Formations of Apatite Layer on Silicon Single Crystal

Effect of Ion Concentrations in Aqueous Solution

Abstract

A silicon single crystal forms a silica gel layer on its surface, when it is soaked in aqueous solutions with pH ranged from 7 to 8. Thus formed silica gel induces apatite formation in aqueous solutions with a higher ionic activity product of the apatite as compared to a simulated body fluid with ion concentrations nearly equal to those of human blood plasma.