Both Y₂Ti₂O₇ and Gd₂Ti₂O₇ pyrochlore glass-ceramics (GCs) have been prepared with an oxide route and consolidated via hot isostatic pressing (HIPing) as waste forms for actinide immobilization. The crystallization of Y₂Ti₂O₇/Gd₂Ti₂O₇ pyrochlore as the major actinide host phase in the residue glass has been confirmed with XRD, SEM-EDS and Raman spectroscopy. The static leaching tests confirmed that both GCs are chemically durable with normalized Y/Gd and Ti leach rates ~10^-4―10^-5 g m^-2 d^-1 after 28 days. In addition, the interactions between the 316L stainless steel (SS) HIP-can and the GCs have been investigated. Interactions occur at the interface with a layer of mixed Cr/Ti oxide and CrTi₂O₅ crystals observed for the Y₂Ti₂O₇ GC and a layer (~10 µm) of Cr₂O₃ observed for the Gd₂Ti₂O₇ GC as the reaction fronts from the SS cans. Furthermore, a layer (~10 µm) of Gd-(Si/Ti)-oxide phase formed on the GC side of the interface.

Y ₂ Ti ₂ O ₇和Gd ₂ Ti ₂ O ₇烧绿石玻璃陶瓷（GCs）均已通过氧化物路线制备，并通过热等静压（HIPing）固结为废物形式，用于固定act系元素。用XRD，SEM-EDS和拉曼光谱法已经证实了Y ₂ Ti ₂ O ₇ / Gd ₂ Ti ₂ O ₇烧绿石作为残留玻璃中主要的act系元素主体相的结晶。静态浸出测试证实，两种气相色谱仪均具有化学耐久性，且Y / Gd和Ti的浸出率均达到〜10 ^-4 ―10 ^-5gm ^-2 d ^-1在28天后。此外，还研究了316L不锈钢（SS）HIP-can和GC之间的相互作用。在Y ₂ Ti ₂ O ₇ GC观察到的混合Cr / Ti氧化物和CrTi ₂ O ₅晶体层与在Gd ₂ Ti ₂观察到的Cr ₂ O ₃层（〜10 µm）之间发生相互作用。O ₇ GC作为SS罐的反应前沿。此外，在界面的GC侧形成了一层（约10 µm）Gd-（Si / Ti）-氧化物相。