The effect of TiB2 and CrB2 additions to the commercial self-fluxing FeNiCrBSiC eutectic alloy on the structurization of electrospark coatings was examined. The mass transfer kinetics in the electrospark deposition of FTB20 (FeNiCrBSiC + 20% TiB2) and FCB20 (FeNiCrBSiC + 20% CrB2) composite materials and commercial self-fluxing FeNiCrBSiC alloy coatings onto steel 45 using an Alier-52 unit was studied. When the energy parameters of electrospark deposition increased, the mass transfer coefficient became higher and the electrospark coatings thicker and rougher. To reinforce the steel surfaces of machine parts operating in sliding friction conditions, application of the FTB20 and FCB20 coatings using an Alier-52 unit (2 and 4 modes at 1– 2 min/cm2) is recommended. The electrospark deposition of FTB20 and FCB20 electrodes leads to a heterophase structure on steel, consisting of an iron–nickel matrix and fine inclusions of chromium and/or titanium borides. The boride sizes in the developed coatings reach about 1 μm, which is one order of magnitude smaller than in the electrode materials (20 μm). In the deposition of the FCB20 electrode on steel, numerous cracks generate in the modified layer and deteriorate the service properties. The addition of TiB2 and CrB2 to the self-fluxing alloy increases the wear resistance of the electrospark coatings by four to five times as compared to the coatings produced from the commercial self-fluxing FeNiCrBSiB alloy (PG-Zh14 grade).

中文翻译：

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Fenicrbsic-Meb2涂层在钢上的电火花沉积

研究了在商用自熔 FeNiCrBSiC 共晶合金中添加 TiB2 和 CrB2 对电火花涂层结构化的影响。使用 Alier-52 装置研究了 FTB20（FeNiCrBSiC + 20% TiB2）和 FCB20（FeNiCrBSiC + 20% CrB2）复合材料和商用自熔 FeNiCrBSiC 合金涂层在 45 钢上的电火花沉积中的传质动力学。当电火花沉积的能量参数增加时，传质系数变高，电火花涂层更厚和更粗糙。为了加强在滑动摩擦条件下运行的机器零件的钢表面，建议使用 Alier-52 装置（2 和 4 模式，1–2 分钟/平方厘米）应用 FTB20 和 FCB20 涂层。FTB20 和 FCB20 电极的电火花沉积导致钢上的异相结构，由铁镍基体和铬和/或钛硼化物的细小夹杂物组成。开发的涂层中的硼化物尺寸达到约 1 μm，比电极材料 (20 μm) 小一个数量级。FCB20焊条在钢上沉积时，改性层产生大量裂纹，使使用性能变差。与由商业自熔 FeNiCrBSiB 合金（PG-Zh14 级）生产的涂层相比，向自熔合金中添加 TiB2 和 CrB2 使电火花涂层的耐磨性提高了四到五倍。开发的涂层中的硼化物尺寸达到约 1 μm，比电极材料 (20 μm) 小一个数量级。FCB20焊条在钢上沉积时，改性层产生大量裂纹，使使用性能变差。与由商业自熔 FeNiCrBSiB 合金（PG-Zh14 级）生产的涂层相比，向自熔合金中添加 TiB2 和 CrB2 使电火花涂层的耐磨性提高了四到五倍。开发的涂层中的硼化物尺寸达到约 1 μm，比电极材料 (20 μm) 小一个数量级。FCB20焊条在钢上沉积时，改性层产生大量裂纹，使使用性能变差。与由商业自熔 FeNiCrBSiB 合金（PG-Zh14 级）生产的涂层相比，向自熔合金中添加 TiB2 和 CrB2 使电火花涂层的耐磨性提高了四到五倍。