Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/92700
Title: Evolution and characterization of a Ni3Al intermetallic compound during mechanical alloying
Authors: Lu, L. 
Lai, M.O. 
Zhang, S.
Keywords: enthalpy release
mechanical alloying
Ni3Al intermetallic powders
Issue Date: 1994
Citation: Lu, L.,Lai, M.O.,Zhang, S. (1994). Evolution and characterization of a Ni3Al intermetallic compound during mechanical alloying. Materials and Design 15 (2) : 79-86. ScholarBank@NUS Repository.
Abstract: Ni3Al intermetallic powders were produced in the solid state using the mechanical alloying (ma) technique by milling Ni and Al powders in the Fritsch PM/5 planetary ball mill. The evolution and formation of the intermetallic compound were examined at different milling stages using a scanning electron microscope and X-ray diffraction, while the thermodynamic behaviour of the milled powders was studied by differential scanning calorimetry. Changes were observed in the overall composition as well as in each powder particle during the ma process. Homogeneity in composition was reached after 300 min of ma. However, after 1200 min of ma, both Ni and Al contents were found to decrease. A detailed energy-dispersive X-ray (edx) study showed that some contamination of Fe and Cr elements from the milling tools also occurred at this stage. An X-ray diffraction pattern confirmed the formation of a Ni3Al intermetallic compound after 600 min of ma. The most suitable alloying time for Ni3Al at a milling speed of 200 rpm was observed to range from 600 to 1200 min. © 1994.
Source Title: Materials and Design
URI: http://scholarbank.nus.edu.sg/handle/10635/92700
ISSN: 02613069
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

36
checked on Oct 19, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.