郝玉林,蔡宁,姚士聪,龙袁,黎敏.高强双相钢表面选择性氧化行为对磷化性能的影响[J].表面技术,2020,49(8):309-315.
HAO Yu-lin,CAI Ning,YAO Shi-cong,LONG Yuan,LI Min.Effect of Selective Oxidation Behavior of High Strength Dual-phase Steel Surface on Phosphating Properties[J].Surface Technology,2020,49(8):309-315
高强双相钢表面选择性氧化行为对磷化性能的影响
Effect of Selective Oxidation Behavior of High Strength Dual-phase Steel Surface on Phosphating Properties
投稿时间:2019-10-27  修订日期:2020-08-20
DOI:10.16490/j.cnki.issn.1001-3660.2020.08.036
中文关键词:  双相钢  选择性氧化  磷化  酸蚀反应  Mn2SiO4  MnAl2O4
英文关键词:dual-phase steel  selective oxidation  phosphating  acid etching  Mn2SiO4  MnAl2O4
基金项目:
作者单位
郝玉林 首钢集团有限公司技术研究院,北京 100043 
蔡宁 首钢集团有限公司技术研究院,北京 100043 
姚士聪 首钢集团有限公司技术研究院,北京 100043 
龙袁 首钢集团有限公司技术研究院,北京 100043 
黎敏 首钢集团有限公司技术研究院,北京 100043 
AuthorInstitution
HAO Yu-lin Technical Research Institute of Shougang Group Co. Ltd, Beijing 100043, China 
CAI Ning Technical Research Institute of Shougang Group Co. Ltd, Beijing 100043, China 
YAO Shi-cong Technical Research Institute of Shougang Group Co. Ltd, Beijing 100043, China 
LONG Yuan Technical Research Institute of Shougang Group Co. Ltd, Beijing 100043, China 
LI Min Technical Research Institute of Shougang Group Co. Ltd, Beijing 100043, China 
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中文摘要:
      目的 确定高强双相钢表面Si、Mn元素选择性氧化行为对磷化性能的影响,以改善高强双相钢的磷化性能。方法 在具备不同表面选择性氧化行为的试样表面制备磷化膜。采用X射线光电子能谱仪(XPS)、辉光光谱仪(GDS)、透射电镜(TEM)等手段,分析高强双相钢表面Si、Mn元素的选择性氧化行为,通过扫描电镜观察磷化膜的结晶状态,并采用电化学技术分析钢板在磷化液中的反应过程。结果 当高强钢表面Si含量较少时,表面氧化物主要以弥散分布的小颗粒状MnAl2O4形态存在,能够加快在磷化液中酸蚀反应速度,磷化晶粒均匀、致密,尺寸小于4 mm,覆盖率为100%。当高强钢表面Si含量较高时,形成的Mn2SiO4容易在晶界聚集,颗粒尺寸较大,减慢了酸蚀反应速度,磷化晶粒尺寸大于8 mm,均匀致密性差。而提高材料表面Mn元素的富集程度,可以减轻Mn2SiO4聚集的现象,提高酸蚀反应速度,磷化晶粒均匀、致密,尺寸小于4 mm,覆盖率100%。结论 减轻双相高强钢表面Si元素的富集程度,而提升Mn元素的富集程度,可以加快钢板在磷化液中的酸蚀反应,进而改善磷化性能。
英文摘要:
      The work aims to determine the effect of selective oxidation behavior of Si and Mn on the phosphating properties of high strength dual-phase steel surface, so as to improve the phosphating properties of dual-phase steel. The phosphating films were prepared on the surface of samples with different selective oxidation behavior. X-rayphotoelectron spectroscopy (XPS), glow spectrometer(GDS), transmission electron microscopy (TEM) and other means were used to analyze the selective oxidation behavior of Si and Mn elements on the surface of high strength dual-phase steel. The crystalline state of phosphating film was observed by SEM, and the reaction process of steel plate in phosphating solution was analyzed by electrochemical technology. When the content of Si on the surface of high strength steel was low, the oxide mainly existed in the form of dispersed small granular MnAl2O4, which could speed up the acid etching reaction in phosphating solution, and the phosphating grains were uniform, dense and less than 4 mm in size, and the coverage rate was 100%. When the Si content on the surface of high strength steel was high, the formed Mn2SiO4 was easy to aggregate at the grain boundary, and the particle size was large, which slowed down the acid etching reaction speed, and the phosphating grain size was larger than 8 mm, and the uniformity and compactness were poor. However, increasing the concentration of Mn on the surface of the steel could reduce the accumulation of Mn2SiO4 and increase the rate of acid etching reaction, and then the phosphating grains were uniform and dense, with the size less than 4 mm and the coverage rate of 100%. Reducing the enrichment of Si and increasing the enrichment of Mn on the surface of dual-phase high strength steel can accelerate the acid etching reaction of steel plate in phosphating solution and improve the phosphating properties.
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