کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1610196 1516273 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kinetics of the nitridation of dysprosium during mechanochemical processing
ترجمه فارسی عنوان
سینتیک نیتروژن دیسپروزیم در طی پردازش مکانیکمی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
Dysprosium nitride was synthesized by the reactive milling of the rare earth metal under 400 kPa nitrogen gas in a planetary ball mill. The nitrogen consumption rate was calculated from in situ temperature and pressure measurements to find the reaction extent as a function of milling time at milling speeds from 350 to 650 rpm. The results are analyzed in terms of a fundamental milling dynamics model in which the input milling energy is the primary driving force for reaction and the rate limiting step of the nitridation kinetics is the formation of chemically active surfaces. The model differs from traditional gas-solid reactions which are often limited by diffusion of a species through a surface layer or by dissociation of the gas molecule. These results give fresh insight into reactive gas-solid milling kinetics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 620, 25 January 2015, Pages 413-420
نویسندگان
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