电解抛光质量对高氮不锈钢析出相原子力显微镜形貌表征的影响  

Effect of electrolytic polishing quality on morphology characterization of precipitated phases in high nitrogen stainless steel by atomic force microscopy

作　　者：张晓丹[1] 刘志文 徐海峰[1] 王昌[1] 张淑兰[1] ZHANG Xiaodan;LIU Zhiwen;XU Haifeng;WANG Chang;ZHANG Shulan(Central Iron and Steel Research Institute,Beijing 100081,China;Oxford Instrument Technology(Shanghai)Co.,Ltd.,Beijing 100089,China)

机构地区：[1]钢铁研究总院,北京100081 [2]牛津仪器科技(上海)有限公司,北京100089

出　　处：《物理测试》2022年第6期11-17,共7页Physics Examination and Testing

基　　金：钢铁研究总院自主投入重点项目(事21S62510Z)。

摘　　要：以高氮不锈钢30Cr15Mo1N为研究对象,研究电解抛光质量对析出相原子力显微镜(AFM)形貌表征的影响,以获得用于AFM形貌表征析出相的样品最佳电解抛光参数。采用不同抛光电压和抛光时间制备不同表面抛光质量的样品,通过AFM观察析出相形貌并测量表面粗糙度,使用image pro软件对析出相定量分析。试验结果表明,在室温、浓度为6%高氯酸酒精溶液中,抛光时间低于20 s或高于50 s、电解抛光电压低于15 V或高于30 V,制备获得的高氮不锈钢凸凹不平、表面粗糙度较大,甚至存在大量孔洞,不利于获得良好的表面质量,AFM形貌衬度较差,不适合析出相形貌表征以及定量分析。本试验条件下,高氮不锈钢在24~30 V电解抛光电压下抛光20 s后,可获得用于AFM定量表征材料内部的析出相样品。The high nitrogen stainless steel 30Cr15Mo1N was investigated to study the effect of electrolytic polishing quality on the morphology characterization of precipitate phases by atomic force microscopy(AFM). The best electrolytic polishing parameters for AFM observation of precipitate phases were obtained. The samples with different surface polishing qualities were prepared by different polishing voltage and polishing time. The morphologies and surface roughness of precipitate phases were observed by AFM. The image pro software was used for quantitative analysis of precipitate phase. The results showed that the surface of prepared high nitrogen stainless steel was poor and uneven with high roughness and even a lot of holes under the following experimental conditions: in 6% perchlorate alcohol solution at room temperature;the polishing time was less than 20 s or more than 50 s;the electrolytic polishing voltage was less than 15 V or more than 30 V. The surface of high nitrogen stainless steel is poor and uneven, the roughness is large, and even there are a lot of holes, which is not conducive to obtaining a good surface quality. The poor polishing quality led to poor contrast of AFM images, which was not suitable for the observation and quantitative analysis. If the high nitrogen stainless steel samples were polished at 24-30 V for 20 s, the precipitate phases sample for quantitative characterization by AFM could be obtained.

关 键 词：高氮不锈钢 电解抛光 析出相 表面粗糙度 原子力显微镜 

分 类 号：TG142.71[一般工业技术—材料科学与工程]