System and method for applying amorphous metal coatings on surfaces for the reduction of friction

A method comprising:

• solidifying a molten layer of a feedstock on a preexisting layer by controlling a heating source and a cooling rate so as to form an outermost layer comprising a partially amorphous alloy while avoiding formation of crystals in the molten layer and not affecting a crystalline structure of the preexisting layer, and
• phase-transforming the partially amorphous alloy into a fully amorphous alloy such that the outermost layer has a coefficient of friction (COF) of 0.15 or less;
• wherein the fully amorphous alloy comprises Fe100−(a++b+c+d)(CraXbYcZd), wherein:
• a is in a range of 10 to 50 at. %;
• b is in a range of 10 to 30 at. %;
• c is in a range of 2 to 10 at. %;
• and d is in a range of 0.5 to 10 at. %;
• or
• wherein the fully amorphous alloy comprises Ni100−(a+b+c++d)(CraXbYcZd), wherein:
• a is in a range of 10 to 50 at. %;
• b is in a range of 10 to 30 at. %;
• c is in a range of 2 to 10 at. %;
• and d is in a range of 0.5 to 10 at. %
• wherein X, Y and Z are elements, wherein the Z is selected from the group consisting of boron, carbon and combinations thereof, wherein the X and the Y are selected from the group consisting of molybdenum, copper, cobalt, aluminum, titanium, tungsten, niobium, silicon, vanadium, and combinations thereof.