Effect of Mechanical Activation on Ti-50Ni Powder Blends Reactivity

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

In the present study, equiatomic powder blends of Ni and Ti were mechanically activated for a short period of time in a planetary ball mill using different levels of energy input. The characterization of the mechanically activated materials was achieved by scanning electron microscopy, X-ray diffraction, differential thermal analysis and chemical analysis (oxygen and nitrogen measurements). During mechanical activation no phase transformation was induced and the high temperature reaction between Ni and Ti elemental powders was shifted to lower temperatures. Moreover, the temperature and the intensity of the exothermic reaction, i.e. the reactivity observed in the powder blends, decreased with the increase in the level of milling energy input. A maximum oxygen content of 0.39 wt% was measured after mechanical activation.
Original languageUnknown
Title of host publicationADVANCED MATERIALS FORUM V, PT 1 AND 2. Book Series: Materials Science Forum
Pages544-549
Volume636-637
DOIs
Publication statusPublished - 1 Jan 2010
Event5th International Materials Symposium/14th Conference of the Sociedade Portuguesa de Materiais - Lisbon, Portugal
Duration: 5 Apr 20098 Apr 2009

Conference

Conference5th International Materials Symposium/14th Conference of the Sociedade Portuguesa de Materiais
CountryPortugal
CityLisbon
Period5/04/098/04/09

Cite this