Crystalline phases in a devitrified simulated high-level waste glass containing the elements of the platinum group
1985; Elsevier BV; Volume: 136; Issue: 1 Linguagem: Inglês
10.1016/0022-3115(85)90036-4
ISSN1873-4820
AutoresHisayoshi Mitamura, Takashi Murakami, Tsunetaka Banba,
Tópico(s)Luminescence Properties of Advanced Materials
ResumoA borosilicate glass containing 20 wt% simulated high-level waste oxides was subjected to heat treatment at 700°C for 1000 h. Seven crystalline phases were newly formed by the treatment in addition to two phases, (Ru, Rh)O2 and (Pd, Rh, Te), which had already existed in the as-prepared simulated high-level waste glass. Among the new seven phases, five phases were certainly identified to be (RE)BSiO5, CeO2, SiO2, (RE)PO4 and (Sr, Ba, RE)MoO4. Of two unidentified phases, one was rich in silicon, chromium and rare earth elements (RE), and the other was rich in nickel and chromium. The crystalline phases of the elements of the platinum group facilitated the occurrence of the other phases and suppressed crystal growth.
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