1.The application of nanometer iron oxide in ink material,

The transparent iron yellow can be used for the coating of the outside of the can, the nanometer iron oxide red ink is red-gold color, it is especially suitable for the inside of the can, and the transparent iron red can resist the high temperature of 300 ° C, is a rare pigment in ink treasures. In order to improve the printing quality of banknotes, nano-scale iron oxide pigment is often added into the printing ink to ensure the chroma and chroma of banknotes.

2.The application of nano-sized ferric oxide in ceramic materials

The ferric oxide system ceramics have been widely used for its special magnetic meta-crystalline ferrite firstly. At present, the ultrafine powder used in ferric oxide system ceramics is mostly prepared by coprecipitation method. The average particle size of ferric oxide powder prepared by this method is 40 nm ~ 60 nm, and the specific surface area is 30 m ~ 2/g ~ 60 m ~ 2/g, the gas-sensitive ceramics prepared by the method have good sensitivity. However, it is difficult to obtain atomic-scale mixing because of the different precipitation rates of the hydrolyzed reactants in the co-precipitation method, so the sintered ceramics may have some heterogeneity in microstructure, therefore, the co-precipitation method can not be used for the development of iron oxide multi-system ceramic ultrafine powder research.