کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7990435 | 1516128 | 2018 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sintering variables optimization, microstructural evolution and physical properties enhancement of nano-WC ceramics
ترجمه فارسی عنوان
بهینه سازی دگرگونی متغیرها، تکامل میکرو سازنده و افزایش خواص فیزیکی سرامیک نانوکامپوزیتی
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کلمات کلیدی
متالورژی پودر، کاربید تنگستن، پختن تراکم، سختی تکامل میکرو سازگار،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
چکیده انگلیسی
In this research, the effect of different parameters of sintering on microstructural evolution, density and hardness of WC pieces produced by nano powders was studied. Spherical nano WC powders in which 80% of the powders were below 50â¯nm diameter were pressurized in a steel mold under the pressure of 600â¯MPa. Tablets with diameter of 16â¯mm and thickness of 3â¯mm were produced out of this process. 0.8â¯wt% Zinc Stearate powders were added to the initial powders as lubricant. A tube furnace at the pressure of one atmosphere under argon protective gas was used for sintering process. Sintering were performed on 1300â¯Â°C, 1400â¯Â°C and 1500â¯Â°C for 0.5, 1 and 2â¯h. Scanning Electron Microscopy, X-Ray diffraction, density measurement and Vickers hardness techniques were used to analyze the samples. Results showed that the best sintering condition is obtainable at sintering temperature of 1400â¯Â°C and 1â¯h.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 766, 25 October 2018, Pages 672-677
Journal: Journal of Alloys and Compounds - Volume 766, 25 October 2018, Pages 672-677
نویسندگان
M. Sabzi, S.H. Mousavi Anijdan, M. Ghobeiti-Hasab, M. Fatemi-Mehr,