Bulk metallic glasses as biomaterials (a mini-review)

Nowadays, bulk metallic glasses (BMGs) have been studied substantially in current years due to their exciting mechanical, chemical, and other significant properties. Basically, one of the essential features that hinder the commercialization of bulk metallic glass (BMG) is brittleness at room temperature, which makes the manufacture of this product not cost-effective. Many efforts have been investigated to improve the flexibility of BMGs. The amorphous structure of bulk metallic glass (BMG) results in outstanding properties that can overcome the properties of similar metallic biomaterials. Bulk metallic glass (BMG) with high glass-forming capacity shows potential as implantable biomedical materials. Still, the exceptionally high Young’s modulus compared to human bone significantly impacts its clinical practicality. In particular, Ti-based bulk metallic glass is an interesting candidate for use as a biomaterial or as a structural material in light technology. Bulk metallic glasses (BMGs), also called amorphous alloys, are metals with unstable glass states and have higher strength, higher elasticity, higher fracture toughness, and lower Young’s modulus than crystalline alloys. They have good corrosion resistance and are promising for orthopedic and dental materials. Ti-based porous BMG alloy showed three times higher yield strength than natural bone, which simultaneously matched Young’s modulus of natural bone and showed high corrosion resistance and excellent biocompatibility.

Keywords:

Bulk Metallic Glass (BMG) , amorphous alloys , biomaterials