Single-walled carbon nanotube-derived novel structural material
Single-walled carbon nanotube-derived novel structural material
复制标题
DOI：
10.1557/jmr.2006.0186
复制
发表时间：
2006-06
影响因子：
2.7
通讯作者：
G. Yamamoto;Y. Sato;Toru Takahashi;M. Omori;T. Hashida;A. Okubo;K. Tohji
中科院分区：
文献类型：
--
作者：
G. Yamamoto;Y. Sato;Toru Takahashi;M. Omori;T. Hashida;A. Okubo;K. Tohji
通过对纯化的 SWCNT 进行放电等离子体烧结 (SPS) 制备无粘合剂宏观单壁碳纳米管 (SWCNT) 固体。研究了加工温度和压力对单壁碳纳米管固体机械性能的影响以及单壁碳纳米管固体中单壁碳纳米管的结构变化。对单壁碳纳米管固体的透射电子显微镜观察表明，高温处理已将部分单壁碳纳米管转变为非晶态结构，而其余的单壁碳纳米管仍然埋藏在上述结构中。 SWCNT固体的机械性能随着加工温度的升高而提高，这可能反映了SPS过程中产生的火花等离子体导致SWCNT之间的界面强度和碳的无序结构的提高。
Binder-free macroscopic single-walled carbon nanotube (SWCNT) solids were prepared by spark plasma sintering (SPS) of purified SWCNTs. The effects of processing temperatures and pressures on the mechanical properties of the SWCNT solids and structural change of SWCNTs in the SWCNT solids were investigated. Transmission electron microscope observation of the SWCNT solids revealed thatthe high-temperature treatment has transformed some part of the SWCNTs into amorphous-like structure and the rest of the SWCNTs remained buried into the above structure. The mechanical properties of the SWCNT solids increased with the increasing processing temperature, probably reflecting the improvement of interfacial strength between SWCNTs and disordered structure of carbon due to the spark plasma generated in the SPS process.