کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11020103 | 1717611 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study of the scale formed on super 304H boiler tube steels after long-term steam oxidation at high temperatures
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Steam oxidation of a Super 304H boiler tube was performed at steam temperatures of 650â¯Â°C and 700â¯Â°C for time durations up to 5000â¯h. The oxidation scale outcomes which formed on as-received untreated and shot-peened (SP) tubes were studied using X-ray diffraction (XRD), scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM). γ-Grain nanocrystallization on the surface of the SP specimen generated an abundant fraction of grain boundary that guaranteed the formation of a continuous amorphous SiO2 layer at the metal-scale interface that enhanced the formation of dense Cr2O3 and FeCr2O4 in the scale. Scale breakaway along defects in the outer layer of the scale was accelerated by the steam temperature in the untreated specimens, whereas the scale that formed on the SP specimens appeared to be stable.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 146, December 2018, Pages 71-80
Journal: Materials Characterization - Volume 146, December 2018, Pages 71-80
نویسندگان
Keun-Bong Yoo, Yinsheng He, Han-Sang Lee, Si-Yeon Bae, Doo-Soo Kim, Keesam Shin,