Study on preparation of nano-sized carbon/ ferroferric oxide composite material 碳/四氧化三铁纳米复合材料合成研究
The surface defect appeared mainly as air bubbles and ferroferric oxide drops which centred around the lower outer-field portion of the stoneware cup. 表观缺陷主要表现为釉泡和氧化铁颗粒,且其集中于杯体下部外侧面。
The key points for selective decomposition of zinc ferrite is to restrain the over reduction of zinc oxide and ferroferric oxide and the formation of zinc iron solid solution. 铁酸锌还原过程物相调控的关键在于抑制四氧化三铁和氧化锌的还原以及铁锌固溶体的生成。
Nanometer ferroferric oxide has unique magnetic characteristics, and it can be availably used for magnetic memory materials, microwave absorbing materials, special coating, targeted drug delivery, multifunctional composite materials, catalysts, and biotechnology. 纳米Fe304材料具有优良的磁学特征,使其在磁存储材料、微波吸收、特种涂料、药物靶向引导、多功能复合材料、催化剂及生物工程等方面有重要的应用。
Decomposing zinc ferrite to zinc oxide and ferroferric oxide selectively under reduction atmosphere was proposed, and acid leaching and magnetic separation processes were carried out to separate zinc and iron from reduced zinc calcine according to their characteristic difference. 本研究拟在弱还原气氛下将锌焙砂中的铁酸锌选择性分解为氧化锌及四氧化三铁,依据二者理化性质的差异,采用弱酸浸出-磁选组合工艺实现铁锌的分离。
Ferroferric oxide was coated with silica by sol-gel method, and doped with dithizone. The modified nanoparticles were characterized by SEM, FT-IR and VSM. 合成了四氧化三铁颗粒,通过溶胶凝胶的方法负载二氧化硅涂层,同时进行双硫腙的掺杂,得到双硫腙修饰磁性纳米材料。