کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8029298 | 1517643 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Tribological properties of adaptive NiCrAlY-Ag-Mo coatings prepared by atmospheric plasma spraying
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Adaptive NiCrAlY-Ag-Mo composite coating was deposited by atmospheric plasma spraying and its tribological properties from 20 °C to 800 °C under unlubricated conditions were evaluated using CSM high temperature tribometer. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman spectroscopy were used to characterize the coating and the corresponding wear tracks to determine the lubrication mechanisms. The results showed that NiCrAlY-Ag-Mo composite coating exhibited low friction coefficients around 0.3 in the entire temperature range and its wear rates were at the order of 10â 5 mm3/N m at all test temperatures. Characterization of NiCrAlY-Ag-Mo coating revealed that silver provided lubrication at temperatures below 400 °C. Silver molybdate and molybdenum oxide, which were formed as the temperature raised, act as lubricants at higher temperature (above 400 °C). Meanwhile, the formation mechanism of silver molybdate and molybdenum oxide was also briefly discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 235, 25 November 2013, Pages 521-528
Journal: Surface and Coatings Technology - Volume 235, 25 November 2013, Pages 521-528
نویسندگان
Jie Chen, Yulong An, Jie Yang, Xiaoqin Zhao, Fengyuan Yan, Huidi Zhou, Jianmin Chen,