热处理对可降解Zn-0.45Li合金超细丝材微观组织、力学性能和腐蚀性能的影响

孙枝雪, 朱兴隆, 李谋成, 杨丽景, 姜建军, 张青科, 宋振纶

Effect of Heat Treatment on the Microstructure, Mechanical Properties, and Corrosion Performance of Biodegradable Zn-0.45Li Alloy Ultra-fine Wire

SUN Zhixue, ZHU Xinglong, LI Moucheng, YANG Lijing, JIANG Jianjun, ZHANG Qingke, SONG Zhenlun

表2 不同热处理工艺前后Zn-0.45Li合金丝材在SBF溶液中的极化曲线拟合参数

Table 2 Polarization curve fitting parameters of Zn-0.45Li alloy wires in SBF solution before and after different heat-treatment processes

Heat treatment Corrosion potential / V Corrosion current density / A·cm-2 0.14 mm -1.165 1.78 × 10-6 0.14 mm-70 oC 30 min -1.139 1.41 × 10-4 0.14 mm-70 oC 1 h -1.135 1.47 × 10-4 0.14 mm-70 oC 2 h -1.137 1.47 × 10-4 0.14 mm-70 oC 4 h -1.138 1.48 × 10-4 0.14 mm-120 oC 30 min -1.133 1.65 × 10-4 0.14 mm-120 oC 1 h -1.136 1.63 × 10-4 0.14 mm-120 oC 2 h -1.127 1.65 × 10-4 0.14 mm-120 oC 4 h -1.132 1.67 × 10-4 0.14 mm-150 oC 5 min -1.124 1.71 × 10-4 0.14 mm-150 oC 15 min -1.128 1.70 × 10-4 0.14 mm-150 oC 30 min -1.126 1.67 × 10-4 0.14 mm-150 oC 1 h -1.112 1.72 × 10-4