可以看出，四元、五元和六元合金涂层的平均显微硬度值分别为320、410和330HV0.1，高于45钢（205HV0.1）和一般铝合金。其中，五元涂层硬度最高，约为传统Al涂层(66 HV0.1)的7倍，这主要是因为涂层的非晶含量较高，存在的少量纳米晶起到了弥散强化作用。

It can be seen that the average microhardness values of the quaternary, quintuple and hexa-alloy coatings are 320, 410 and 330 HV0.1, respectively, which are higher than those of 45 steel (205 HV0.1) and general aluminum alloys. Among them, the five-element coating has the highest hardness, which is about seven times higher than the conventional Al coating (66 HV0.1), mainly because of the high amorphous content of the coating and the presence of a small amount of nanocrystals that play a diffusion strengthening role.