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应用单辊甩带法制备非晶态Fe78Si13B9和Fe73.5Si13.5B9Nb3Cu1薄带,并以非晶晶化退火法制备出纳米晶Fe73.5Si13.5B9Nb3Cu1薄带.利用X射线衍射(XRD)仪和示差扫描量热计(DSC)对该非晶薄带的非晶特性及其晶化过程进行了研究.并用电化学极化曲线的方法和电化学阻抗技术研究了非晶态Fe78Si13B9和纳米晶Fe73.5Si13.5B9Nb3Cu1合金在1mol/LNaOH溶液里的电化学腐蚀行为,用SEM对极化测试后的试样形貌进行了观察;同时还研究了不同的热处理温度对材料结构及在1mol/LNaOH溶液里耐腐蚀性能的影响.结果表明,该非晶薄带的晶化过程分为两步;纳米晶比非晶合金的耐腐蚀性要好;且随着热处理温度的升高,非晶和纳米晶的耐腐蚀性能都得到提高.
The amorphous Fe78Si13B9 and Fe73.5Si13.5B9Nb3Cu1 ribbons were prepared by a single roll rejection method and the nanocrystalline Fe73.5Si13.5B9Nb3Cu1 ribbons were prepared by amorphous annealing method.Using X-ray diffraction (XRD) Scanning calorimeter (DSC) was used to study the amorphous characteristics and crystallization process of the amorphous ribbons. The electrochemical polarization curves and electrochemical impedance spectroscopy were used to study the amorphous Fe78Si13B9 and nanocrystalline Fe73 .5Si13.5B9Nb3Cu1 alloy in 1 mol / L NaOH solution electrochemical corrosion behavior SEM observation of the polarization after the sample was observed; also studied the different heat treatment temperature on the material structure and in 1mol / LNaOH solution The results show that the crystallization process of the amorphous ribbon is divided into two steps; the corrosion resistance of nanocrystalline is better than that of amorphous alloy; and with the increase of the heat treatment temperature, the amorphous and nanocrystalline The corrosion resistance is improved.