Paper Title:
Nanostructured Materials Prepared by Mechanical Alloying and Mechanochemical Process
  Abstract

Mechanical alloying and mechanochemical treatment are the major powder processing techniques on the nano scale. In these processes a high energy ball mill has been applied to synthesize compounds and nanocomposites such as aluminum metal matrix nanocomposite, hydroxyapatite and bionanocomposites based on hydroxyapatite. These processes involve deformation, cold welding, fracturing, and rewelding of powder particles. Due to the applied mechanical forces, chemical reactions and phase transformations could also take place. In the present research work, the effects of milling time, milling media, and sonication process on the microstructures and morphology of the obtained materials were evaluated by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Transmission Electron Microscopy (TEM). The results indicate that increasing the milling time leads to an increased lattice strain and decreased crystallite sizes. Furthermore, the results show that the sonication process leads to the morphological improvement of nanocrystalline hydroxyapatite. The obtained data show that the nanocrystalline hydroxyapatite with low contamination and suitable morphology can be produced in Polyamide6 vials similar to stainless steel vials, therefore it seems that using polymeric and polymeric based nanocomposite vials with high strength and wear resistance could lead to a new way for the mass production of nanocrystalline hydroxyapatite with high performance, low contamination and low cost.

  Info
Periodical
Defect and Diffusion Forum (Volumes 283-286)
Edited by
Andreas Öchsner, Graeme E. Murch and Ali Shokuhfar
Pages
90-97
DOI
10.4028/www.scientific.net/DDF.283-286.90
Citation
A. Shokuhfar, B. Nasiri-Tabrizi, "Nanostructured Materials Prepared by Mechanical Alloying and Mechanochemical Process", Defect and Diffusion Forum, Vols. 283-286, pp. 90-97, 2009
Online since
March 2009
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Ali Shokuhfar, Bahman Nasiri-Tabrizi, Omid Gashti, Reza Ebrahimi-Kahrizsangi
Abstract:Mechanochemical process in polymeric vials has been carried out successfully to produce nanocrystalline hydroxyapatite (HAp) through two...
98
Authors: Taha Rostamzadeh, H. Shahverdi, R. Sarraf-Mamoory, A. Shanaghi
Abstract:Mechanical alloying is one of the most successful methods for the manufacturing of metal matrix nanocomposite powders. In this study, Al/SiC...
764
Authors: H. Kaffash, Ali Shokuhfar, Hamid Reza Rezaie, Ehsan Mostaed, Ali Mostaed
Abstract:Fabrication of alloys in the solid state via mechanical alloying (MA) process has been studied by earlier researchers. The effects of milling...
1262
Authors: H. Ramezanalizadeh, Saeed Heshmati-Manesh
Abstract:Molybdenum disiliside is known as a ceramic material with attractive properties for high temperature structural applications. In this study,...
1364
Authors: Amir Reza Shirani-Bidabadi, Ali Shokuhfar, Mohammad Hossein Enayati, Mazda Biglari
Abstract:In this research, the formation mechanisms of a (NiCr)Al-Al2O3 nanocomposite were investigated. The structural changes of powder particles...
21