[1]颜晨曦 *,郝玉林,蔡 宁,等.酸洗汽车用钢磷化机理探讨及其质量评价[J].电镀与精饰,2022,(11):29-34.[doi:10.3969/j.issn.1001-3849.2022.11.006]
　YAN Chenxi *,HAO Yulin,CAI Ning,et al.Discussion on Phosphating Mechanism and Quality Evaluation of Pickling Automobile Steel[J].Plating & Finishing,2022,(11):29-34.[doi:10.3969/j.issn.1001-3849.2022.11.006]
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酸洗汽车用钢磷化机理探讨及其质量评价
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《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2022年11
页码:
29-34
栏目:
出版日期:
2022-11-15

文章信息/Info

Title:
Discussion on Phosphating Mechanism and Quality Evaluation of Pickling Automobile Steel
作者:
（1.首钢集团有限公司技术研究院，北京 100043； 2.绿色可循环钢铁流程北京市重点实验室，北京 100043； 3.北京能源用钢工程研究中心，北京 100043）
Author(s):
（1.Research Institute of Technology of Shougang Group Co. Ltd.， Beijing 100043， China； 2.Beijing Key Laboratory of Green Recycling Process for Iron & Steel Production Technology， Beijing 100043， China； 3.Beijing Engineering Research Center of Energy Steel， Beijing 100043， China）
关键词:
酸洗汽车用钢; 磷化膜; 外观; 膜重;  P 比; 耐蚀性
Keywords:
pickling automobile steel ;  phosphating film ;  appearance ;  film weight ;  P ratio ;  corrosion resistance
分类号:
TG178
DOI:
10.3969/j.issn.1001-3849.2022.11.006
文献标志码:
A
摘要:
以酸洗汽车用钢 SPHE 为基体材料制备磷化膜，探讨磷化膜的生长动力学过程与成膜机理，并系统研究了磷化膜的膜重、晶粒形貌、 P 比以及耐腐蚀性能。酸洗汽车用钢磷化生长过程可以分为基体的酸蚀溶解，晶粒的形核长大，表面磷化膜动态平衡三个过程。膜重实验结果可知，酸洗汽车用钢膜重为 2.3 g/m 2 ，满足膜重＞ 2.0 g/m 2 要求。扫描电镜（ SEM ）结果显示，磷化膜晶粒形貌为颗粒状，晶粒平均尺寸较细＜ 3 mm 。 X 射线衍射（ XRD ）结果表明，磷化膜 P 比 89.3% ，满足产品对磷化膜 P 比＞ 85% 的要求。电化学实验结果可知，磷化膜的自腐蚀电位为－ 0.67 V ，自腐蚀电流密度为 1.3×10 -5 A·cm -2 ；基体材料的自腐蚀电位为－ 0.69 V ，自腐蚀电流密度为 4.8×10 -5 A·cm -2 ，经过磷化处理后材料的耐蚀性能得到提升。
Abstract:
： The phosphating film was prepared with pickling automobile steel SPHE as the base material ， the growth kinetics and film formation mechanism of the phosphating film were discussed ， and the film weight ， grain morphology ， P ratio and corrosion resistance of the phosphating film were systematically studied. The phosphating growth process of pickling automobile steel can be divided into three processes ： acid etching and dissolution of the matrix ， nucleation and growth of grains ， and dynamic equilibrium of the surface phosphating film. The experimental results of the film weight show that the weight of the pickling steel film for automobiles is about 2.3 g/m 2 ， which meets the requirement of more than 2.0 g/m 2 . Scanning electron microscope results show that the grains of the phosphating film are granular ， and the average grain size is smaller than 3 mm. The results of X-ray diffraction （ XRD ） show that the P ratio of the phosphating film is 89.3% ， which meets the requirements of the product for the P ratio of the phosphating film>85%. The electrochemical experiment results show that the self-corrosion potential of the phosphating film is － 0.67 V ， and the self-corrosion current density is 1.3×10 -5 A· cm -2 ； the self-corrosion potential of the base material is － 0.69 V ， and the self-corrosion current density is 4.8 ×10 -5 A·cm -2 ， the corrosion resistance of the material is improved after phosphating treatment.

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备注/Memo

备注/Memo:
收稿日期： 2022-04-08 修回日期： 2022-04-26 作者简介： 颜晨曦（ 1993 —），男，硕士，工程师， email ： yanchenxi19930207@163.com?/html>
更新日期/Last Update: 2022-11-12