TY - GEN
T1 - Controlled elasticity in nano-structured metallic glass by ion implantation method
AU - Muraishi, Shinji
AU - Naito, Hirono
AU - Shi, Jhi
AU - Nakamura, Yoshio
AU - Aizawa, Tatsuhiko
PY - 2007
Y1 - 2007
N2 - 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.
AB - 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.
KW - Coating
KW - Elastic modulus
KW - Ion implantation
KW - Metallic glass
KW - Nano indentation
UR - http://www.scopus.com/inward/record.url?scp=38349121353&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=38349121353&partnerID=8YFLogxK
U2 - 10.4028/0-87849-462-6.1315
DO - 10.4028/0-87849-462-6.1315
M3 - Conference contribution
AN - SCOPUS:38349121353
SN - 0878494626
SN - 9780878494620
T3 - Materials Science Forum
SP - 1315
EP - 1318
BT - Selected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
PB - Trans Tech Publications Ltd
T2 - 6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
Y2 - 5 November 2007 through 9 November 2007
ER -