کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11015816 | 1781703 | 2019 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Design, preparation and characterization of iron nitride magnetic abrasives
ترجمه فارسی عنوان
طراحی، تهیه و مشخص کردن مواد ساینده مغناطیسی آهن نیترید
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کلمات کلیدی
ترکیبات نیتروژن آهن، ساینده مغناطیسی، اصول اولیه، سختی نانوذرات،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
چکیده انگلیسی
In order to effectively polish the surface of the titanium alloy workpiece, a novel type of iron nitride magnetic abrasives was designed, prepared and characterized. Theoretically, first-principles were used to analyze the effects of phase compositions of iron nitrogen compounds on the mechanical and magnetic properties of the abrasive, and ε-Fe3N and γâ²-Fe4N were determined as the grinding phase compositions with the simultaneously improved properties of hardness, ductility and magnetism. In the experiments, the core-shell structured iron nitrogen compounds were prepared by nitriding the iron powders of about 250â¯Î¼m with ammonia at 600â¯Â°C, and the effects of nitriding time, ammonia pressure and cooling method on the product were investigated. The composition, morphology, magnetic properties and mechanical properties of the product were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), magnetometer and nanoindenter, respectively. Under experimental conditions of ammonia pressure of 0.2 Mpa, nitriding time of 3â¯h and water quenching, the abrasive was obtained with the external grinding phase of ε-Fe3N and γâ²-Fe4N in a thickness of 35.10â¯Î¼m and the internal ferromagnetic phase of α-Fe. Its magnetic saturation intensity and hardness were 148.5â¯Aâ¯m2â¯kgâ1 and 8.15â¯GPa, respectively. Grinding with this abrasive, the surface roughness of Ti-6Al-4V alloy plate was effectively reduced from 0.305â¯Î¼m to 0.077â¯Î¼m.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 774, 5 February 2019, Pages 443-450
Journal: Journal of Alloys and Compounds - Volume 774, 5 February 2019, Pages 443-450
نویسندگان
Xiaoxu Tan, Shaoyan Wang, Yan Chen, Yanwen Zhou, Zhi Li,