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 Posted: Mon 0:34, 20 Dec 2010 Post subject: air jordans Zinc deformation twins sample preparat |
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Zinc sample preparation of deformation twins
2.5M diamond polishing paste, polishing machine in P_2-type polishing. Polishing sandpaper with water left over from the early scratches along the vertical direction. Pay attention to maintaining the humidity flannel, velvet oxidation appears too dry, while polishing paste in the oil will form a black film on the sample surface affects the quality of {polishing times, use a small amount of polishing paste, sandpaper until the water left over from scratch with the naked eye not observed,[link widoczny dla zalogowanych], then the sample rotation 9O. To continue polishing lmin. Moderate force during polishing, the sample should not be too stable as far as possible the direction of rotation to avoid the multi-directional micro-scratches. Polished sample of nitric acid alcohol with 4 light gray eroded to the surface, under a microscope,[link widoczny dla zalogowanych], the morphology shown in Figure 1. After 1000 the water sandpaper grinding, the sample in addition to surface scratches, there 15Fm about damage layer, such as scratches to eliminate over-Cheng Zongbin:} variable speech samples Pina Ulrich crushing grains prepared Figure 1 Image IOOX, the sample surface will remove the 5m or so,[link widoczny dla zalogowanych], but the organization still in the deformation layer, so the organization is displayed showing the grain crushing grain in order to obtain complete, the sample surface must be shuffled around to 15, um so. Operation in two steps: first, the use of 2.5M polishing paste, polishing force strong purpose is to remove the damage layer caused by sandpaper. The second step, using 1M of polishing paste, polishing hard to light, the purpose is to remove or reduce the deformation caused by polishing. In the second step should be kept in the erosion of the polishing process, observation, along with the elimination of crushing the grain, the real organization was hesitate to gradually (Figure 2),[link widoczny dla zalogowanych], after the end of the final polishing, the erosion was observed, the results shown in Figure 3. After the success of sample preparation. In the course of subsequent oxidation or scratches If there is time. Can only be polished, polishing force appropriate lighter. Figure 2 organizations began to appear when the real effect of 100 × 3 Conclusion Figure 3, the effect of the final polishing IOOX zinc hexagonal crystal structure is a relatively soft metal, water, sanded in the process, the composition of broken grains the surface deformation layer. Deformation in the 9O, its thickness is about 15m. Removal of 2 ~ 3m polishing, the surface is smooth although the obtained mirror, but the milk and then in the deformed layer,[link widoczny dla zalogowanych], indicating the organization was crushing the grain. In order to obtain a complete grain, should continue to be shuffled around 15m or so, then the full grain can be obtained, while there are some grains of mechanical twins. In view of this, the conditions can be the first diamond polishing paste using 7M rough polishing, the surface of the rapid removal of crushing grain, and then use IM to 25M, and gradually fine polishing diamond polishing paste to get the grain intact and with mechanical twins The polycrystalline zinc organization. References: [1] \Color metallography technique []. Beijing National Defence Industry Press, 1987. [Ju Shen Guiqin. Optical microscopy techniques [M]. Beijing: Beihang University Press, 1992. [3] Lu Guangxi, Hou Zengshou. A Course in metal [M]. Shanghai Science and Technology on the book meters Press, 1985. [4] Yao Hung years. Metallographic methods [M]. Beijing: Mechanical Industry Press, l983. [5] Gu turn the United States, a pure zinc metal sample preparation methods [J], physical and chemical testing of a physical volumes, 1997,33 (12): 13. Subscribe 2002 \Academic Committee Co-national public offering journals, National Metallurgical excellent journal, Journal of Sichuan excellent. \experience in environmental protection and energy saving results, \School of experts and scholars to read. Domestic Issue Code 62-195. Bimonthly pricing 6O0 dollars per copy, the year 36. . 0. Address: Chengdu, Sichuan Province bull mouth, Panzhihua Iron and Steel Walled turn Chengdu Seamless Steel Tube Co., the company, \s0cn \
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