**2.2.1 Experimental materials and media**

The experimental materials were the examples of TiNi SMA, TiNi SMA after anodicoxidation and TiNi SMA after cathodic-electrodeposition respectively. The size of all the samples was in 10mm×10mm×1mm.

SBF (Simulated body fluid) solution[16] (making up to PH7.40 with diluted hydrochloric acid and NaOH solution)[17] and fresh blood of New Zealand rabbit.

SBF solution ingredient: Na2SO4 0.07g + Na2HPO4 0.36g + NaHCO3 0.35g + NaCl 7.88g + KCl 0.37g + MgCl2 0.31 + CaCl2 0.28g + H2O 1L.
