Fluorapatite-based glass-ceramics (GCs) have been prepared by a two-step hot-pressing (HP) sintering as novel nuclear wasteforms for incorporating fluoride-based salt waste. Other sets of GCs were also prepared by the solid-state (SS) method for comparison. The crystallization of fluorapatite (Ca \(_{9}\) Sr(PO \(_{4}\) ) \(_{6}\) F \(_{2}\) ) as the main host phase within the borosilicate glasses was identified by x-ray diffraction (XRD) and scanning electron microscopy (SEM). SEM analysis shows the glass-ceramics prepared by HP sintering exhibit a relatively denser microstructure compared with GCs prepared by SS method, and energy dispersive spectroscopy (EDS) confirms that the salt waste is mainly incorporated into the ceramic phase. In addition, the product consistency tests (PCT) confirm that the HP samples are chemically durable with relatively lower normalized Sr, Si and Ca leach rates \(\sim\) 10 \(^{-4}\) –10 \(^{-3}\) g/m \(^{3}\) , indicating that HP GCs exhibit higher chemical durability than SS GCs.
