CAJ | 학술논문

采用磁控溅射技术沉积制铝/贫铀/铝(Al/DU/Al)、金/贫铀/金(Au/DU/Au)“三明治”薄膜样品.利用高分辨扫描电镜、X射线衍射仪、X射线光电子能谱仪、扫描俄歇微探针对Al/DU/Al, Au/DU/Au样品的Al/DU, Au/DU界面行为进行表征与研究.结果表明:沉积态DU层以柱状晶生长;Al/DU界面扩散明显,物理扩散过程中伴随着Al, DU化学反应形成Al2U, Al3U金属化合物;金属化合物的形成导致界面处Al 2p电子结合能向高能端移动, U 4f电子向低能端移动;微量O在Al/DU界面处以Al2O3及铀氧化物形式存在;DU镀层中以铀氧化形式存在;沉积态的Au/DU界面扩散为简单的物理扩散,团簇效应导致Au/DU界面处Al 2p, U 4f电子结合能均向高能端移动;在Au/DU界面及DU镀层中,微量O以铀氧化物形式存在;Al/DU界面扩散强于Au/DU;相同厚度的Al, Au保护镀层, Al镀层保护效果优于Au镀层.
채용자공천사기술침적제려/빈유/려(Al/DU/Al)、금/빈유/금(Au/DU/Au)“삼명치”박막양품.이용고분변소묘전경、X사선연사의、X사선광전자능보의、소묘아헐미탐침대Al/DU/Al, Au/DU/Au양품적Al/DU, Au/DU계면행위진행표정여연구.결과표명:침적태DU층이주상정생장;Al/DU계면확산명현,물리확산과정중반수착Al, DU화학반응형성Al2U, Al3U금속화합물;금속화합물적형성도치계면처Al 2p전자결합능향고능단이동, U 4f전자향저능단이동;미량O재Al/DU계면처이Al2O3급유양화물형식존재;DU도층중이유양화형식존재;침적태적Au/DU계면확산위간단적물리확산,단족효응도치Au/DU계면처Al 2p, U 4f전자결합능균향고능단이동;재Au/DU계면급DU도층중,미량O이유양화물형식존재;Al/DU계면확산강우Au/DU;상동후도적Al, Au보호도층, Al도층보호효과우우Au도층.
@@@@Aluminum/depleted uranium/aluminum (Al/DU/Al) and gold/depleted uranium/gold (Au/DU/Au)“sandwich structure”films are deposited by magnetron sputtering. Diffusions of Al/DU and Au/DU interface of these samples are investigated by high resolution scanning electronic microscope, X-ray diffraction, X-ray photoelectron spectrometer and scanning auger microprobe. The results show that deposited DU layer is of columnar grain. Significant diffusion takes place at Al/DU interface. Intermetallic compounds of Al2U and Al3U are formed at Al/DU interface by chemical reaction between Al and DU which induces chemical shift toward high binding energy of Al 2p and toward low binding energy of U 4f. Microdosages of O exist in Al over-layers as Al2O3, in Al/DU interface as Al2O3 and oxidation of uranium, and in DU layers as oxidation of uranium respectively. Just simple physical diffusion takes place at Au/DU interface. Binding energies of Au 4f and U 4f shift toward high-energy tail induced by cluster effect at the Au/DU interface. Microdosages of O exist at Au/DU interface and in DU layers as oxidation of uranium. Diffusion at the Al/DU interface is more obvious than at Au/DU surface. Under the condition of the same thickness valuses Al over-layer is more effective than Au over layer to protect uranium layer from oxidging.