In Situ fabrication of (Cu-Cr)-Al2O3 nanocomposite

Subject Areas : journal of New Materials

حمید رضا عزت پور ¹ , محسن حداد سبزوار ² , جلیل وحدتی خاکی ³ , حسن حمیدی ⁴

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

Received: 2015-12-30 Accepted : 2015-12-30 Published : 2010-09-23

Keywords: Nanocomposite, (Cu-Cr)-Al2O3, mechanochemical,

Abstract :

   (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

References:

55. Fogagnolo, M. Ruiz-Navas, H. Robert and M. Torralba. 2003, “The effects of mechanical alloying on the compressibility of aluminium matrix composite powder^”, Materials Science and Engineering A, Vol355, 50-55.


56. D. Cullity. 1984, ^“Element of X-Ray Diffraction, second edition^”, Department of Metallurgical Engineering and Materials Science University of Notre Dame.


57. Suryanarayana. 2001, ^“Mechanical alloying and milling^”, Progress in Materials Science, Vol46, 1-184.


58. Das, P. P. Chatterjee, I. Manna and S. K. Pabi, 1999, ^“A Measure of Enhanced Diffusion Kinetics in Mechanical Alloying of Cu-18 at. % Al by Planetary Ball Milling^”, Scripta Mate, Vol41, 861-866.

D.Y. Ying and D.L. Zhang , ^“Processing of Cu–Al₂O₃ metal matrix nanocomposite materials by using high energy ball milling”. 2000, Materials Science and Engineering A, 152-156.

D.Y. Ying and  D.L. Zhang. 2003, ^“Solid state reactions between CuO and Cu(Al) or Cu₉Al₄ in mechanically milled composite powders^”, Materials Science and Engineering A361, 321–330.

Gschneidner, Jr. and L. Eyring. ^“Handbook on the Physics and Chemistry of Rare Earths^”. 1997, edited by K.A., Elsevier Science B. g All rights reserved, Vol. 24.

177. S. Motta, P. K. Jena, E. A. Brocchi and I. G. Solrzano. 2001,“Characterization of Cu–Al2O3 nano-scale composites synthesized by in situ reduction”, Materials Science and Engineering C, Volume 15, Issues 1-2, 175-177.


178. K. Jena, E. A. Brocchi and M. S. Motta. 2001, ^“In-situ formation of Cu–Al₂O₃ nano-scale composites by chemical routes and studies on their microstructures^”, Materials Science and Engineering A313, 180–186.

S.J. Hwang and J. Lee. 2005, ^“Mechanochemical synthesis of Cu–Al₂O₃ nanocomposites”, Materials Science and Engineering A, Vol405, 140–146.

146. Takacs. 2005, ^“Self-sustaining reactions induced by ball milling^”, Progress in Materials Science, Vol405, 140-146.


147. J. Liu, I. Ohnuma, R. Kainuma and K. Ishida, 1998, ^“ Phase equilibrium in the Cu-rich portion of the Cu–Al binary system, Journal of Alloys and Compounds^”, Vol264, 201 –208.


148. Shengqi, Q. Xiaoyan, M. Mingliang, Zhou Jingen, Z. Xiulin and W. Xiaotian, ^“Solid-state reaction of Al/CuO couple by high-energy ball milling^”. 1998, Journal of Alloys and Compounds, Volume 268, 211-214.


149. Ying and D.L. Zhang. 2000, ^“Solid-state reactions between Cu and Al during mechanical alloying and heat treatment^”, Journal of Alloys and Compounds, Vol311, 275 –282.

Zhang DL and  Richmond JJ. J, ^“Analysis of Compressing and Shearing Behavior of Powders in High-Speed Elliptical-Rotor-Type Powder Mixer (HEM)^”. 1999, ‘Mater Sci,  Vol33. 34-701.