Niobium addition improves the corrosion resistance of TiHfZrNbx high-entropy alloys in Hanks’ solution

Effects of molybdenum on hot deformation behavior and microstructural evolution of Fe 40 Mn 40 Co 10 Cr 10 C 0.5 high entropy alloys

“…Further, the formation of expanded SFs decreased and provided a driving force for the martensite bands nucleation. This finding is in line with previous work demonstrating the fcc to hcp phase transformation at high temperatures in FeMnCoCrNi and Fe 50 Mn 30 Co 10 Cr 10 HEAs [ 5 , 6 ].…”

Effects of Zr Addition on the Microstructural Evolution, Mechanical Properties, and Corrosion Behavior of Novel Biomedical Ti–Zr–Mo–Mn Alloys

“…The Mott–Schottky analysis was used to analyze the semiconductive properties of the prepared passivation film after 12 h immersion in SBF solution (in Figure ). All the tested samples exhibited a characteristic of n-type semiconductors [positive slopes in the Mott–Schottky ( C –2 – E ) plots], in which the oxygen vacancies served as the dominant charge carriers. , The following equation was used to calculate the charge carrier density ( N D )­ where ε 0 is the vacuum dielectric constant (8.854 × 10 –14 F/cm), ε is a dielectric constant of the oxide (ε TiO 2 = 48 and ε ZrO 2 = 25), q represents the charge of an electron (1.602 × 10 –19 C), N D is the donor concentration, E represents the passivation film formation potential, E FB is the flat band potential and k is the Boltzmann constant (1.38 × 10 –23 J/K), T represents the absolute temperature, and s is the slope of the linear region in the Mott–Schottky curve.…”

Research progress of metal biomaterials with potential applications as cardiovascular stents and their surface treatment methods to improve biocompatibility

“…The TiHfZrNb x HEA with a high radial strength has shown to be ideal for the preparation of small diameter vascular stents. Tanji et al [ 60 ] concluded that the TiHfZrNb x HEA exhibited higher corrosion resistance compared to standard CP-Ti and Ti 6 Al 4 V alloy biomaterials, making it a promising high performance medical implant material.…”