摘要
为了获得优良的AZ31镁合金磷化膜,采用外加磁场作用于镁合金的磷化过程。利用SEM,AFM,XRD和电化学工作站等仪器,研究转化膜的表面形貌、结构及耐蚀性。研究结果表明:磁场方向垂直于镁合金样品情况下显著促进AZ31镁合金转化膜的形成,转化膜主要由晶态Zn3(PO4)2.4H2O与AlPO4和非晶态Mn化合物组成,外加磁场作用于磷化过程能获得高耐蚀性的致密转化膜。
In order to obtain excellent phosphate conversion coatings on the surface of AZ31 magnesium alloy, a novel phosphate process for magnesium alloy by applying magnetic field was developed. The surface morphology,structure and corrosion resistance of conversion coating were studied by SEM, AFM, XRD and Electrochemistry workstation. The results show conversion coatings of AZ31 magnesium alloy can be further formed when the direction of mag netic field is vertical to the surface of magnesium alloy. Conversion coatings are mainly made up of crystal Zn3 （PO4）2 · 4H2O and AlPO4, and non crystal Mn compounds. We can obtain the dense conversion coatings by applying magnetic fields in the phosphate process.
出处
《表面技术》
EI
CAS
CSCD
北大核心
2011年第4期85-88,共4页
Surface Technology
基金
北京市中青年骨干教师支持计划项目(PHR201008201)
