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一前言透射电镜已日益普遍地应用于材料的研究工作。曲于电子束对金属样品的穿透能力较小,因此制备薄膜样品就成为透射电镜分析的一个关键问题。电解减薄是制备透射电镜金属薄膜最常用的方法。双喷电解减薄器是其最主要的一种装置。根据我们多年来制备金属薄膜的经验,并吸取了国内外同类装置的优点,研制出一种结构新颖、穿孔报警灵敏、控制准确、减薄区域大的磁力驱动双喷电解减薄器。本文主要介绍这种装置的构造原理、特点、及其效果。二对一般双喷电解减薄器的评价目前国际上最常用的双喷电解减薄器的构造如图1所示。其主要特点是:电解液由喷咀射向样品薄片进行抛光减薄。减薄控制是利用一根光导管把照明光源传送到样品薄片的一侧,当薄片抛光穿孔时,装在另一侧的一根光导管将接收到光信号,然后经光敏元件转换成电信号,放大后推动继电器和讯响器,自动地切断抛光电源和耐酸泵马达电源,讯响器发出穿孔报警响声。相对其它电解抛光装置来说,此装置操作比较方便,因此受到材料科学工作者的欢迎。
A preface Transmission electron microscopy has been increasingly used in the research of materials. The electron beam on the metal sample penetration is small, so the preparation of thin film samples become a transmission electron microscopy analysis of a key issue. Electrolytic thinning is the most commonly used method for the preparation of TEM films. Double jet thinning device is its most important kind of device. According to our experience in preparing metal thin film for many years and drawing on the advantages of similar devices at home and abroad, we have developed a magnetically driven double jet electrolytic thinner with novel structure, sensitive perforation alarm, accurate control and large area of thinning. This article describes the construction of this device principle, characteristics, and its effect. Two pairs of general double-jet electrolytic thinner evaluation Currently the most commonly used double-jet electrolytic thinner structure shown in Figure 1. Its main features are: Electrolyte spray nozzle from the sample sheet for polishing thinning. Thinning control is the use of a light pipe to the illumination light source to the side of the sample sheet, when the sheet polishing perforation, mounted on the other side of a light pipe will receive the optical signal, and then converted to electrical signals by photosensitive elements , After amplification to promote the relay and sounder, automatically cut off the power and acid pump motor power supply, sounder piercing alarm sound. Compared with other electrolytic polishing devices, this device is more convenient to operate and therefore welcomed by material scientists.