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New Cu-Free Ti-Based Composites with Residual Amorphous Matrix
Mircea Nicoara1, Cosmin Locovei2, Viorel Aurel Șerban3
1Materials and Manufacturing Engineering Department, Politehnica University Timisoara, P-ta Victoriei 2, Timisoara RO-300006, Romania. mnicoara@gmail.com.
Materials (Basel, Switzerland)
|August 5, 2017
Summary
A novel copper-free titanium-based bulk metallic glass (BMG) was developed using silver as a replacement. This new alloy shows potential for biomedical applications, avoiding copper
Area of Science:
- Materials Science
- Biomedical Engineering
- Metallurgy
Background:
- Titanium-based bulk metallic glasses (BMGs) offer promising mechanical properties and biocompatibility for biomedical uses.
- Concerns exist regarding the cytotoxicity of copper, a common alloying element in titanium BMGs, necessitating safer alternatives.
Purpose of the Study:
- To formulate a new copper-free titanium-based alloy for potential biomedical applications.
- To investigate the structural characteristics of the newly developed alloy.
Main Methods:
- Alloy design based on Morinaga's d-electron theory.
- Fabrication of cylindrical rods using centrifugal casting.
- Characterization via Differential Scanning Calorimetry (DSC), X-ray Diffraction (XRD), Optical Microscopy (OM), and Scanning Electron Microscopy (SEM).
Main Results:
- A new copper-free alloy (Ti42Zr10Pd14Ag26Sn8) was successfully formulated.
- Microstructural analysis revealed liquid phase separation with crystalline Ag and metastable intermetallic phases within residual amorphous phases.
Conclusions:
- The developed silver-containing titanium alloy adheres to the d-electron alloy design theory, indicating its BMG potential.
- The unique microstructure warrants further investigation for its suitability in biomedical applications, offering a safer alternative to copper-based alloys.
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