CAJ | 학술논문

在室温下用70 keV质子束多壁碳纳米管(MwCNTs),研究了多壁碳纳米管从石墨结构向无定形结构的转变过程.轰击后,MWCNTs外围的石墨结构变成均匀的无定形结构包覆着内部的石墨结构.增大照射量,这种无定形化的过程继续向MWCNTs内层推进,直至形成一个中空的无定形纳米线结构.质子束轰击引入的MWCNTs的结构转变,是从外层向内层逐步推进的石墨结构向无定形结构的转变过程.本文对这种结构演化的机理进行了讨论.
재실온하용70 keV질자속다벽탄납미관(MwCNTs),연구료다벽탄납미관종석묵결구향무정형결구적전변과정.굉격후,MWCNTs외위적석묵결구변성균균적무정형결구포복착내부적석묵결구.증대조사량,저충무정형화적과정계속향MWCNTs내층추진,직지형성일개중공적무정형납미선결구.질자속굉격인입적MWCNTs적결구전변,시종외층향내층축보추진적석묵결구향무정형결구적전변과정.본문대저충결구연화적궤리진행료토론.
Amorphous structure transformation of multiwalled carbon nanotubes (MWCNTs) irradiated by 70 keV protons at room temperature was investigated. It was found that some of the proton-irradiated MWCNTs were covered with homogeneous amorphous structure with the inner tube walls in graphite structure. Moreover, the amorphous structure continuously proceeds and the graphite structure was reduced during the proton irradiation until the irradiated MWCNTs become amorphous nanowires with a hollow structure. The proton-induced structural transformation of MWCNTs was a unique graphite-to-amorphous structural transition from the outer walls to the inner walls of the irradiated MWCNTs. The structural evolutionary mechanism of proton-beam-irradiated MWCNTs has been discussed.