SiCp尺寸对铸态AZ91镁合金显微组织与腐蚀性能的影响

吕鑫, 邓坤坤, 王翠菊, 聂凯波, 史权新, 梁伟

Effect of SiCp Size on Microstructure and Corrosion Properties of Cast AZ91 Mg-alloys

LV Xin, DENG Kunkun, WANG Cuiju, NIE Kaibo, SHI Quanxin, LIANG Wei

表2 不同材料浸泡0.5 h后所得阻抗谱的电化学拟合参数

Table 2 Fitted electrochemical parameters of impedance curves of different materials after immersion 0.5 h

Materials Rs / Ω·cm2 CPE1 / 10-6Sn ·Ω-1·cm-2 n1 Rct / Ω·cm2 CPE2 / 10-5Sn ·Ω-1·cm2 n2 Rf / Ω·cm2 RL / Ω·cm2 L / H Rp / Ω·cm2 S1 8.322 9.505 0.9055 1876 4.525 0.8962 153.8 420.2 87.87 2029.8 AZ91 8.843 7.611 0.9247 1689 412.6 0.2505 71.1 3.489×1010 3240 1760.1 M10 10.24 8.081 0.9254 678.2 21.73 0.5212 0.01 421.9 99.22 678.2 S1+M9 14.72 8.702 0.916 387.3 201.8 0.0738 87.67 1.686×107 53.82 475