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Thermomagnetic study of surface cobalt modified iron oxide particles derived from oxalic precursors

机译:草酸前体衍生的表面钴改性的氧化铁颗粒的热磁研究

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摘要

The cobalt modification of pure gamma -Fe/sub 2/O/sub 3/ acicular particles by the so-called epitaxial process has been applied to gamma -Fe/sub 2/O/sub 3/ particles, derived from oxalic precursors. Six elaboration parameters have been taken into account for the slurry heat treatment: cable content, pH, time, temperature, gas flowing into the solution, and surface activation. A thermomagnetic study including in situ annealing treatments and magnetic measurements at various temperatures in the range 20-380 degrees C has been carried out. The results are compared with those of commercial surface-cobalt-modified pigments.
机译:通过所谓的外延工艺对纯γ-Fe / sub 2 / O / sub 3 /针状颗粒的钴改性已应用于衍生自草酸前体的γ-Fe/ sub 2 / O / sub 3 /颗粒。对于浆料热处理,已经考虑了六个工艺参数:电缆含量,pH,时间,温度,流入溶液的气体和表面活化。已经进行了热磁研究,包括在20-380摄氏度范围内的各种温度下进行的原位退火处理和磁测量。将结果与市售的表面钴改性颜料进行了比较。

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