By Anupum Pant
Bulk Metallic Glasses (BMGs) A.K.A Amorphous metals, give you the goodness of both metals and glasses. They literally are glasses made out of metal. Unlike the most crystalline metals, BMGs are made by cooling certain liquid metals very quickly to lock the disordered glassy structure in place. They aren’t crystalline like your everyday metals and instead have a structure like that of glasses – disordered.
Some of these BMGs have amazing properties. Like super high hardness, about 3 times the hardness of steel is one of the most alluring properties they have.
They’ve been around since the 60s, and mass producing them has always been tough. Until now, BMGs were never used for something as ordinary as a smartphone case. But the recent innovation in manufacturing coming from a Materials scientist at Yale will probably soon bring to the market these new iPhone covers that’d be 50 times harder than plastic, or 10 times harder than Aluminium, and almost three times the hardness of steel.