Journal of Applied Chemical Science International

In this study, Zn₄₇Cu₆Mg₂₁Mn₁₉Ti₇ high entropy alloy was manufactured for temporary hard tissue implant applications. Zn alloys, which have hexagonal close packed (hcp) lattice structure, are very brittle for the biomedical implant applications. Formation of ductile body centered cubic structured solid solution could enhance the ductility of the Zn. Chemical composition of the Zn-Cu-Mg-Mn-Ti system was optimized by thermodynamic and kinetic calculations in order to obtain high entropy, solid solution, and ductile body centered cubic structure. Zn₄₇Cu₆Mg₂₁Mn₁₉Ti₇ is the optimum chemical composition of the Zn-Cu-Mg-Mn-Ti high entropy alloy system according to thermodynamic and kinetic calculations. High pressure-powder injection moulding route could reduce the segregation. Zn₄₇Cu₆Mg₂₁Mn₁₉Ti₇ alloy powder was prepared by high energy mechanical alloying (ball milling) by using pure elemental metal powders. Zn₄₇Cu₆Mg₂₁Mn₁₉Ti₇ alloy specmens were manufacture by using high pressure power injecton moulding. Polymeric-binder consisted 75% polyethylene, and 25% wax. Feedstock consisted of 45% polymeric-binder and 55% alloy powder. High pressure injection moulding was carried out at 174 ºC. After the injection process, the polmerc binder was removed by heating at 235 ºC. Sintering process was carre out at 315 ºC.