Sr-containing ceramic products produced from geopolymer, (Na, Sr)-GP, have been reported as excellent candidate materials for the immobilization of radionuclide 90Sr, despite sintering temperature at 1200°C. In this work, the product possessing the best immobilization performance (leaching rate of 1.29% for Sr²⁺) can be produced at 1000°C in the method of liquid-phase sintering via the addition of fluxing agent B₂O₃ at 2.0 wt% in the geopolymer precursor. The mechanical properties of the geopolymer precursor (Na, Sr)-GP were also enhanced via the promotion role of B₂O₃ to geopolymerization. It was revealed that the overall anti-leaching ability of the Sr-containing ceramic product not only depends on the microstructure of the loading substrate but also can be affected by the chemical state of radioactive strontium retention in the loading matrix.

中文翻译：

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B2O3改性地质聚合物及其用于固载锶的液相烧结产物

尽管烧结温度为 1200°C，但据报道，由地质聚合物 (Na, Sr)-GP 生产的含 Sr 陶瓷产品是用于固定放射性核素 90Sr 的优秀候选材料。在这项工作中，通过添加2.0 wt的助熔剂B ₂ O ₃ ，可以在1000°C的液相烧结方法中生产具有最佳固定性能的产品（Sr ²⁺的浸出率为1.29％）地质聚合物前体中的 %。_{B 2} O ₃的促进作用也提高了地质聚合物前体(Na, Sr)-GP的力学性能到地质聚合。结果表明，含锶陶瓷产品的整体抗浸出能力不仅取决于负载基体的微观结构，还可能受到负载基体中放射性锶保留的化学状态的影响。