Fabrication and Consolidation of TiNx by Pulsed Electric Current Sintering

Article Preview

Abstract:

A new and simple method is proposed to fabricate fully dense and single fcc phase of substoichiometric titanium nitride (TiNx). Powders mixture composed of titanium hydride (TiH2) and titanium nitride (TiN) was consolidated by using pulsed electric current sintering. All samples showed relative density values higher than 98% with larger grain size at lower nitrogen concentration. Lattice parameter increased linearly with increasing [N]/[Ti] ratio. In addition, TiNx with substoichiometric compositions was more easily densified than stoichiometric TiN. The addition of TiH2 improves the sinterability of the samples preserving the fcc phase characteristic of TiN.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

55-58

Citation:

Online since:

July 2013

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] H. A. Wriedt and J.L. Murray, "The N-Ti(Nitrogen-Titanium) System" Bull. of Alloy Phase Diagr., 8 (4) (1987) 378-388.

DOI: 10.1007/bf02869274

Google Scholar

[2] K. Uematsu, M. Nakamura, Z. Kato, N. Uchida and K. Saito, "Hot Isostatic Pressing and Thermoelectrical Properties of Non-Stoichiometric Titanium Nitride" J. Ceram. Soc. Jpn. 97 (1) (1989) 63-67.

DOI: 10.2109/jcersj.97.63

Google Scholar

[3] W. Lengauer, "Properties of bulks δ-TiN1-x prepared by nitrogen diffusion into titanium metal" J. of Alloys and Compd., 186 (1992) 293-307..

DOI: 10.1016/0925-8388(92)90016-3

Google Scholar

[4] Y. G. Tkachenko, S. S. Ordan`yan, D. Z. Yurchenko, V. K. Yulyugin and D. V. Chupov, "Preparation and some properties of titanium nitride in the homogeneity region" Izv. Akad. Nauk SSSR, Neorg. Mater., 19 (8) (1983) 1333-1336.

Google Scholar

[5] N. Glandut, S. Valette and M. Brossard, "Electrooxidation of substoichiometric titanium nitrides, TiN1-x, 0<x<5" Electrochem. Comm. 23 (2012) 63-67.

DOI: 10.1016/j.elecom.2012.06.032

Google Scholar

[6] T. Graziani and A. Bellosi, "Densification and characteristics of TiN ceramics" J. of Mater. Sci. Lett., 14 (1995) 1078-1081.

DOI: 10.1007/bf00258170

Google Scholar

[7] H. Kuwahara, N. Mazaki, M. Takahashi, T. Watanabe, X. Yang and T. Aizawa, "Mechanical properties of bulk sintered titanium nitride ceramics" Mater. Sci. and Eng. A 319-321 (2001) 687-691.

DOI: 10.1016/s0921-5093(01)00936-4

Google Scholar

[8] J. R. Groza, J. D. Curtis and M. Kramer, "Field-Assisted Sintering of Nanocrystallin Titanium Nitride" J. Am. Ceram. Soc., 83 (5) (2000) 1281-1283.

Google Scholar

[9] L. Wang, W. Jiang and L. Chen, "Consolidation of Nano-Sized TiN Powders by Spark Plasma Sintering" J. Am. Ceram. Soc. 89 (7) (2006) 2364-2366.

DOI: 10.1111/j.1551-2916.2006.01066.x

Google Scholar

[10] N. J. Ashley, R. W. Grimes and K. J. McClellan, "Accommodation of non-stoichiometry in TiN1-x and ZrN1-x" J. Mater. Sci. 42, (2007) 1884-1889.

DOI: 10.1007/s10853-006-1321-z

Google Scholar