Nearly full density Ni{sub 52.5}Nb{sub 10}Zr{sub 15}Ti{sub 15}Pt{sub 7.5} bulk metallic glass obtained by spark plasma sintering of gas atomized powders

Journal Article · Mon Jun 11 00:00:00 EDT 2007 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2748102· OSTI ID:20971962

Guoqiang, Xie; Louzguine-Luzgin, Dmitri V; Kimura, Hisamichi; Inoue, Akihisa ^[1]

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1. Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)

Ni-based bulk metallic glasses (BMGs) with a large size were fabricated by spark plasma sintering (SPS) of a gas-atomized Ni{sub 52.5}Nb{sub 10}Zr{sub 15}Ti{sub 15}Pt{sub 7.5} glassy alloy powder. The structure and thermal stability of the sintered specimens as well as the interface characteristics between powder particles were investigated. The sintered glassy specimens with nearly 100% relative density were obtained by the SPS process at a sintering temperature of 773 K with a loading pressure of 600 MPa. It was achieved using relatively low sintering temperature, short holding time, and rapid cooling during the SPS process. The results suggest that the BMGs fabricated by the SPS process opens possibilities of application as structural materials offering excellent properties and satisfying large-size requirements.

• OSTI ID: 20971962
• Journal Information: Applied Physics Letters, Vol. 90, Issue 24; Other Information: DOI: 10.1063/1.2748102; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
INTERFACES
METALLIC GLASSES
NICKEL ALLOYS
NIOBIUM ALLOYS
PLASMA
PLATINUM ALLOYS
POWDERS
PRESSURE RANGE MEGA PA 100-1000
SINTERING
TITANIUM ALLOYS
ZIRCONIUM ALLOYS