DOI: 10.1111/j.1151-2916.2000.tb01281.x. Synthesis and Characterization of Ti<sub>3</sub>AlC<sub>2</sub>

Synthesis and Characterization of Ti3AlC2

10.1111/j.1151-2916.2000.tb01281.x

Crossref journal-article

Wiley

Journal of the American Ceramic Society (311)

Abstract

Polycrystalline bulk samples of Ti3Al1.1C1.8 have been fabricated by reactively hot isostatically pressing a mixture of titanium, graphite, and Al4C3 powders at a pressure of 70 MPa and temperature of 1400°C for 16 h. The hot isostatically pressed samples are predominantly single phase (containing ∼4 vol% Al2O3), fully dense, and have a grain size of ∼25 μm. This carbide is similar to Ti3SiC2, with which it is isostructural, and has an unusual combination of properties. It is relatively soft (Vickers hardness of ∼3.5 GPa) and elastically stiff (Young's modulus of 297 GPa and shear modulus of 124 GPa); yet, it is lightweight (density of 4.2 g/cm3) and easily machinable. The room‐temperature electrical resistivity is 0.35 ± 0.03 μΩ·m and decreases linearly as the temperature decreases. The temperature coefficient of resistivity is 0.0031 K−1. The coefficient of thermal expansion, in the temperature range of 25°—1200°C, is 9.0 (± 0.2) × 10−6 K−1. The room‐temperature compressive and flexural strengths are 560 ± 20 and 375 ± 15 MPa, respectively. In contrast to flexure, where the failure is brittle, the failure in compression is noncatastrophic and is accompanied by some plasticity. The origin of that plasticity is believed to be the formation of a “shear” band that is oriented at an angle of ∼45° to the applied load. Ti3Al1.1C1.8 also is a highly damage‐tolerant material; a 10‐kg‐load Vickers indentation made in a bar 1.5 mm thick reduces the post‐indentation flexural strength by ∼7%. This material also is quite resistant to thermal shock. At temperatures of >1000°C, the deformation in compression is accompanied by significant plasticity and very respectable ultimate compressive stresses (200 MPa at 1200°C).

Bibliography

Tzenov, N. V., & Barsoum, M. W. (2000). Synthesis and Characterization of Ti3AlC2. Journal of the American Ceramic Society, 83(4), 825â832. Portico.

Authors 2

Nikolay V. Tzenov (first)
Michel W. Barsoum (additional)

References 27 Referenced 610

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{'key': 'e_1_2_1_6_2', 'first-page': '197', 'article-title': 'A Progress Report on Ti3SiC2, Ti3GeC2 and the H‐Phases, M2BX', 'volume': '5', 'author': 'Barsoum M. W.', 'year': '1997', 'journal-title': 'J. Mater. Synth. Process.'} / J. Mater. Synth. Process. / A Progress Report on Ti3SiC2, Ti3GeC2 and the H‐Phases, M2BX by Barsoum M. W. (1997)
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P.Finkel M. W.Barsoum andT.El‐Raghy; unpublished results.
A. T.Procopio M. W.Barsoum andT.El‐Raghy “Characterization of Ti4AlN3 ”Metall. Mater. Trans. in press.
M. W.Barsoum M.Ali andT.El‐Raghy “Processing and Characterization of Ti2AlC Ti2AlN and Ti2AlC0.5N0.5 ”Metall. Mater. Trans. in press.
10.1016/S1359-6454(99)00351-1
10.1007/BF00902438
10.1063/1.370521
10.1063/1.372080 / J. Appl. Phys. / Low Temperature Dependencies of the Elastic Properties of Ti3Al1.1C1.8, Ti4AlN3 and Ti3SiC2 by Finkel P. (2000)
{'key': 'e_1_2_1_27_2', 'first-page': '93', 'article-title': 'Ti3SiC2‐Based Materials Produced by Self‐Propagating High Temperature Synthesis and Ceramic Processing', 'volume': '1', 'author': 'Pampuch R.', 'year': '1993', 'journal-title': 'J. Mater. Synth. Process.'} / J. Mater. Synth. Process. / Ti3SiC2‐Based Materials Produced by Self‐Propagating High Temperature Synthesis and Ceramic Processing by Pampuch R. (1993)
N.Tzenov A.Procopio T.El‐Raghy andM. W.Barsoum; unpublished results.

Dates

Type	When
Created	15 years ago (July 24, 2010, 7:56 a.m.)
Deposited	1 year, 8 months ago (Nov. 23, 2023, 1:53 a.m.)
Indexed	3 weeks, 2 days ago (July 28, 2025, 5:10 p.m.)
Issued	25 years, 4 months ago (April 1, 2000)
Published	25 years, 4 months ago (April 1, 2000)
Published Online	20 years, 8 months ago (Dec. 21, 2004)
Published Print	25 years, 4 months ago (April 1, 2000)

Funders 0

None

BibTeX

@article{Tzenov_2000, title={Synthesis and Characterization of Ti3AlC2}, volume={83}, ISSN={1551-2916}, url={http://dx.doi.org/10.1111/j.1151-2916.2000.tb01281.x}, DOI={10.1111/j.1151-2916.2000.tb01281.x}, number={4}, journal={Journal of the American Ceramic Society}, publisher={Wiley}, author={Tzenov, Nikolay V. and Barsoum, Michel W.}, year={2000}, month=apr, pages={825–832} }

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