نویسندگان
1 دانشجوی دکترا مهندسی متالورژی و مواد دانشگاه فردوسی مشهد
2 دانشیار مهندسی متالورژی و مواد دانشگاه فردوسی مشهد
3 استاد مهندسی متالورژی و مواد دانشگاه فردوسی مشهد
4 دانشجوی کارشناسی ارشدمهندسی متالورژی و مواد دانشگاه فردوسی مشهد
چکیده
کلیدواژهها
عنوان مقاله [English]
(Cu-Cr)-Al2O3 nanocomposite with different contents of Al2O3 has been successfully produced by using mechanochemical routs. This approach involves mechanical milling of Cu, Al, CuO and Cr2O3 in a high energy ball mill to produce (Cu-Cr)-Al2O3 composite. Different amount of initial Cu contents has been used to control the adiabatic temperature, Al2O3 particles size and Al2O3 content in the final products. The results of micro structure analysis with scanning electron microscopy (SEM) and X-ray diffraction (XRD) studies showed that in the early stage of ball milling particles agglomeration occurred and subsequently a solid solution of Cr in Cu, Cu (Cr), formed. In next step reaction between solute Al and CuO resulted in formation of fine Al2O3 particles and fracture of particles caused particles refinement. The results of X-ray diffraction showed that Al2O3 particles were very fine
کلیدواژهها [English]
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