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Multicomponent bulk metallic glasses with elevated-temperature resistance

“…Exploiting the high GFA that enables the production of BMGs with diameters above several millimeters, glassy deposits with thickness of 0.2-0.5 mm have been applied over a wide surface area by high velocity oxy-fuel (HVOF) spray coating on to diverse substrates such as stainless steels, plain carbon steels, Al alloys and Mg alloys 29,30 . Figure 3(a) shows the cross-sectional structure of a Fe-Cr-Mo-C-B glassy coating that is fully dense and has a high compressive strength.…”

“…The Fe-Cr-Mo-C-B glassy coating demonstrates retention of corrosion and erosion resistances, and of strength, at elevated temperatures 4 . It can be used for at least 6 months, much longer than the usable life (50 days) of the best-performing stainless steel 30 . The transition to the use of lead-free solder has clear environmental benefits, and the use of the glassy coating facilitates cleaner processing, relevant for sustainability.…”

Formation of Fe-Cr-Mo Alloy Metallic Glass Coating Using High-Velocity Oxy-Fuel Apparatus with Hydrogen Gas and Its Microstructural Transition at Elevated Temperatures

“…A metallic glass is an amorphous material characterized by high toughness, high corrosion resistance, superior soft-magnetic properties, and so forth. Since the empirical laws for alloying and compositional design were reported in the 1990s 1,2) , metallic glasses have been developed and used in practical applications [3][4][5][6] . In the 2000s and 2010s, many studies focused on improving their corrosion resistance, abrasion resistance, and magnetic properties.…”