PURPOSE: The titled ceramics containing SiO2, B2O3, Na2O, CaO and TiO2, capable of freely determining the combination of the reactivity of eluting ions with the thermal expansion coefficient on contact with a body fluid in the living body, and having a low melting point.
CONSTITUTION: Glass and glass ceramics, consisting of 35W60mol% SiO2, 5W 15mol% B2O3, 10W30mol% Na2O, 5W40mol% CaO, 0.5W10mol% TiO2, 0W 15mol% P2O5, 0W20mol% K2O, 0W10mol% Li2O, 0W5mol% MgO, 0W8mol% Al2O3+ZrO2+Nb2O5, 0W8mol% La2O3+Ta2O5+Y2O3 and 0W15mol% F2 as an essential composition. The composition in the range of 40W60mol% SiO2, 8W 15mol% B2O3, 15W30mol% Na2O, 8W30mol% CaO, 0W8mol% P2O5, 0.5W8mol% TiO2 and 0W15mol% F2 is particularly suitable for coating a metallic core material.
OGINO MAKOTO
KARIYA MICHIROU
ICHIMURA TAKEO
