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

被引：0
|
作者：
Chen, Y. [1 ]
Calka, A. [1 ]
Williams, J.S. [1 ]
机构：
[1] Australian Natl Univ, Canberra
来源：
Materials Science and Engineering A | 1994年 / A187卷 / 01期
关键词：
Absorption - Ammonia - Ball milling - Composition - Decomposition - Nitriding - Powder metals - Pressure measurement - Spectrometry - Surfaces - Synthesis (chemical) - X ray analysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
TiN, AlN and Ti2AlN were synthesized by ball milling elemental Ti-Al 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.
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页码：51 / 55
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