▎ 摘　　要

The surface of ZrH1.8 was subjected to micro-arc oxidation treatment in a constant pressure mode using graphene as an additive in Na5P3O10-KOH-Na(2)EDTA electrolyte. Adhesion of the ceramic layer to the substrate was tested using a coating scratch tester. Hydrogen barrier property of the ceramic layer were evaluated by vacuum dehydrogenation experiments. After adding graphene to the electrolyte, the micro-arc oxidation ceramic layer on the ZrH1.8 surface is composed of an inner dense layer and a loose outer layer. XRD pattern shows that the ceramic layer is mainly composed of M-ZrO2 and T-ZrO2 phases. As the concentration of graphene increases, the permeation reduction factor (PRF) of the ceramic layer increases firstly and then decreases. When the concentration of graphene is 0.10 g/L, the thickness of the ceramic layer is about 66.5 mu m, with less surface pores and cracks, denser ceramic layer, PRF at 13.2, and better hydrogen barrier performance.