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Bulk metallic glasses (BMGs), also called amorphous alloys, have totally different structure from the conventional crystalline metals and are well-known for their high strength and high hardness, large elastic limits, and, in particular, for their outstanding corrosion and wear resistance. During the past several decades, despite the understanding gained on the formation and microstructure, as well as the mechanisms related to their unique mechanical properties that have achieved great progress, industrial applications of BMGs are still very scant due to mostly the poor ductility at room temperature. In contrast, amorphous coatings based on BMG systems have received increasing attention and interest in recent years because of the combination of the excellent properties inherited from the bulk glassy alloys and the potential engineering applications for amorphous coatings. In this article, we briefly summarize the past …