The thin strips of Fe(Co)⁃Hf⁃B⁃Cu iron⁃based strip amorphous alloys were prepared by single⁃roller⁃quenching method. The amorphous structure was determined by XRD, Mössbauer spectroscopy and transmission electron microscopy. The thermal stability of different samples was tested by differential scanning calorimetry. The results indicate the glassy structure of all the samples. Furthermore the results indicate that the thermal stability of amorphous alloys can be increased by faster cooling rate or adding pure B elements. And it can be also identified to improve the thermal stability of amorphous alloys that alloying components with the appropriate amount of Co.

A method for measuring the refractivity of saturated alcohol gas in high precision in closed vessel had been designed. This experimental apparatus used an interference method to observe the variation of interference fringes when the gas pressure changed, combining with the relationship of the number of the changing interference fringes and the refractivity of saturated alcohol gas, then the refractivity of alcohol gas under a certain pressure could be measured. The results showed that this method was accurate in deduce, simple in measurement and method, and reliable. This method could be promoted to measure the refractivity of gas. Especially, it also could be used to measure the liquid level of the liquid-storage tanks.