Abstract
The purpose of this study was to obtain a basic information on the activation of melt-spray materials using a natural electrode potential measuring method.
Body fluid is a sort of electrolytic solution with pH always kept at 7.4. However, its pH level is adapt to change in a range from 5 to 7.8 due to several causes.
Therefore, activation and adhesion of porous surface were investigated by monitoring changes of sprayed porous films using sample solutions of different pHs.
The experimental results revealed that aluminum with high corrosivity was most compatible with living tissues, whereas a high corrosion resistant nickel porous was incompatible with the living tissues. Implants coated with melt-sprayed film porous containing a high proportion of nickel were discharged from the body within one month.
It was also found that a certain composition of nickel alloys can improve the affinity of implant significantly.
