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Effect of high pressure on the preparation of Pd–Si–Cu bulk nanocrystalline material

Published online by Cambridge University Press:  31 January 2011

B. Yao ,
B. Z. Ding ,
G. L. Sui ,
A. M. Wang  and
Z. Q. Hu
B. Yao
Affiliation:
State Key Lab. of RSA, Institute of Metal Research, Academia Sinica, Shenyang, 110015, and Siping Normal College, Siping 136000, People's Republic of China
B. Z. Ding
Affiliation:
State Key Lab. of RSA, Institute of Metal Research, Academia Sinica, Shenyang, 110015, People's Republic of China
G. L. Sui
Affiliation:
Siping Normal College, Siping, 136000, People's Republic of China
A. M. Wang
Affiliation:
State Key Lab. of RSA, Institute of Metal Research, Academia Sinica, Shenyang, 110015, People's Republic of China
Z. Q. Hu
Affiliation:
State Key Lab. of RSA, Institute of Metal Research, Academia Sinica, Shenyang, 110015, People's Republic of China
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Abstract

A Pd–Si–Cu bulk nanocrystalline material was prepared by quenching the melted Pd78Si16Cu6 alloy at a cooling rate of 200 K/s under 2–6 GPa. It was found that the nanocrystalline material consists of Pd(Cu) disordered solid solution and a metastable phase-II, Pd4Si. The grain size was found to decrease with increasing pressure. The influence of high pressure on the grain size of bulk nanocrystalline material is discussed, and a possible formation mechanism is proposed.

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Type
Articles
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Journal of Materials Research , Volume 11 , Issue 4 , April 1996 , pp. 912 - 916
Copyright
Copyright © Materials Research Society 1996

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