Immobilization of simulated An3+ into synthetic Gd2Zr2O7 ceramic by SPS without occupation or valence design. Issue 5 (1st March 2021)

• Record Type: Journal Article
• Authors: Luo, Fen; Tang, Hexi; Shu, Xiaoyan; Chen, Zhi; Xu, Chen; Wei, Guilin; Wu, Dong; Chen, Shunzhang; Zhang, Haibin; Xie, Yi; Huang, Wenxiao; Wang, Lan; Lu, Xirui
• Is Part Of: Ceramics international. Volume 47:Issue 5(2021)
• Page Start: 6329
• Page End: 6335
• Publication Date: 2021-03-01
• Subjects: SPS -- Gd2Zr2O7 ceramic -- Simulated An3+ -- Solubility; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.10.211
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: To simplify the immobilized process of nuclear waste, synthetic Gd2 Zr2 O7 ceramic was employed to immobilize simulated An 3+ (Nd 3+ ) by spark plasma sintering (SPS) without any ion occupation or valence design. Sintering and characterization of immobilized simulated An 3+ with various doping amounts were carried out. The effects of Nd2 O3 content on the phase composition, active modes, micro-graph and density of the sintered ceramics were investigated. When the Nd2 O3 doped amount reached up to 50 mol%, the raw peak of Nd2 O3 existed. The sintered ceramics kept a single fluorite phase when Nd2 O3 solubility achieved to 40 mol%. The sintered ceramics presented a well crystalline phase and the elements distributed evenly. In addition, as the Nd2 O3 doped amount increase, the density and Vickers hardness values of Nd2 O3 doped sample decrease.