The bioactive calcium titanate coating was prepared by laser cladding on a (Zr_0.62Cu_0.23Fe_0.05Al_0.1)₉₇Ag₃ bulk metallic glass. The coating, which was mainly composed with dendrite calcium titanate and a little calcium pyrophosphate, formed a strong bonding with the substrate. The cladding process generated a crystallized heat-affected zone with a thickness of 300 μm and other parts in the substrate remained amorphous structure after laser cladding. It was demonstrated that surfaces of Zr-based bulk metallic glasses can be made bioactive and that laser cladding techniques were useful methods in purpose of making Zr-based bulk metallic glass surface bioactive.

http://www.sciencedirect.com/science/article/pii/S0167577X12006799?v=s5