Behavior of Cu-Cr Powder Mixtures During Mechanical Alloying (TECHNICAL NOTE)
محل انتشار: ماهنامه بین المللی مهندسی، دوره: 23، شماره: 1
سال انتشار: 1389
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 137
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شناسه ملی سند علمی:
JR_IJE-23-1_005
تاریخ نمایه سازی: 18 بهمن 1400
چکیده مقاله:
In the present work, the behavior of Cu-Cr powder mixtures during mechanical alloying has been studied. The powder mixtures with ۱, ۳ and ۶ weight percents of Cr in Cu were treated. They were milled in a ball mill with two different speeds of ۲۵۰ and ۵۰۰ rpm using equal numbers of ۱ and ۲ centimeters balls. The weight ratio of balls to powders was ۱۰ to ۱ under argon atmosphere. Ethanol was used as the process control agent and milling times were ۴, ۱۲, ۴۸ and ۹۶ hours. After every hour of milling, a half–an–hour stop was applied to avoid temperature rise. The milled powder mixture was evaluated by a scanning electron microscope equipped with energy dispersive spectroscopy and an optical microscope equipped with image analyzer. Results have shown profound effects of milling conditions (the change in time, speed, etc.) on the behavior of milled powders.
کلیدواژه ها:
نویسندگان
gholam hossein akbari
Materials Engineering, Shahid Bahonar University of Kerman
Majid Taghian
Materials Engineering, Isfahan University of Technology