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Indentation Testing of Bulk Zr0.5Hf0.5Co1-xIrxSb0.99Sn0.01 Half-Heusler Alloys

Published online by Cambridge University Press:  01 February 2011

Melody A Verges ,
Paul J Schilling ,
Jeffrey D Germond ,
Puja Upadhyay ,
William K Miller ,
Nathan J. Takas  and
Pierre F. P. Poudeu
Melody A Verges
Affiliation:
[email protected], University of New Orleans, Mechanical Engineering, New Orleans, Louisiana, United States
Paul J Schilling
Affiliation:
[email protected], University of New Orleans, Mechanical Engineering, New Orleans, Louisiana, United States
Jeffrey D Germond
Affiliation:
[email protected], University of New Orleans, Mechanical Engineering, New Orleans, Louisiana, United States
Puja Upadhyay
Affiliation:
[email protected], University of New Orleans, Mechanical Engineering, New Orleans, Louisiana, United States
William K Miller
Affiliation:
[email protected], University of New Orleans, Mechanical Engineering, New Orleans, Louisiana, United States
Nathan J. Takas
Affiliation:
[email protected], University of New Orleans, Advanced Materials Research Institute, 2000 Lakeshore Dr., New Orleans, Louisiana, 70148, United States, 1(504)280-5629, 1(504)280-3185
Pierre F. P. Poudeu
Affiliation:
[email protected], University of New Orleans, Chemistry, 2000 Lakeshore Dr, SC2005, New Orleans, Louisiana, 70148, United States, (504)2801057, (504)2803185
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Abstract

Indentation tests were performed to assess the influence of compositional changes on the mechanical properties of several half-Heusler compounds with the general composition Zr0.5Hf0.5Co1-xIrxSb0.99Sn0.01 (x=0.0,0.1,0.3,0.5,0.7). These samples were synthesized by high temperature solid-state reactions and were consolidated by hot-pressing. Indentation measurements were obtained using both microhardness testing (Vickers) and depth-sensing nanoindentation. These measurements were used to determine the microhardness and the elastic modulus of each half-Heusler compound. The Vickers hardness values were found to range between 876 and 964. A slight increase in hardness was observed with the addition of iridium. The elastic stiffness values ranged from 229 GPa to 246 GPa. Here, a slight decrease in stiffness was observed with the addition of iridium.

Keywords

thermoelectrichardnessnano-indentation
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1267: Symposium DD – Thermoelectric Materials 2010-Growth, Properties, Novel Characterization Methods and Applications , 2010 , 1267-DD05-23
Copyright
Copyright © Materials Research Society 2010

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References

1 Lawn, B. R. Fracture of Brittle Solids, second ed., (Cambridge University Press, 1993) pp. 258–263.Google Scholar
2 Zeng, J. Y. Sato, Y. Ohkubo, C. Hosoi, T. J. Prosthet. Dent. 94, 53 (2005).Google Scholar
3 Morita, K. Umenzawa, A. Yamato, S. Makishima, A. J. Am. Ceram. Soc. 23, 1005 (2003).Google Scholar
4 Rice, R. W. Mechanical Properties of Ceramics and Composites, (Marcel Dekker, 2000) pp. 308–312.Google Scholar
5 Kawaharada, Y. Kurosaki, K. Muta, H. Uno, M. Yamanka, S. J. Alloys Compd. 381, 9–11 (2004).Google Scholar
6 Ren, F. Case, E. D. Timm, E. J. Schock, H. J. J. Alloys Compd. 455, 340–345 (2008).Google Scholar
7 Gelbstein, Y. G., Gotesman, Lishzinker, Y. Dashevsky, Z. Dariel, M. P. Scripta Materialia 58, 251–254 (2008).Google Scholar
8 Ur, S. Kwon, J. Kim, II-H. Nash, P. Lee, Y. Kweon, S. Hong, T. 2005 ICT Proc., IEEE Cat. No. 05TH8854C, 406 (2005).Google Scholar
9 Seetawan, T. Amornkitbamrung, V. Burinprakhon, T. Maensiri, S. Kurosaki, K. Uno, M. Yamanaka, S., J. Alloys Compd. 403, 308–311 (2005).Google Scholar
10 Ren, F. Case, E. D. Timm, E. J. Schock, H. J. Philosophical Magazine 87, 4907–4934 (2007).Google Scholar
11 Kosuga, A. Uno, M. Kurosaki, K. Yamanaka, S. J. Alloys Compd. 387, 52–55 (2005).Google Scholar
12 Takas, N. Zhao, H. Poudeu, P. F. P. Mat. Res. Soc. Proc. 1218 Z03–02 (2009).Google Scholar
13 Yamanaka, S. Maekawa, T. Muta, H. Matsuda, T. Kobayashi, S. J. Alloys Compd. 381, 295–300 (2004).Google Scholar
14 Maekawa, T. Kurosaki, K. Yamanaka, S. J. Alloys Compd. 416, 214–217 (2006).Google Scholar