【摘要】 用金相、X光、扫描电子显微镜和俄歇谱仪（AGUER）等对静电复印机用载体铁粉的氧化膜进行了微观分析和研究。结果表明:当载体铁粉氧含量为2％左右时,在其颗粒表面形成的Fe₃O₄膜层,厚度约2μm:当氧含量超过5％时,则载体铁粉中有一部分颗粒的氧化膜层显著加厚,甚至可达5—8μm,这种厚的氧化膜已不再是单一的Fe₃O₄膜,而是在Fe₃O₄膜与α—Fe基体之间出现的厚度不均匀的低价氧化铁（FeO）层。FeO的出现将降低载体铁粉的性能和使用寿命。更多还原

【Abstract】 The mcrostructure analysis and Study was made on the oxide membrane of the iron powder toner for electrostatic duplicator with optical microscope, X-ray,scanning electron microscopy and Aguer electron energy spectroscopy. The results indicated that when the oxygen content is about 2％ a ferroferric oxide membrane of about 2μm thick was formed at the particle surface of iron powder toner and when the oxygen Content of iron powder toner is more than 5％,the thickness of ferroferric oxide membrane at the surface of some iron Powder particles will apparently thicken even if the thickness can increase to 5-8μm. However,it is not a single ferroferric oxide membrane, the ferrous oxide the thickness of which is not homogneous,isformed between the ferroferric oxide membrane and the α-Fe matrix. The presence of FeO will decrease the properties and the service life of the iron powder toner.更多还原