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Nitriding reactions of Ti-Al system induced by ball milling in ammonia gas

journal contribution
posted on 20.10.1994, 00:00 authored by Ying (Ian) ChenYing (Ian) Chen, A Calka, J S Williams, B W Ninham
TiN, AlN and Ti₂ AlN were synthesized by ball milling elemental TiAl powders in an ammonia atmosphere. The progress of the milling process was monitored by measurement of the vial pressure changes during milling. The vial pressure variations revealed that ammonia was absorbed on the particle surfaces during the first stage of milling and further decomposed into nitrogen and hydrogen. The average nitrogen content of the as-milled powders was determined using Rutherford backscattering spectrometry. The structural development and nitride formation were characterized by X-ray diffractometry. The incidence of the milling conditions, mixture composition and ammonia quantity on the reaction product is discussed.

History

Journal

Materials Science and Engineering: A

Volume

187

Issue

1

Pagination

51 - 55

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0921-5093

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

1994, Elsevier Sequoia