将超细粉末烧结体热轧件打磨抛光,采用2.3g NaOH+2.6g K3[Fe(CN)6]+20ml蒸馏水混合制备的金相腐蚀液并对抛光后的试样进行腐蚀,腐蚀时间为90s,随后在Mx6Rt型金相显微镜下观测其金相组织。
The hot-rolled part of the ultrafine powder sintered body is polished, and the metallographic etching solution prepared by mixing 2.3g NaOH+2.6g K3[Fe(CN)6]+20ml distilled water is used to corrode the polished sample. The corrosion time is 90s, then observe the metallographic structure under the Mx6Rt type metallographic microscope.