基于离子研磨技术的超低碳钢中铁素体晶粒的显示  

Display of Ferrite Grains in Ultra-low Carbon Steel Based on Ion Milling Technology

作　　者：崔桂彬 鞠新华 杨瑞 温娟 崔阳 CUI Guibin;JU Xinhua;YANG Rui;WEN Juan;CUI Yang(Shougang Group Company Limited Research Institute of Technology,Beijing 100043,China)

机构地区：[1]首钢集团有限公司技术研究院,北京100043

出　　处：《理化检验（物理分册）》2021年第12期8-11,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：采用金相法和离子研磨技术对超低碳钢中铁素体晶粒的显示进行了对比和分析。结果表明:采用常规的4%硝酸酒精溶液浸蚀样品,仅有少量的铁素体晶粒界面被腐蚀出来,组织显示效果较差;采用特制的硫酸铜溶液浸蚀样品,可以清晰地显示出铁素体的晶界,但制样时的浸蚀参数不易控制,需要多次、反复地调整浸蚀参数,成功率不高。采用离子研磨技术可以清晰地显示出铁素体晶粒,其对应的离子研磨关键最优参数分别是偏转角度α为30°和研磨时间为15 min,其他参数分别为加速电压5.5 kV、输出电压1.5 kV、气体流量0.09 cm^(3)·min^(-1)、样品座转速25 r·min^(-1)和转速模式采用360°旋转。The display of ferrite grains in ultra-low carbon steel was compared and analyzed by metallographic method and ion milling technology.The results show that only a small amount of ferrite grain interface was corroded by conventional 4%nitric acid alcohol solution,and the microstructure display effect was poor.The grain boundary of ferrite can be clearly displayed by etching the sample with a special copper sulfate solution,but the etching parameters during sample preparation were not easy to control,so the etching parameters need to be adjusted repeatedly and repeatedly,and the success rate was not high.Ferrite grains can be clearly displayed by ion milling technology,and the corresponding key optimal parameters of ion milling are given,including the deflection angleαis 30°and grinding time is 15 min.The other parameters are the acceleration voltage of 5.5 kV,the output voltage of 1.5 kV,the gas flow rate is 0.09 cm^(3)·min^(-1),the sample holder speed is 25 r·min^(-1),and the speed mode is 360°rotation.

关 键 词：超低碳钢 铁素体晶粒 金相法 离子研磨技术 

分 类 号：TG147[一般工业技术—材料科学与工程]