Kr离子辐照磷灰石陶瓷材料Ca10(PO4)6FxCl2-x(x=0,0.5,1.0,1.5和2.0)导致的非晶相变

(PO4)6FxCl2-x(x=0,0.5,1.0,1.5和2.0)导致的非晶相变] 董晓囡,张 建*,郭奇勋,焦绪丽,林绍辰,李 宁 (厦门大学能源学院,福建 厦门 361102)

六方结构磷灰石; 离子辐照; 非晶转变

Amorphization of Ca10(PO4)6FxCl2-x(x=0,0.5,1.0,1.5,2.0)Apatite Ceramics Caused by Kr Ion Irradiation
DONG Xiaonan,ZHANG Jian*,GUO Qixun,JIAO Xuli,LIN Shaochen,LI Ning

(College of Energy,Xiamen University,Xiamen 361102,China)

hexagonal apatite; ion irradiation; amorphous transition

DOI: 10.6043/j.issn.0438-0479.201702023

备注

采用传统的陶瓷烧结工艺制备了六方结构的多晶磷灰石陶瓷材料Ca10(PO4)6FxCl2-x(x=0,0.5,1.0,1.5和2.0),并通过常规X射线衍射(X-ray diffraction,XRD)确认其为单一相.然后,用800 keV Kr2+在室温下辐照各磷灰石样品,辐照后的样品利用掠入射X射线衍射(grazing incidence X-ray diffraction,GIXRD)对其表面辐照损伤层结构进行表征.结果表明,当用Kr2+对该系列磷灰石样品进行辐照时,所有样品都会发生从晶体到非晶体结构的转变,但同种辐照剂量下,该系列磷灰石样品中含F比例越高,Kr2+辐照导致的非晶含量就越小,其抗辐照非晶转变能力越强.

A series of hexagonal polycrystalline apatite ceramics Ca10(PO4)6FxCl2-x(x=0,0.5,1.0,1.5,2.0)were synthesized by a conventional ceramic process, and the single-phase was confirmed by normal X-ray diffraction(XRD).Then,the apatite samples were irradiated with 800 keV Kr2+ at room temperature.The irradiated samples were characterized using grazing incidence X-ray diffraction(GIXRD).Crystalline-to-amorphous transition was observed in these apatite samples under 800 keV Kr2+ ion irradiation.However,it was found that the apatite sample with higher F proportion had smaller amorphous fraction with the same irradiation dose based on a series of irradiation experiments.Namely,the apatite with higher F proportion would have stronger ability to resist amorphization of Ca10(PO4)6FxCl2-x.