Micro-arc oxidation of Ti6Al4V and Ti6Al7Nb alloys for biomedical applications

► Ca and P incorporated rough TiO2 layers were generated on Ti6Al4V and Ti6Al7Nb. ► TiO2 were in the form of anatase and rutile. ► Formation of TiO2 layers by the MAO process enhanced the bioactivity. ► After MAO, SAOS-2 cells had higher rate of attachment on Ti6Al4V than Ti6Al7Nb. ► In original state cell attchment on Ti6Al7Nb was higher than on Ti6Al4V.