Příprava z tenká řez vzorky pro polarizace mikroskopie
1. Vzorek výběr
Select a vhodný vzorek podle to potřeby, a určovat část že měl měl být uzemnit.
2. řezání
Podle k charakteristiky z materiálu, výběr vnitřní kruh nebo vnější kruh kráječ. Obecně, když krájení slicing s s an external circular slicer, it should be cut in strict accordance with the prescribed method. The size should not be too large or too small. It depends on the specific size of the material provided , general around 2cm*.0.5cm.
3. broušení dno povrch
Po vzorek výběr, vzít byt strana jako dno povrch a vybrat vzorky krok podle krok na bruska by ruka nebo stroj 2c a použití 200% 23% 2c 600% 23% 2c 1200% 23% 2c 2000% 23 smirek to hladký povrch nejprve broušení čtyři strany rovnoměrně % 2c a broušení tloušťka to O % 7b% 7b4% 7d% 7d% 7dmm
4. Viskóza
Take soybean-sized gum Canada and drop it on the glass slide, heat it slowly with an alcohol lamp to melt the gum, and at the same time heat the sample that has been smoothed on the bottom to get rid of the water in it. During the heating process, you should use a matchstick to pick up a little Canadian gum at any time, put it in your hand and knead it after cooling down. If the gum sticks to your hands and cannot be kneaded into a ball, it means that the gum is still soft. At this time, it is not possible to stick the film. If the glue is kneaded in the hand and it becomes powder, it means that it has been heated too much, and the film cannot be glued. The gum must be heated until it is picked up with a matchstick, put it in the hand for a while, and then kneaded to form a ball. And use fingernails to scratch to a certain degree of hardness, no scratches, and no brittleness, stick the bottom surface of the sample to the glass slide with uniform pressure, but pay attention to the absence of air bubbles between the gum and the sample, if any If so, the glue must be reapplied.
5. Ředění
Put the glued sample on the grinder (or glass plate), grind it to {{0}}.1-0.15mm with 200# sandpaper, and then change it step by step to 600#, 1200#, 2000# fine sandpaper and grind it to 0.03mm. Points to pay attention to: 1). When grinding thin, the fingers pressing on the glass slide should be evenly pressed, otherwise the thin slices will have a thickness difference and become wedge-shaped. Therefore, the sample should be observed against the light at any time, and according to The strength to correct the flatness of the entire test piece. 2). In the step-by-step replacement of corundum, the test piece must be strictly cleaned to remove the fine sand on the sheet, otherwise the coarse sand will inevitably affect the surface finish of the sheet. 3). When grinding with 2000# fine sand at the end, use a microscope to observe at any time. If you find that the thickness has reached (taking quartz as an example under crossed polarized light, the highest interference color appears yellow-white), you can stop grinding.
6. celý krycí sklíčko
7. Hot lepidlo
Po kryt list je zakrytý, kryt list plech může být přesunut protože ten kanadský guma má ne ještě byl vytvrzený, a horký lepidlo musí be nese ven. Metoda je to vzít a řezbářský nůž a teplo it on a plyn lampa dokud to otočí červený, pak místo to kolem kryt sklo a opaření to to dokud barva z the kanadský guma je mírně žlutý, pak umýt off the the guma kolem kryt sklo s alkoholem nebo xylen % 2c přípona štítek c a celý list je dokončen.
