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5072876 
Journal Article 
Tunable Corrosion Behavior of Calcium Phosphate Coated Fe-Mn-Si Alloys for Bone Implant Applications 
Drevet, R; Zhukova, Y; Kadirov, P; Dubinskiy, S; Kazakbiev, A; Pustov, Y; Prokoshkin, S 
2018 
1 
Metallurgical and Materials Transactions A
ISSN: 1073-5623
EISSN: 1543-1940 
49A 
12 
6553-6560 
WOS:000450297300060 
This work deals with the electrodeposition of calcium phosphate coatings on the surface of Fe-Mn-Si alloys which is designed for bone implant applications. Three different alloy compositions are considered (Fe-23Mn-5Si, Fe-26Mn-5Si and Fe-30Mn-5Si, all in wtpct). In order to explore the impact of hydrogen peroxide (H2O2) on the electrodeposition process, two different electrolytic solutions are studied, one that contains no H2O2 and the other that contains 9volpct H2O2. The physicochemical characterizations reveal that the electrodeposited coating is made of an apatite phase of low crystallinity with less porosity when hydrogen peroxide is added to the electrolyte solution. The corrosion measurements of the uncoated and coated alloys are also carried out during immersion in Hank's solution at 310K (37 degrees C), a physiological solution that simulates the inorganic composition of the body fluids. Interestingly, it was found that the manganese content in the alloy and the porosity of the coating both modify the corrosion behavior, i.e., the biodegradability of the Fe-Mn-Si alloy immersed in the physiological environment. Hence, the corrosion behavior of the calcium phosphate-coated Fe-Mn-Si alloys is tunable as a function of the experimental parameters used during the synthesis of the material.