Paper Title:
Controlled Elasticity in Nano-Structured Metallic Glass by Ion Implantation Method
  Abstract

Different reactivity of ions has been implanted into Zr-Cu metallic glass to obtain nano-structured surface with controlled elasticity. The penetration of glass forming element of Ni+ into crystalline Zr-Cu stabilizes glassy phase to induce crystalline-amorphous (c-a) transition during implantation process. In the meanwhile, penetration of N+ into glassy matrix induces precipitation of (Zr, Cu)N at the mean penetration depth of N. Critical N concentration for nitride formation is estimated to be (Zr,Cu)-20at%N, which also suggests existing of N solid solution of glassy phase. Inert element of Ar+ yields dispersion of nano-voids among glassy matrix. Nano-indentation tests reveal that Young’s modulus of ion implanted glassy film dramatically changes with respect to the induced nano-structure, to decrease 0.4 times for Ar+, to increase 1.3 times for N+ as comparison with that for as-deposited state.

  Info
Periodical
Materials Science Forum (Volumes 561-565)
Main Theme
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
1315-1318
DOI
10.4028/www.scientific.net/MSF.561-565.1315
Citation
S. Muraishi, H. Naito, J. Shi, Y. Nakamura, T. Aizawa, "Controlled Elasticity in Nano-Structured Metallic Glass by Ion Implantation Method", Materials Science Forum, Vols. 561-565, pp. 1315-1318, 2007
Online since
October 2007
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