Abstract
Pulse electric current sintering (PECS) was tried for Ir-25 at.% Nb (Ir3Nb), which has a high melting temperature of about 2435 °C. Ingot powder was made by crashing an ingot, and the ingot powders were sintered at temperatures between 1700 and 1900 °C up to 2 h under 40 MPa. Pure-metal powder was mixed to achieve a composition of Ir-25 at.% Nb, and the pure-metal powders were sintered at a temperature between 1700 and 1900 °C for up to 1 h. The microstructure and phase structures of sintered samples were investigated by scanning electron microscopy (SEM) and x-ray diffractometry. The sintering mechanism and problems for Ir3Nb in PECS are discussed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
International Tables of Selected Constants, vol. 16, Metals, Thermal and Mechanical Data.
H. Jehon: J. Less Common Met., 1984, vol. 100, p. 321.
Y. Yamabe-Mitarai, Y. Ro, T. Maruko, and H. Harada: Metall. Mater. Trans. A, 1998, vol. 29, pp. 537–49.
Y. Yamabe-Mitarai, S. Nakazawa, and H. Harada: Scripta Mater., 2000, vol. 43, pp. 1059–64.
B.L. Mordike and C.A. Brookes: Platinum Met. Rev., 1960, vol. 4, pp. 94–99.
R.W. Douglass, A. Krier, and R.I. Jafee: Report No. NP-10939, Batelle Memorial Institute, 1961.
Y. Gu, Y. Yamabe-Mitarai, Y. Ro, and H. Harada: Scripta Mater., 1999, vol. 40 (11), pp. 1313–19.
N.I. Timofeev, A.V. Ermakov, V.A. Dmitriev, and P.E. Panfilov: The Metallurgy and Mechanical Behavior of Iridium, Urals Branch of Russian Academy of Science, Ekaterinburg, 1996, pp. 105–08 (in Russian).
C.T. Liu, H. Inouye, and A.C. Schaffhauser: Metall. Mater. Trans. A, 1981, vol. 12A, pp. 993–1001.
D.E. Harasyn, R.L. Heestand, and C.T. Liu: Mater. Sci. Eng., 1994, vol. A187, pp. 155–60.
S.A. David and C.T. Liu: Met. Technol., 1980, pp. 102–06.
S.A. David and C.T. Liu: Welding Res. Suppl., 1982, pp. 157-s-163-s.
S. Miura, Y. Terada, and T. Mohri: Symp. of Platinum Group Metals and Alloys, JIM, 2000, pp. 21–24 (in Japanese).
P. Murray, D.T. Lively, and A.E. Williams: Ceramic Fabrication Process, 1957, p. 147.
K. Nishimoto, K. Saida, and R. Tochiku: Proc. SPS Concerning a New Approach for Bulk Sintering Process, JIM, Sendai, Japan, 1999, pp. 36–44 (in Japanese).
H. Hosoda, S. Watanabe, and S. Hanada: Proc. Mater. Res. Symp. 1998, p. KK8.33.
N. Murayama: Ceramics, 1997, vol. 32 (6), pp. 445–49 (in Japanese).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Yamabe-Mitarai, Y., Harada, H. First trial of pulse electric current sintering for high-temperature material Ir3Nb. J. of Materi Eng and Perform 10, 685–692 (2001). https://doi.org/10.1361/105994901770344557
Received:
Issue Date:
DOI: https://doi.org/10.1361/105994901770344557