中文摘要：

采用溶胶-凝胶结合水热法制备了钐掺杂二氧化钛(Sm-TiO2)纳米固体颗粒,并通过XRD,TEM等对Sm-TiO2进行了表征。结果表明,Sm3+的掺入保留了TiO2原有的锐钛矿晶型且没有其他新的晶型结构出现,其颗粒大小约为8~13 nm。将Sm-TiO2均匀分散在甲基硅油中形成纳米电流变液(n-ERF),并通过旋转流变仪测试了该n-ERF的动态电流变响应。结果发现,通过氯仿作为媒介而形成的n-ERF的具有优异的抗沉降稳定性;n-ERF具有显著的动态电流变响应,随着电场强度的增大,n-ERF的动态模量随之增加,且其线性平台区也随之变长,表现出典型的类固态响应行为,极化效应解释了产生这种现象的原因所在;当Sm3+掺杂浓度为0.05时,n-ERF表现出最优异的动态电流变性能。

英文摘要：

Sm3+ doped titanium dioxide nanoparticles(Sm-TiO2) were prepared by sol-gel combined hydrothermal method.And the Sm-TiO2 particles were characterized by X-ray diffraction(XRD) and transmission electron microscopy(TEM).The results showed that the incorporation of Sm3+ did preserve the anatase crystal form of TiO2,and there was no other crystal type.The size of the Sm-TiO2 nanoparticles was about 8~13 nm.The nano-electrorheological fluid(n-ERF) was a kind of suspension system with Sm-TiO2 particles dispersed ...