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采用激光烧结的方法制备了石墨烯增强镍基纳米复合材料,XRD和Raman测试结果表明,激光烧结后石墨烯存在于所制备的复合材料中,且石墨烯的结构和性能没有改变。显微硬度测试结果显示,石墨烯的添加使得石墨烯-镍纳米复合材料的硬度比激光烧结纯镍的硬度提高了约3倍。用电化学极化法研究了激光烧结的石墨烯-镍纳米复合材料和纯镍在3.5%Na Cl溶液中的腐蚀行为,石墨烯-镍纳米复合材料的腐蚀电位比激光烧结纯镍的腐蚀电位有所降低,且腐蚀电流也略有增大,说明其耐腐蚀性能较激光烧结纯镍有所下降。
The graphene reinforced nickel-based nanocomposites were prepared by laser sintering. The results of XRD and Raman tests showed that graphene existed in the prepared composite after laser sintering, and the structure and properties of graphene were not changed. Microhardness test results show that the addition of graphene makes the hardness of graphene - nickel nanocomposites increased by about 3 times than that of laser-sintered pure nickel. The corrosion behavior of laser-sintered graphene-nickel nanocomposites and pure nickel in 3.5% NaCl solution was studied by electrochemical polarization. The corrosion potential of graphene-nickel nanocomposites was higher than that of laser-sintered pure nickel Decreased, and the corrosion current also increased slightly, indicating that its corrosion resistance than pure nickel laser sintering decreased.