Structural stability and aqueous durability of Cs incorporation into BaAl2Ti6O16 hollandite

Fang, ZhiweiSouthwest Univ Sci & Technol, Fundamental Sci Nucl Wastes & Environm Safety Lab, Mianyang 621010, Peoples R China. (författare)

QC 20220627
Hollandite ceramics are well-recognized as a promising host for immobilizing radioactive cesium. In the present paper, the [BaxCsy][(Al3+,Ti3+)(2x +y)Ti-8-2x-y(4+)]O-16 (0.4 <= x, y <= 0.8) ceramics were fabricated to in-vestigate the effect of incorporated Cs on structural stability and durability of (Ba,Cs)(Al,Ti)(8)O-16 ceramics with Cs-incorporated. It was found that the sintered samples at 1250 degrees C show a pure hollandite phase with tetragonal structure (I4/m) and high Cs retention. Moreover, the synthesized (Ba,Cs)(Al,Ti)(8)O-16 ceramics exhibit an excellent aqueous stability and the normalized Cs release rate is 2.82 (+/- 0.27) x10(-3) g m(-2) d(-1) after 28 days. All these results reveal that (Ba,Cs)(Al,Ti)(8)O-16 is a promising candidate as a Cs-waste form.

Xu, XiangxingSouthwest Univ Sci & Technol, Fundamental Sci Nucl Wastes & Environm Safety Lab, Mianyang 621010, Peoples R China. (författare)
Yang, XiaoyongKTH,Materialvetenskap,Southwest Univ Sci & Technol, Fundamental Sci Nucl Wastes & Environm Safety Lab, Mianyang 621010, Peoples R China(Swepub:kth)PI000000 (författare)
Xie, HuaSouthwest Univ Sci & Technol, Fundamental Sci Nucl Wastes & Environm Safety Lab, Mianyang 621010, Peoples R China. (författare)
Zhao, XiaoliSouthwest Univ Sci & Technol, Fundamental Sci Nucl Wastes & Environm Safety Lab, Mianyang 621010, Peoples R China. (författare)
Wang, BoSouthwest Univ Sci & Technol, Fundamental Sci Nucl Wastes & Environm Safety Lab, Mianyang 621010, Peoples R China. (författare)
Zhao, DongSouthwest Univ Sci & Technol, Fundamental Sci Nucl Wastes & Environm Safety Lab, Mianyang 621010, Peoples R China. (författare)
Yang, YushanSouthwest Univ Sci & Technol, Fundamental Sci Nucl Wastes & Environm Safety Lab, Mianyang 621010, Peoples R China. (författare)
Southwest Univ Sci & Technol, Fundamental Sci Nucl Wastes & Environm Safety Lab, Mianyang 621010, Peoples R China.Materialvetenskap (creator_code:org_t)

Ingår i:Journal of Nuclear Materials: Elsevier BV565, s. 153716-0022-31151873-4820

Av författaren/redakt...: Fang, Zhiwei; Xu, Xiangxing; Yang, Xiaoyong; Xie, Hua; Zhao, Xiaoli; Wang, Bo; visa fler...; Zhao, Dong; Yang, Yushan; visa färre...

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