Homogeneously Dispersed Graphene Nanoplatelets as Long-Term Corrosion Inhibitors for Aluminum Matrix Composites

• DOI: 10.1021/acsami.1c07148
• Publication Date: 2021-06-29T19:19:08Z
• Authors: Yuming Xie; Xiangchen Meng; Dongxin Mao; Zhiwei Qin; Long Wan; Yongxian Huang
• Keywords: 01 natural sciences; 0104 chemical sciences

Deformation-driven metallurgy was implemented to prepare graphene nanoplatelet (GNP)-reinforced aluminum matrix composites with a time-dependent self-enhancement in corrosion resistance. Severe plastic deformation contributed the sufficient brokenness, thinning, enfolding, and redispersion of GNPs, as well grain refinement. The homogeneously dispersed GNPs showed great inhibition mechanism chloride-containing environment, ascribed formation carbon-doped protective film via diffusion chemical bonding between surface oxide film. Electrochemical intergranular tests were conducted show enhancement long-term First-principles calculations performed explore high resistance energy barriers vacancy formation, Cl ingress, charge transfer synchronously enhanced addition into inhibitors.