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本文以NiO和Fe2O3为主要原料,采用机械化合-两步烧结法制备NiFe2O4基金属陶瓷试样。研究了球磨时间、助磨剂含量、球磨转速对制备前驱体粒度的影响,并利用X射线衍射和扫描电子显微镜等进行表征。结果表明,球磨参数越好,粉体颗粒越细,提高冷等静压压坯的致密度、降低试样烧结温度,最终提高惰性阳极试样密度,改善试样的导电性和抗腐蚀性等性能并达到保护环境、节约能源的效果。本实验制备惰性阳极球磨阶段最佳球磨条件为:助磨剂含量150ml、球磨时间6h、球磨转速300r/min,此条件下制得了体积密度为5.68g/ml的阳极试样。
In this paper, NiO and Fe2O3 as the main raw materials, the use of mechanical compaction - two-step sintering NiFe2O4-based cermet samples. The effects of milling time, grinding aid content and milling speed on the particle size of the prepared precursor were investigated. X-ray diffraction and scanning electron microscopy were used to characterize the particle size. The results show that the better the milling parameters, the finer the powder particles, the higher the density of the cold isostatic compaction, the lower the sintering temperature of the sample, and finally the density of the inert anode sample is improved, the conductivity and corrosion resistance of the sample are improved Performance and to protect the environment, save energy results. In this experiment, the optimum conditions of ball milling for inert anode ball milling were as follows: grinding aid content 150ml, ball milling time 6h, milling speed 300r / min. Under this condition, anodic samples with a bulk density of 5.68g / ml were obtained.