Thermodynamic model for solid-state amorphization of pure elements by mechanical-milling

Mechanical alloying of amorphous Al–SiO2 powders

“…For example, Fechet et al reported that the excess enthalpy of about 30% of the heat of fusion is stored in the nanocrystalline metals after high-energy ball milling [13]. The critical grain sizes for solid-state amorphization of various pure metalloids and metals, have been successfully predicted by Zhang et al [14]. In addition, the pressure of about 10 9 Pa exists between the contacting surfaces during collisions for ball to ball and ball to vial.…”

Amorphization of CuZr Based Alloy Powders by Mechanical Milling

“…Observing the microstructures of the master alloys in Fig. 1, it can be seen that an unknown phase with a composition of Al 13 Cu 37 Zr 50 (at%) formed in both alloys, which has a distorted cubic unit cell with a 0 = 12,18 Å, γ = 90°. Identified CuZr phase can be observed in Cu 49 Zr 45 Al 6 , which was found in the Ni containing alloy , as well.…”

CHARACTERIZATION OF AMORPHOUS ALLOY Co87Nb46B15

“…Amorphous materials can be produced by various methods, techniques: thermal evaporation (or vapor deposition) metals, sputtering (or sputtering), chemical vapor deposition or CVD (chemical vapor deposition), mechanical grinding high energy (mechanical alloying), melt spinning mechanical alloying, mechanical alloying and casting the electric arc furnace [2].…”