| 摘要 |
Sintering and gas hot isostatic pressing are used to prepare polycrystalline yttria-gadolinia ceramic scintillator bodies. Multi-component powder compacts, formed by cold pressing cold isostatic pressing, are sintered to the closed porosity stage. The density of the sintered compacts is then increased by gas hot isostatic pressing. The finished scintillator includes Y2O3, Gd2O3, and one or more of Eu2O3, Nd2O3, Yb2O3, Dy2O3, Pr2O3, and Tb2O3 rare earth activator oxides. The finished scintillator may also include at least one of SrO and CaO as afterglow reducers.
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