カルシウム雲母含有高強度マシナブルグラスセラミックスの合成

概要

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New machinable glass-ceramics containing fine calcium-mica were prepared by crystallizing glasses in the system Ca_xK_<(1-2x)>Mg_3 (Si_3AlO_<10>)F_2. TEM observation suggested that the host glasses were separated into two fine phases, and the precipitating crystal size decreased with increasing the potassium content. The machinability were improved with increasing the calcium content. The mechanical strength and the machinability of the glass-ceramics depended on both the amount of calcium-mica precipitated and the crystal size. Because of its high bending strength (≈300 MPa) and its hardness compatible with natural teeth, it has great potential for dental prostethic applications.
社団法人日本セラミックス協会の論文
1992-05-01