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在理论计算铁粉含量与绝热温度关系的基础上 ,考察了以自蔓延高温合成方法 (SHS)制备Ni -Zn铁氧体粉体过程中 ,铁粉含量对燃烧温度、燃烧波传播速度以及产物微观结构的影响 ,确定了以SHS合成Ni-Zn铁氧体粉体所需的最佳铁粉含量值 .结果表明 :铁粉含量越高 ,燃烧温度愈高 ,燃烧波传播速度愈快 ,产物转化得越完全 ,但燃烧温度过高会使产物中出现大量液相 ,产物已不能用于成型和烧结 .当铁粉含量在k=0 .5时 ,可以得到较为理想的产物
Based on the theoretical calculation of the relationship between the iron content and the adiabatic temperature, the effects of iron content on the combustion temperature, the propagation velocity of the combustion wave and the products of the products were investigated in the process of preparing Ni-Zn ferrite powders by the self-propagating high temperature synthesis method (SHS) The results show that the higher the iron content is, the higher the combustion temperature is, the faster the propagation velocity of the combustion wave is and the higher the iron content in the product is The more complete conversion, but the combustion temperature is too high will produce a lot of liquid products, the product can not be used for forming and sintering.When the iron content at k = 0.5, you can get the ideal product