Formation of β-Tricalcium Phosphate Solid Solution by Simultaneity Addition of Mono and Divalent Metal Ion

Abstract

Formation of β-TOP solid solution by simultaneous addition of mono and divalent metal ion was investigated. Monovalent metal ions were added to raw materials as 2M^I = Ga+ (M^I : monovalent metal ion, :vacancy) from 0mol% to 20mol% of monovalent metal ion. Divalent metal ions were added to raw materials as M^II = Ca (M^II : divalent metal ion) from 0mol% to 20mol% of divalent metal ion. The Ca₉M^IIM^I (PO₄)₇ phase could be observed in β-TCP containing more than 9.09mol% of monovalent metal ion. The length of a-axis and c-axis changed linearly with increasing amount of monovalent metal ion up to 9.09mol%. From these results, limit of amount of mono and divalent metal ion substituted into β-TCP was 18.2mol%.