In order to study the effect of Cr content on the glass forming ability (GFA) and mechanical properties of Fe-based amorphous composite coatings, and to prepare the Fe-based amorphous composite coatings with high hardness and wear resistance. Fe-Cr-Mo-B-Si amorphous composite coatings were prepared by laser cladding technology with different Fe to Cr ratio. The phase composition and microstructure were studied by X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS) and transmission electron microscope (TEM) techniques. Vickers indenter, nano-indentor and friction testing machine were used to investigate the mechanical properties and wear resistance of the amorphous coatings. The XRD patterns results show that the phase composition and the content of amorphous changed obviously, and the microstructure transformed clearly from equiaxed dendrite structure to the mixed structure of crystal and amorphous with the content of Cr increases in a restriction range. It was found that the coating showed the best glass forming ability (GFA) when the Fe to Cr ratio was 0.33. The coating was mainly composed of Fe-based solid solution, amorphous and a small number of intermetallic compounds. Appropriate content of Cr can effectively inhibit the formation of intermetallic compounds and decrease the effect of dendrite orientation growth. The high amorphous content makes the coating exhibit excellent microhardness (1200 HV) and wear resistance (2.7 × 10⁻⁶ mm³/ (Nm)). At this time, slight abrasive wear is the mainly wear mechanism of Fe-based amorphous composite coatings with the elements component of Fe_43.55Cr_21.45Mo₁₅B₁₀Si₁₀ (atm. %) at room temperatures.

为研究Cr含量对Fe基非晶复合涂层的玻璃形成能力(GFA)和力学性能的影响，制备具有高硬度和耐磨性的Fe基非晶复合涂层。采用激光熔覆技术制备了不同铁铬比的Fe-Cr-Mo-B-Si非晶复合涂层。通过X射线衍射（XRD）、扫描电子显微镜（SEM）、能量色散谱（EDS）和透射电子显微镜（TEM）技术研究了相组成和微观结构。使用维氏压头、纳米压头和摩擦试验机研究了非晶涂层的力学性能和耐磨性。XRD图谱结果表明，相组成和非晶态含量发生明显变化，随着Cr含量在一定范围内增加，显微组织由等轴枝晶组织明显转变为晶体和非晶的混合结构。结果表明，当铁铬比为 0.33 时，涂层表现出最好的玻璃形成能力 (GFA)。涂层主要由铁基固溶体、非晶态和少量金属间化合物组成。适当的Cr含量可以有效抑制金属间化合物的形成，降低枝晶取向生长的影响。高非晶含量使涂层表现出优异的显微硬度（1200 HV）和耐磨性（2.7 × 10 结果表明，当铁铬比为 0.33 时，涂层表现出最好的玻璃形成能力 (GFA)。涂层主要由铁基固溶体、非晶态和少量金属间化合物组成。适当的Cr含量可以有效抑制金属间化合物的形成，降低枝晶取向生长的影响。高非晶含量使涂层表现出优异的显微硬度（1200 HV）和耐磨性（2.7 × 10 结果表明，当铁铬比为 0.33 时，涂层表现出最好的玻璃形成能力 (GFA)。涂层主要由铁基固溶体、非晶态和少量金属间化合物组成。适当的Cr含量可以有效抑制金属间化合物的形成，降低枝晶取向生长的影响。高非晶含量使涂层表现出优异的显微硬度（1200 HV）和耐磨性（2.7 × 10⁻⁶  mm ³ / (Nm))。此时，以Fe _43.55 Cr _21.45 Mo ₁₅ B ₁₀ Si ₁₀ (atm. %)为元素成分的Fe基非晶复合涂层在室温下的主要磨损机制是轻微的磨粒磨损。