还原氧化石墨烯铜基复合材料的耐腐蚀性能及其机理

姜兴国, 沈文卓, 杨涛, 张佳利, 钟民, 曹贺, 郭守武

Enhancing Effect and Mechanism of Reduced Graphene Oxide on the Corrosion Resistance of Copper-based Composites

JIANG Xingguo, SHEN Wenzhuo, YANG Tao, ZHANG Jiali, ZHONG Min, CAO He, GUO Shouwu

表1 在电化学腐蚀环境Cu和Cu/rGO块体的EIS结果

Table 1 EIS data of Cu and Cu/rGO bulks in electrochemical environment

Sample Rs / Ω·cm2 Qct / μF·cm-2 nct Rct / Ω·cm2 Qf / μF·cm-2 nf Rf / Ω·cm2 Error / % Cu 1 h 11.06 24.46 0.91 0.001025 830.7 0.3061 7.866 × 1010 2.53 Cu 12 h 8.36 65.91 0.78 498.3 455.1 0.3068 1.101 × 1011 2.04 Cu 24 h 13.64 92.65 0.75 1048 558.4 0.3559 8.807 × 1010 1.88 Cu 3 d 8.57 103.4 0.77 5307 890.7 0.6229 1.054 × 104 2.92 Cu 7 d 10.58 116.4 0.78 10560 1510 0.5659 6.734 × 109 5.66 Cu/rGO bulk-1 h 7.79 27.07 0.89 7.5 767.4 0.3534 8.669 × 1011 1.62 Cu/rGO bulk-12 h 7.56 86.34 0.77 566.4 450.2 0.3053 2.129 × 1011 1.67 Cu/rGO bulk-24 h 8.11 102.1 0.77 1433 477.9 0.3292 4.013 × 1011 1.87 Cu/rGO bulk-3 d 9.87 111.9 0.78 6003 821.3 0.5409 1.089 × 104 2.56 Cu/rGO bulk-7 d 9.47 188.3 0.79 15222 390 0.2757 1.210 × 1010 3.52