高能球磨法制备铁与聚四氟乙烯纳米复合材料

该文介绍了用高能球磨法制备铁与聚四氟乙烯纳米复合材料，研究预磨聚四氟乙烯的时间对所制备纳米复合材料组分的影响。材料的组分采用穆斯堡尔谱学方法研究分析，穆斯堡尔谱结果表明有界面谱登加在原来的，Fe谱上，这说明a-Fe的颗粒已达到纳米级，除此之外还有Fe²⁺和Fe³⁺的子谱，分别对应于FeF₂和FeF₃，随着球磨时间的延长，界面谱消失，出现物相Fe₃C实验结果还表明预磨聚四氟乙烯有利于FeF₃的产生。

Fe/ PZFE Nanometer Composites by High Energy Ball Milling

Fe/PTFE nanometer compound was prepared by high energy ball milling. Firstly, PTFE was milled for 50h,90h,120h ,then Fe/ PTFE mixture was milled for 700h. The components were indentified by ⁵⁷Fe Mossbauer spectroscopy. The Mossbauer effect studies show that the spectrum includes not only bothsextets of bulk and interface of a-Fe ,it indicates the size of particle Fe is in the order of nanometer, but also one singlet for Fe³⁺, one doublet for Fe²⁺ , they corresponds to FeF_² and FeF_³ respectively. As milling time increases，the component of interface of a-Fe disappears, meantime, the Fe₃C appears. The result shows that it is helpful to produce FeF_³ as PTFE was initially milled.