Recent progress in metallic glasses in Taiwan

Polyamorphism of a Ce-based bulk metallic glass by high-pressure and high-temperature density measurements

“…Bulk metallic glasses (BMG) are among the most interesting amorphous materials which combine the electric conductivity of metals with glassy structural disorder, thus promising to be industrial products with appealing performances [1][2][3]. Recently, rare earth based metallic glasses including cerium based ones (Ce-MGs) have been found to display thermoplastic behavior with very low glass transition temperature (T g < 373 K) and low Young's modulus in comparison with classical amorphous matter [4][5][6][7].…”

Binary Zr–Ni/Co metallic glass films: Role of the structural state on their durability

“…Bulk metallic glasses (BMGs) are today among the most-actively studied materials, since they are regarded as likely future newcomers for many engineering advanced applications [1][2][3]. They present outstanding characteristics and a unique combination of properties such as large elastic deformation, interesting toughness, near-theoretical strength to stiffness ratios [4], soft magnetic and mechanical properties [5].…”

“…The strong passive ability yields Zr-based alloys to be still one of the most investigated bulk glass formers [1,15,2,3]. The zirconium belonging to the "valve metal" class, is indeed prone to form a thin passive film playing the role of a barrier layer with low ionic and electronic conductivities.…”

“…The passive layer formed on the surface exhibits a very low electric conductivity, so that the charge transfer involved with hydrogen and oxygen in acidic or neutral solutions is often delayed [1][2][3]15].…”

Thermoplastic forming ability of a Mg-base bulk metallic glass composites reinforced with porous Mo particles

“…For solving the problem, extensive efforts have been devoted to develop Mg-based metallic glasses composites (BMGCs) recently. This includes the incorporation of in-situ precipitated nanocrystalline phases, ex-situ added ductile metals or refractory ceramic particles in the Mg-based BMGCs, which exhibit improved compressive strengths and remarkable plastic strains [15][16][17][18][19][20][21][22][23][24].…”