表面处理对铝合金健身器材抗腐蚀性能的影响  

Effect of Surface Treatment on Corrosion Resistance of Aluminum Alloy Fitness Equipment

作　　者：牛文英[1] NIU Wen-ying(Shaanxi Pre-school Normal University,Xi'an 710061,Shaanxi,China)

机构地区：[1]陕西学前师范学院,陕西西安710061

出　　处：《合成材料老化与应用》2019年第2期100-103,共4页Synthetic Materials Aging and Application

摘　　要：研究了锆化液pH值和锆化时间对5083合金表面锆化膜电化学性能的影响,并在最优成膜工艺下分析了膜层的显微形貌和腐蚀性能。结果表明,当锆化处理时间为2.5min,锆化液pH=4.5时,5083合金表面锆化膜具有最佳的耐蚀性能;锆化处理2.5min可以在5083合金试样表面形成致密的网状锆化膜,锆化膜厚度约在60μm～80μm,与5083合金基体结合良好,成膜过程中Zr元素优先在第二相颗粒处形核;在2mol/L HCl和2mol/L H_2SO_4溶液中,优化工艺下锆化膜试样的耐腐蚀性能都要优于5083合金基体,浸泡腐蚀失重测试结果与极化曲线测试结果一致。The effects of PH value of zirconium solution and zirconium time on the electrochemical properties of zirconium film on 5083 alloy surface were studied,and the morphology and corrosion properties of the film were analyzed under the optimum film forming process. The results show that the zirconium film on 5083 alloy has the best corrosion resistance when the time of zirconization treatment is 2.5min and the pH of zirconium solution is 4.5. After 2.5min of zirconization treatment,a dense network zirconium film can be formed on the surface of 5083 alloy sample. The thickness of zirconium film is about 60μ~80μm,which is well combined with 5083 alloy matrix. Zr element nucleates preferentially at the second phase particles in the film forming process. In HCl and 2mol/L H 2SO 4 solutions,the corrosion resistance of zirconium film samples under optimized process is better than that of 5083 alloy matrix. The results of immersion corrosion weight loss test are consistent with those of polarization curve test.

关 键 词：锆化处理 5083合金 交流阻抗谱 耐蚀性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程]