Preparation of Nano to Submicro‐Porous TiMo Foams by Spark Plasma Sintering

Abstract

The nano to submicro-porous b-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 b-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.

Machine-learning for designing nanoarchitectured materials by dealloying

“…To establish ML methods to address the above classification problems, training and testing datasets were collected from a total of 21 different peer-reviewed papers, including 13 discussing the LMD method 8,10,11,14,19,[51][52][53][54][55][56][57][58][59][60][61][62][63] , 4 papers addressing the SSID method 17,20,64,65 , and 4 papers examining the aqueous solution dealloying (ASD) method [66][67][68][69] , listed in Supplementary Table 3. These data were then used to classify miscible/immiscible pairs.…”

Formation of a nanoporous layer on the surface of silver and copper by dealloying of thermal diffusion coatings Me5Zn8 (Me=Ag, Cu) in a deep eutectic solvent

“…Nano-porous metals with a specific surface area in the range of a few square metres per gram to hundreds and even thousands m 2 /g have gained recognition for their application in the production of catalysts, sensors, super-capacitors and micro-electrodes, and are being used in biochemistry, medicine, production of nuclear energy, etc. [2][3][4][5][6][7][8][9][10]. For example, nano-porous silver (np-Ag) is used as a selective catalyst in the hydrogenation of unsaturated hydrocarbons [10], electrochemical reduction of carbon dioxide [11] and electrochemical oxidation of aldehydes [12].…”