تاثیر حجم فاز مایع روی توزیع نانولوله کربنی در زمینه مس–کروم در فرآیند آسیاکاری گلوله‏ای تر

نوع مقاله : علمی و پژوهشی

نویسندگان

• مریم مسرور
• سعید شیبانی
• ابوالقاسم عطائی

دانشگاه تهران

10.22067/ma.v0i29.49072

چکیده

پودر نانوکامپوزیت مس- 1% کروم- 5% نانولوله ‏کربنی در سه سطح متفاوت از شدت انرژی آسیاکاری و در دو حجم متفاوت از فاز مایع تولید گردید. تحولات ساختاری و تشکیل محلول جامد توسط طیف‏سنج پراش پرتو ایکس و تغییرات میکروساختاری توسط میکروسکوپ الکترونی روبشی بررسی شد. همچنین خواص مکانیکی نمونه‏ها با روش میکروسختی‏سنجی ارزیابی شد. میانگین اندازه کریستالیت‏ها بسته به شرایط آسیاکاری و حجم فاز مایع در محدوده‏ی 94-44 نانومتر به دست آمد. آسیاکاری تر در سطوح انرژی بالاتر و حجم فاز مایع کمتر 10 میلی‏لیتر، روشی موثر در تولید نانوکامپوزیت زمینه مس با توزیع بهینه نانولوله‏های کربنی و کمترین آسیب وارد شده به آنها است. سختی حداکثر 88 ویکرز در این شرایط بهینه به دست آمد.

کلیدواژه‌ها

• آسیاکاری تر
• نانولوله کربنی
• مس
• نانوکامپوزیت

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عنوان مقاله [English]

Pool Volume Influence on Carbon Nanotube Dispersion in Cu-Cr Matrix by Wet Ball Milling

نویسندگان [English]

• Maryam Masroor
• Saeed Sheibani
• Abolghasem Ataie

University of Tehran

چکیده [English]

In this paper, the production of Cu-1wt%Cr-5wt%CNT nano-composites by wet milling process at three different levels of milling energy and two different pool volumes was investigated. The structural evolution and solid solution formation were evaluated by X-ray diffraction technique. The microstructure was characterized by scanning electron microscopy. The mechanical properties were also investigated by microhardness testing. The mean crystallite size was in the range of 44-94 nm depending on pool volume of milling medium and milling energy. It was found that wet milling at higher levels of milling energy and lower pool volumes of 10 ml can be a beneficial method of producing the nano-composite with the least damage introduction on homogeneously dispersed carbon nanotubes. Maximum hardness of 88 HV was obtained under optimum conditions.

کلیدواژه‌ها [English]

• Wet milling
• Carbon Nanotube
• copper
• Nano-Composite

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