Abstract
High-entropy alloys (HEAs) have great prospects for applications as biomedical materials due to their excellent properties of high strength and corrosion resistance. In this study, a co-deposition technology with two targets was used to prepare 16 independent Ti-Zr-Nb-Ta HEA samples with composition gradient distribution. Afterwards, these samples' chemical compositions, structures, and properties were systematically studied, and it was found that there was a non-linear relationship between the compositions, structures, and properties. The chemical composition of Ti12.50Zr11.56Nb12.71Ta46.62O16.61 HEA sample with superior comprehensive properties was efficiently screened out, and its nanohardness, open circuit potential (OCP) value, and corrosion current density were identified to be 12.91 GPa, −0.37 VSCE, and 3.91 × 10−9 A·cm−2, respectively. This parallel co-deposition method offered a new efficient approach to develop advanced biomedical HEAs.
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