JunhHua WU
材料科学技术（英文）
Microwave dielectric measurements over the broad bandwith of 10 MHz to 20 GHz were conducted on composites comprising bundles of single-walled carbon nanotubes (SWNT) embedded in an epoxy matrix, in comparison to the nano-graphite and MWNT. It is found that both relative real and imaginary permittiv...
关键词:
Single-walled carbon nanotube
,
carbon
,
nanotube
,
Dielectric
Peng QI
,
Jinfeng WANG
,
Baoquan MING
,
Juan DU
,
Xinghua LIANG
,
Limei ZHENG
材料科学技术（英文）
Lead-free piezoelectric ceramics (Na0.5K0.5-xLix)NbO3 (x=0.057–0.066) were synthesized by an ordinary sintering technique. Substituting Li for K can lead to structural distortion, which improves the Curie temperature (TC) greatly. By adding appropriate LiNbO3 content, piezoelectric constant d33 valu...
关键词:
Lead-free
,
null
,
null
,
null
Azizah Shaaban
,
Sian-Meng Se
,
Imran Mohd Ibrahim
,
Qumrul Ahsan
新型炭材料
doi:10.1016/S1872-5805(15)60182-2
采用 ZnCl2对橡胶木屑进行化学活化制备出活性炭。 ZnCl2与橡胶木屑的浸渍质量比为1.0-2.0,活化温度为500℃,时间为60 min。通过扫描电镜、X射线衍射和BET比表面分析仪探讨浸渍比例对活性炭孔结构的影响。结果表明,当浸渍比为1.5：1时,样品的比表面积和孔径分别为1301 m2/g...
关键词:
橡胶木屑
,
化学活化
,
活性炭
,
微波吸收材料
,
介电常数
,
回波损耗
