کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5349651 | 1503644 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Changes in the structure and tribological property of Ag film by LEO space environment exposure
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Changes in the structure and tribological property of Ag film by LEO space environment exposure Changes in the structure and tribological property of Ag film by LEO space environment exposure](/preview/png/5349651.png)
چکیده انگلیسی
Ag films, deposited by arc ion plating, had been exposed for 43.5Â h in real low earth orbit (LEO) space environment by a space environment exposure device (SEED) aboard the China Shenzhou-7 manned spaceship. The structure, morphology, composition and tribological property of the Ag films after the space environment exposure (SEE) were investigated using X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), X-ray photoelectron spectroscope (XPS) and ball-on-disk tribometer, respectively. Depth XPS and XRD analysis revealed that after the SEE, the surface layer of Ag films was partially oxidized to Ag2O, the cracking and flaking phenomena could be observed from the film surface by FESEM, and so the Ag films lose its metallic shine and became gray. As a result, the tribological performance was deteriorated and the high/unstable friction was obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 320, 30 November 2014, Pages 466-470
Journal: Applied Surface Science - Volume 320, 30 November 2014, Pages 466-470
نویسندگان
Xiaoming Gao, Ming Hu, Jiayi Sun, Yanlong Fu, Jun Yang, Lijun Weng, Weimin Liu,