کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8026525 | 1517607 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optimization of processing conditions in plasma activated nitrogen-hydrocarbon carburizing
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Optimization of processing conditions in plasma activated nitrogen-hydrocarbon carburizing Optimization of processing conditions in plasma activated nitrogen-hydrocarbon carburizing](/preview/png/8026525.png)
چکیده انگلیسی
Problems with intergranular oxidation, energy efficiency and carbon footprint of the conventional endothermic atmosphere (CO-H2-N2) carburizing are forcing heat treating and manufacturing companies to move toward increasingly capital- and operating-cost expensive, low-pressure/vacuum carburizing methods. To offer a less-expensive alternative, a new activated carburizing method has recently been developed, bridging the endothermic atmosphere and vacuum processes, where a plasma-activated, oxygen-free, non-equilibrium nitrogen-hydrocarbons gas blend is utilized. The optimization of activated carburizing for industrial application presented here involved improvement of multi-dimensional case uniformity. As a part of this optimization, a computational fluid dynamics study was conducted for examination of gas flow field inside heat treating furnace and trays holding steel parts treated. To maximize carburizing rate and mitigate soot in non-equilibrium nitrogen-hydrocarbon atmospheres, effects of different gas mixture combinations were investigated. A mixture of N2-0.4% C3H8-1% CH4 mixture has been found to provide a well carburized case with minimized soot in the atmosphere and reduced coke deposition on the metal surface. The soot formation mechanisms for non-equilibrium carburizing atmospheres were also discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 272, 25 June 2015, Pages 190-197
Journal: Surface and Coatings Technology - Volume 272, 25 June 2015, Pages 190-197
نویسندگان
Yingying Wei, Zbigniew Zurecki, Richard D. Jr.,