Ion irradiation effects in the Ceramic Composite MgTiO3Er2Ti2O7.

Montaner, E. P. ; Valdez, J. A. ; Sickafus, K. E.

Technical Information Center Oak Ridge Tennessee

关键词: Ceramics;    Irradiation;    Composite materials;    Actinides;    High level radioactive wastes;   

RP-ID  :  DE2000763042

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We have developed a new ceramic-ceramic composite consisting of the mineral geikielite as a matrix phase and the mineral pyrochlore as a minor, second phase. We are investigating this material for use as a possible nuclear waste-form for the immobilization and storage of surplus actinides or high-level radioactive wastes. We performed radiation damage experiments by irradiating composite MgTiO(sub 3)-Er(sub 2)Ti(sub 2)0(sub 7)samples along with single crystals of MgTiO(sub 3) and Er(sub 2)Ti(sub 2)0(sub 7) (at a temperature of about 120K) with 350 keV Xe(sup plus plus) ions to ion fluences. Irradiated samples were analyzed using transmission electron microscopy (TEM) and nanoindentation techniques.