镀锌钢板磷化膜P比与结晶覆盖率的测定方法研究  

Study on Determination Method of P Ratio and Crystal Coverage Rate of Phosphating Film on Galvanized Steel Plate

作　　者：岳迪凡 栗克建 孙岱 曹鹏军[2] 马鸣图[3] 尹在宏 YUE Di-fan;LI Ke-jian;SUN Dai;CAO Peng-jun;MA Ming-tu;YOON Jae-hong(State Key Laboratory of Vehicle NVH and Safety Technology,Chongqing 401122,China;School of Metallurgy and Materials Engineering,Chongqing University of Science&Technology,Chongqing 401331,China;China Automotive Engineering Research Institute Co.,Ltd.,Chongqing 401122,China;School of Nano and Advanced Materials Engineering,Changwon National University,Changwon 51140,South Korea)

机构地区：[1]汽车噪声振动和安全技术国家重点实验室,重庆401122 [2]重庆科技学院冶金与材料工程学院,重庆401331 [3]中国汽车工程研究院股份有限公司,重庆401122 [4]韩国国立昌原大学纳米新材料工学部,昌原51140

出　　处：《材料保护》2022年第4期123-128,共6页Materials Protection

基　　金：汽车噪声振动和安全技术国家重点实验室2021年度开放基金(NVHSKL-202104);国家科技重大专项课题(2018ZX04023-001)资助。

摘　　要：为正确评价镀锌钢板表面的磷化效果,针对最典型的2种磷化膜评价方法:P比法和结晶覆盖率测定法进行试验对比分析。分别使用不同的方法测定了磷化膜的P比和结晶覆盖率,结果表明:当不能确定磷化膜XRD数据的精确性时,使用测定P相和H相的衍射峰面积的方法测定P比更准确。当磷化膜XRD数据的精确性高时,直接测试P相和H相的衍射线强度计算出来的P比更精确。当SEM形貌的晶粒形状较多、分布较为复杂时,依据Q/JL J130012-2018可以较准确地测定磷化膜结晶覆盖率;当晶粒分布较为均匀时,可使用Photoshop软件分析法测定磷化膜结晶覆盖率,该方法还可以直观地观察晶粒间空隙的分布情况。In order to correctly evaluate the phosphating effect on the surface of galvanized steel plate,the two most typical phosphating film evaluation methods,namely P ratio and crystal coverage rate determination method were compared and analyzed.Different methods were used to determine P ratio and crystal coverage rate of phosphating film,respectively.Results showed that when the accuracy of XRD data of phosphating film could not be determined,the method of measuring the diffraction peak area of P phase and H phase was more accurate than that of determining the P ratio.When the XRD data of phosphating film was accurate,the P ratio calculated by directly measuring the diffraction intensity of P phase and H phase was more accurate.When there were many grain shapes and complex grain distribution in SEM morphology,the crystal coverage rate of phosphating film could be measured more accurately according to Q/JL J130012-2018.When the grain distribution was relatively uniform,the crystal coverage rate of the phosphating film could be measured by Photoshop software analysis method,which was more intuitive to observe the distribution of grain interstice.

关 键 词：磷化膜 P比 结晶覆盖率 

分 类 号：TG174.445[金属学及工艺—金属表面处理]