Total Thermal Expansion Coefficients of the Yttrium Silicate Apatite Phase Y_(4.69)(SiO_4)_3O

摘要

The formation of the Y_(4.69)(SiO_4)_3O apatite phase was observed in compositions targeted at the yttrium monosilicate and disili-cate phases. Through the use of high-temperature in situ X-ray diffraction, the lattice parameters of the phase were characterized as a function of temperature, and thermal expansion coefficients were calculated. Phase fractions were assessed as a function of sintering temperature, and the apatite phase fraction increased with temperature.