کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7993772 | 1516154 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Nb content on the microstructure and corrosion resistance of the sputtered Cr-Nb-N coatings
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of Nb content on the microstructure and corrosion resistance of the sputtered Cr-Nb-N coatings Effect of Nb content on the microstructure and corrosion resistance of the sputtered Cr-Nb-N coatings](/preview/png/7993772.png)
چکیده انگلیسی
Thin Cr-Nb-N films with Nb content ranging from 5.1 to 19.5Â at.% were prepared onto the AISI 440C substrates by reactive magnetron sputtering of the Cr and Nb in Ar-N2 gas mixture. The effects of the Nb content on the microstructure and the corrosion behavior in 3.5Â wt% NaCl solution were investigated. All the deposited films showed a typical surface feature of granular structure. The Cr-Nb-N films with 5.1Â at.% and 10.9Â at.% Nb showed a duplex layers consisting of a dense and coherent layer near film-substrate interface, followed by a columnar layer differed from the uniform columnar structure for pure CrN. While for Cr-Nb-N films with higher Nb content, there was no obvious dense layer but a columnar structure. The low Nb content Cr-Nb-N coated samples showed a positive shift of both corrosion potential and the pitting potential compared to the pure CrN coated sample while the pitting potential decreased for high Nb content Cr-Nb-N coated samples. The Cr-Nb-N film with Nb content of 10.9Â at.% possesses the best corrosion resistance due to the high polarization resistance resulted from the modification of the microstructure by the Nb incorporation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 740, 5 April 2018, Pages 510-518
Journal: Journal of Alloys and Compounds - Volume 740, 5 April 2018, Pages 510-518
نویسندگان
Desheng Wang, Yanlong Fu, Ming Hu, Dong Jiang, Xiaoming Gao, Qinqin Wang, Jun Yang, Jiayi Sun, Lijun Weng,