Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-28T00:34:18.636Z Has data issue: false hasContentIssue false
  • English
  • Français

Atmosphere effects of the amorphization reaction in NiZr by ball milling

Published online by Cambridge University Press:  31 January 2011

K. Aoki ,
A. Memezawa  and
T. Masumoto
K. Aoki
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980, Japan
A. Memezawa
Affiliation:
Graduate School, Tohoku University, Sendai 980, Japan
T. Masumoto
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980, Japan
Get access

Abstract

An intermetallic compound c–NiZr and a mixture of elemental powders of nickel and zirconium [Ni50Zr50 (at. %)] have been mechanically ground (MG) and mechanically alloyed (MA), respectively, using a high-energy ball mill in various atmospheres. The products were characterized by x-ray diffraction, transmission electron microscopy, differential scanning calorimetry, and chemical analysis as a function of milling time. An amorphous a–NiZr alloy was prepared by both MG and MA in an argon atmosphere. By MG of NiZr, an amorphous nitride a–NiZrN0.15 was synthesized in a nitrogen atmosphere, while a crystalline hydride c–NiZrH3 was formed in a hydrogen atmosphere. On the other hand, ZrN and ZrH2 were formed by MA in a nitrogen and a hydrogen atmosphere, respectively. The amorphization reaction was observed between ZrH2 and Ni by further MA in a hydrogen atmosphere, and a mixture of a–NiZrxHy (x < 1) and ZrH2 was obtained. However, no amorphization was observed by MA between ZrN and Ni in a nitrogen atmosphere. The effects of the milling atmosphere on the phase formations during MG and MA are discussed based on the gas absorption rate.

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 2 , February 1993 , pp. 307 - 313
Copyright
Copyright © Materials Research Society 1993

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Koch, C.C.Cavin, O.B.McKamey, C. G. and Scarbrough, J.O.Appl. Phys. Lett. 43, 1017 (1983).CrossRefGoogle Scholar
2Eckert, J.Schultz, L. and Urban, K.Appl. Phys. Lett. 55, 117 (1989).CrossRefGoogle Scholar
3Hellstern, E.Fecht, H. J.Fu, Z. and Johnson, W. L.J. Appl. Phys. 65, 305 (1989).CrossRefGoogle Scholar
4Weeber, A. W. K. van der Meer, Bakker, H.Boer, F. R. De, Thijsse, B. J., and Jongste, J.F.J. Phys. F: Met. Phys. 16, 1897 (1986).CrossRefGoogle Scholar
5Eckert, J.Schultz, L. and Urban, K.J. Less-Common Met. 145, 283 (1988).CrossRefGoogle Scholar
6Eckert, J.Schultz, L.Hellstern, E. and Urban, K.J. Appl. Phys. 64, 3224 (1988).CrossRefGoogle Scholar
7Gaffet, E.Merk, N.Mertin, G. and Bigot, J.J. Less-Common Met. 145, 251 (1988).CrossRefGoogle Scholar
8Schulz, R.Trudeau, M. L. and Neste, A. van, Mater. Sci. Eng. A 134, 1354 (1991).CrossRefGoogle Scholar
9Eckert, J.Schultz, L. and Urban, K.J. Non-Cryst. Solids 130, 273 (1991).CrossRefGoogle Scholar
10Schwarz, R. B.Petrich, R. R. and Saw, C. K.J. Non-Cryst. Solids 76, 281 (1985).CrossRefGoogle Scholar
11Hellstern, E. and Schultz, L.Appl. Phys. Lett. 49, 1163 (1986).CrossRefGoogle Scholar
12Aoki, K.Memezawa, A. and Masumoto, T.Appl. Phys. Lett. 61 (1992, in press).Google Scholar
13Aoki, K.Yamamoto, T. and Masumoto, T.Scripta Metall. 21, 365 (1987).CrossRefGoogle Scholar
14Aoki, K.Yanagitani, A.Li, X.G., and Masumoto, T.Mater. Sci. Eng. A 97, 35 (1988).CrossRefGoogle Scholar
15Aoki, K.Li, X.G., Aihara, T. and Masumoto, T.Mater. Sci. Eng. A 133, 565 (1991).Google Scholar
16Suzuki, K.J. Non-Cryst. Solids 112, 23 (1989).CrossRefGoogle Scholar
17El-Eskandarany, M. S., Aoki, K. and Suzuki, K.Appl. Phys. Lett. 60, 1562 (1992).CrossRefGoogle Scholar
18Lee, P.Y. and Koch, C.C.Appl. Phys. Lett. 50, 1578 (1987).Google Scholar