目前，超音速空气喷涂(HVAF)技术制备的WC-10Co4Cr涂层已被应用于特种钛合金工件的耐磨防护。然而，由于涂层反光的致密表面不适应极端磨损和反光敏感的特殊工况，新一代特种耐磨工件对WC-10Co4Cr涂层表面的更高耐磨性和低可见光反射率提出了要求。喷涂粉体作为热喷涂中的关键因素，其粒径和成分对涂层的耐磨性与可见光反射率具有决定性影响，而目前普遍应用的5-15μm粒径WC-10Co4Cr球形粉体难以满足以上要求，需要更细的减反光改性的粉体。本文基于自制的2-10μm超细球形WC-10Co4Cr粉体开展减反光改性，旨在提高喷涂涂层表面耐磨性能的同时降低可见光反射率。本文优选石墨烯（Graphene,Gr）作为减反光剂，优选声振动物理包覆方法对自制的2-10μm超细球形WC-10Co4Cr粉体进行减反光改性后通过HVAF技术喷涂涂层，通过摩擦磨损试验机、维氏硬度计、可见光分光计和扫描电镜等设备对涂层进行表征，研究了2-10μm超细球形WC-10Co4Cr粉体与5-15μm球形粉体分别喷涂所得涂层的性能差异，同时研究了声振动物理包覆Gr改性粉体喷涂涂层的耐磨、可见光反射性能的变化趋势。实验得出，Gr改性后的涂层表面晶粒间有黑色点状Gr存在，可提高涂层耐磨性能、降低涂层表面可见光反射率。同时，与5-15μm粉体相比较，当使用声振动物理包覆技术对2-10μm粉体进行含量为2wt.%的Gr包覆改性后，粉体喷涂所得涂层的摩擦系数在同条件下由0.38降低至0.31，磨损质量由0.077mg降低到0.057mg，可见光反射率由61.8%降低到42.1%。，在耐磨性能提高的同时有效地降低了可见光反射性能。

At present, the WC-10Co4Cr coating prepared by supersonic air spraying (HVAF) technology has been applied to wear protection of special titanium alloy workpieces. However, because the reflective dense surface of the coating is not suitable for the special working conditions of extreme wear and reflective sensitivity, a new generation of special wear-resistant workpieces require higher wear resistance and low visible light reflectivity of the coated surface of WC-10Co4Cr. As a key factor in thermal spraying, the particle size and composition of spraying powder have a decisive influence on the wear resistance and visible light reflectivity of the coating. However, the WC-10Co4Cr spherical powder with particle size of 5-15μm, which is widely used at present, cannot meet the above requirements and needs finer anti-reflective modified powder. In this paper, anti-reflective modification is carried out based on the self-made ultrafine spherical WC-10Co4Cr powder of 2-10μm, aiming at improving the wear resistance of the sprayed coating surface and reducing the visible light reflectivity. In this paper, graphene (GR) was selected as antireflection agent. After comparing the powder modification methods such as ball milling, spray granulation and acoustic vibration physical coating, the self-made ultrafine spherical WC-10Co4Cr powder was antireflection modified by acoustic vibration physical coating method, and then the coating was sprayed by HVAF technology. The coating was characterized by friction and wear tester, Vickers hardness tester, visible light spectrometer and scanning electron microscope, and the performance difference of the coating obtained by spraying 2-10μm ultrafine spherical WC-10Co4Cr powder and 5-15μm spherical powder respectively was studied. At the same time, the change trend of wear resistance and visible light reflection performance of Gr modified powder sprayed by acoustic vibration physical coating was studied. The experimental results show that there are black spots of Gr between the grains on the surface of the coating modified by Gr, which can improve the wear resistance of the coating and reduce the visible light reflectivity of the coating surface. At the same time, compared with 5-15μm powder, when 2-10μm powder is coated with 2wt.% Gr by acoustic vibration physical coating technology, the friction coefficient of the coating obtained by powder spraying is reduced from 0.38 to 0.31, the wear mass is reduced from 0.077mg to 0.057mg, and the visible light reflectance is reduced from 61.8% to 42.1% under the same conditions. The wear resistance is improved and the visible light reflection performance is effectively reduced.