کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7718432 1497482 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reduction of oxide scale on hot-rolled steel by hydrogen at low temperature
ترجمه فارسی عنوان
کاهش مقیاس اکسید بر روی فولاد نورد گرم توسط هیدروژن در دمای پایین
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
This study was carried out with an intention to remove the oxide scale on hot-rolled steel by gaseous reduction instead of traditional acid pickling method with an aim to reduce the pollution. The reduction of iron oxide scale by hydrogen-argon mixture was studied by thermogravimetric tests in the temperature range of 370-550 °C. The rate controlling process was discussed according to the Avrami-Erofe'ev equation generalized method. The analysis suggests that the reduction of scale is controlled by two- and/or three-dimensional growth of nuclei in the whole temperature range investigated. The apparent activation energy exhibit a sudden decrease from 78.8 to 31.8 kJ/mol at temperature higher than 410 °C. Morphological structure of the reduced scale was investigated by scanning electron microscope.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 27, 12 September 2014, Pages 15116-15124
نویسندگان
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