电化学法快速评价无镀铜焊丝防锈性能的研究

发布时间：2018-02-27 02:23

本文关键词： 无镀铜焊丝油膜电化学阻抗谱防锈性能　出处：《热加工工艺》2017年23期 　论文类型：期刊论文

【摘要】：采用4种不同配方拉丝油经定径抛光拉制而成的准1.17 mm H08Mn2Si A焊丝拆封后,在封闭干燥环境储存5个月,并对这4种单根焊丝段在湿润恶劣条件下储存90天,分别比较的焊丝表面的锈点密度和大小,评价不同油膜包覆的焊丝的防锈性能。测量不同油膜包覆的焊丝在微极化区的线性极化曲线和电化学阻抗谱,对比焊丝的防锈性能与电化学响应之间的关系,探索采用电化学法快速评价无镀铜油膜包覆焊丝的防锈性能方法。结果表明:当油膜包覆焊丝的防锈性能差别较大时,通过极化阻力可以快速评价焊丝的防锈能力,极化阻力越大,防锈能力越好。油膜包覆的焊丝防锈性能越好,在阻抗谱Bode模图低频区阻抗模值越大。因此,可用阻抗谱Bode图在低频区的阻抗谱模值评价油膜包覆焊丝的防锈性能。
[Abstract]:The quasi 1.17mm H08Mn2SiA welding wire, which was made of four different kinds of drawing oil, was removed and stored in closed and dry environment for 5 months, and stored for 90 days in harsh wet conditions. The density and size of the rust spots on the wire surface were compared to evaluate the antirust performance of the wires coated with different oil films. The linear polarization curves and electrochemical impedance spectra of the wires coated with different oil films were measured. By comparing the relationship between the antirust performance and the electrochemical response of the welding wire, the method of rapid evaluation of the antirust performance of the non-copper coated wire by electrochemical method is explored. The results show that when the antirust performance of the oil-coated wire is quite different, The antirust ability of the wire can be evaluated quickly by polarization resistance. The higher the polarization resistance, the better the rust-proof capability of the wire coated with oil film, and the greater the impedance mode value in the low frequency region of the impedance spectrum Bode pattern, the better the anti-rust performance of the wire coated by oil film is. The antirust performance of the oil-coated welding wire can be evaluated by the impedance spectrum mode value of the impedance spectrum Bode diagram in the low frequency region.
【作者单位】：苏州热工研究院有限公司;
【分类号】：TG422.3

【相似文献】