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我们采用下述方法制备Al-Si系铸铝合金金相试样,效果较好。试样经600~#金相砂纸研磨后,用1～1.5μ金钢石研磨膏在300～400转/分的抛光机上抛光2～5分钟(抛光织物为细呢),用水冲洗干净(此时在显微镜下仅看到细小的磨痕),然后将适量的MgO粉倒在另一
We use the following method to prepare Al-Si cast aluminum alloy metallographic sample, the better. After the sample is polished with 600 ~ # metallographic sandpaper, polished with 1 ~ 1.5μ diamond polishing paste on a polishing machine of 300 ~ 400 rpm for 2 ~ 5 minutes (the polishing fabric is fine), rinse with water When the microscope only saw a small wear marks), and then the right amount of MgO powder down on the other