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Preparation of Nano to Submicro‐Porous TiMo Foams by Spark Plasma Sintering
Author(s) -
Zhang Faming,
Wang Lili,
Li Ping,
Liu Suli,
Zhao Peipei,
Dai Ge,
He Siyuan
Publication year - 2017
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201600600
Subject(s) - materials science , spark plasma sintering , nanoporous , alloy , porosity , molybdenum , nano , metallurgy , elastic modulus , sintering , titanium alloy , composite material , chemical engineering , nanotechnology , engineering
The nano to submicro‐porous β‐titanium molybdenum (TiMo) foams are prepared by dealloying of (TiMo) 1–x Cu x master alloys using a solid state dealloying method. The dealloying is performed within Mg powders by a pressureless spark plasma sintering (SPS). Experimental results show that Cu atoms in the master alloy are selectively dissolved into Mg powders during heating, the Ti and Mo atoms are spontaneously organized into homogeneous open‐cell β‐TiMo foams. The foams from (Ti15Mo) 40 Cu 60 alloy have BET surface area of 28.96 m 2 g –1 and pore sizes mostly in the range of 3.42 to 50 nm. The hardness and elastic modulus of the foams decrease dramatically with nanoporosities from 55.1 to 74.2%. Solid state dealloying by using pressureless SPS is promising for developing functional nanoporous (NP) Ti alloy foams.