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The mechanism of the additives on the permanent magnetic ferrite magnetic analysis

by:Newland     2020-04-27
The mechanism of the additives on the permanent magnetic ferrite magnetic analysis to join additive can sample a variety of magnetic nanomaterials are higher than add additive of a micron material samples. Especially the coercive force of the sample, by adding nano material additive samples of coercive force than the average 10% higher than that of adding micron additive. This is due to the small particles of nanometer additive, on the premise of the same quality, its specific surface area is thousands of times of that of micrometers, in adding nanometer magnetic materials powder additives, additives nanoparticles and magnetic materials of powder particles contact area is larger than the corresponding micron additive, magnet materials in addition to the granularity of different additives, main phase composition of the grain size is the same, so can only think that the cause of different sintering temperature is caused by the granularity of different additive material. Under the condition of equal quality, specific surface area of nanomaterials is micron material hundreds or even thousands of times, nanocrystalline high diffusion coefficient, diffusion distance is very short, so in joined the nanometer additive samples, nanoparticles, and the main phase materials ( Ferrite under-burnt clinker powder) Increase in the number of the contact interface between the interface of solid phase reaction, which is formed by the atomic diffusion on the interface of new phase, the solid phase reaction at low temperature. Thus it can be seen that under the condition of equal quality, additives, the granularity of the xiaoyue is conducive to the sintering and improve the magnetic ferrite materials. Optimization with CaCO, the SiO in strontium ferrite in the sintering process, there are the following response: CaCO3 + f (SiO2 = CaSiO3 + CO2 1) SrFe12Ol9+CaSiO3=SrSiO3+CaFe12O19( 2) Magnetic liquid ( 磁性流体) Also called magnetic fluid ( 磁性液体) Or the ferromagnetic fluid ( 铁磁流体) 。 It is a liquid, as the name implies, magnetic magnetic materials. Both have solid magnetic liquid and liquid. It is by the particle size of nanometer size ( Several to dozens of nanometer) The magnetic particles, with the help of the surfactants evenly dispersed, suspended in a fluid ( Base plus surfactants) In the form of a kind of colloid mixture of solid liquid two phase, the material even in the gravity, centrifugal force, powerful magnets. Under the action of electromagnetic force is also not happen solid-liquid separation, is a kind of typical nanocomposites. Magnet company is the specialized production ( Ndfeb) Powerful magnet company, has factories in dongguan city based wangniudun pier town. Magnet products used in toys, jewelry, crafts gifts, handmade gift box, leather handbags invisible magnetic button, plastic hardware products, audio equipment and other industries. Our company is located in dongguan city based wangniudun block cao beijiao town five chung village industrial zone, the company can provide customers 24 hours delivery, 36 hours to the customers specifications template. Magnet experts to find and package your satisfaction, more magnets can view our company website WWW information. yirongciye。 com/。 This article rigorous reproduced, if there are any violation, the consequence is proud! Site does not arrange the position, everything is equal to zero technical support: all network company address: China guangdong dongguan dongguan city based wangniudun town pier five chung industrial zone telephone: 0769 - 81313183 guangdong ICP for 16113157 magnets, magnet, profiled magnets, magnet manufacturers,
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