-P layer. Meanwhile, the thickness of the composite coating become larger and more Cr was found as chromizing time increased. By comparison, the double-layered coating with the chromizing time of 9Â h showed a higher hardness than electroless Ni-P coatings and double-layered coatings with a shorter chromizing time. In addition, all the double-layered coatings generally displayed higher corrosion resistance than electroless coatings. Also, increasing chromizing time was beneficial to reduce the defects of the double-layered coatings ascribed to the dense oxide film, and thus improved corrosion resistance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 729, 30 December 2017, Pages 787-795
Journal: Journal of Alloys and Compounds - Volume 729, 30 December 2017, Pages 787-795
نویسندگان
Qin-Ying Wang, Yu-Chen Xi, Jiao Xu, Shuang Liu, Yuan-Hua Lin, Yun-Hong Zhao, Shu-Lin Bai,