Whiskers of TiN by topochemical reaction

It has been found that sodium titanate powder can be converted to TiN powder by treatment with gaseous ammonia at 1000°C. This observation has led to a test of the effect of ammonia on potassium titanate filaments. The result was a product which consisted of TiN filaments with essentially the same m...

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Bibliographic Details
Published in:Journal of crystal growth 1991-05, Vol.112 (1), p.47-54
Main Authors: Bamberger, C.E., Allard, L.F., Coffey, D.W., Bennett, M.R.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Physics
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Whiskers and dendrites (growth, structure, and nonelectronic properties)
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Summary:It has been found that sodium titanate powder can be converted to TiN powder by treatment with gaseous ammonia at 1000°C. This observation has led to a test of the effect of ammonia on potassium titanate filaments. The result was a product which consisted of TiN filaments with essentially the same morphology as the starting titanate material. Examination of the filamentous material before and after the reaction (which we designated “topochemical”) by scanning electron microscopy (SEM) and analytical transmission electron microscopy (TEM) confirmed that even single crystal filaments (whiskers) of K 2Ti 6O 13 were topochemically converted to TiN whiskers.
ISSN:0022-0248
1873-5002
DOI:10.1016/0022-0248(91)90911-N