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二氧化钛纳米管可作为载体,经过磁性金属修饰,制备陶瓷基金属纳米复合材料.本文利用二氧化钛纳米管为载体,经过硅烷化改性,钯催化沉积金属镍,制备一种陶瓷基/镍纳米复合材料,并利用TEM,XRD,FTIR和XPS等方法表征该复合材料的结构特征.结果表明二氧化钛纳米管表面镍沉积均匀,镍晶粒度尺寸为9.7nm,具有衍射宽化特征.沉积镍后,纳米管端部呈开口特征,仍具有空腔结构.在外加电磁场作用下(8～12GHz),复合材料具有较高的磁导率和磁损耗,但具有很低的介电损耗.该复合材料具有长径比高、比重小、重量轻、镍含量少等特点.人们还可在二氧化钛纳米管外部沉积其他金属或合金(如铁、钴),调控复合材料的电磁性能,用于开发薄而轻的电磁活性复合材料.
Titanium dioxide nanotubes can be used as a carrier to prepare ceramic-based nanocomposites after modification with magnetic metal.In this paper, titanium dioxide nanotubes as a carrier, after silylation, palladium-catalyzed deposition of metallic nickel, a ceramic / nickel nanocomposite , And the structural characteristics of the composites were characterized by TEM, XRD, FTIR and XPS.The results show that the surface of the titanium dioxide nanotubes are uniformly deposited with the grain size of 9.7nm and the features of diffraction broadening.When nickel is deposited, The end of the tube is open and still has a cavity structure. The composite material has high permeability and magnetic loss but low dielectric loss under the applied electromagnetic field (8-12 GHz) High aspect ratio, small specific gravity, light weight, low nickel content etc. It is also possible to deposit other metals or alloys (such as iron and cobalt) on the outside of the titanium dioxide nanotubes to control the electromagnetic properties of the composites for the development of thin and light Electromagnetic activity of composite materials.