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为了提高锌铝合金在干摩擦条件下的耐磨性以进一步拓宽其应用范围，在ＺＡ３５合金中加入２．５％～５．５％Ｓｉ，并用自制钠盐变质剂对含硅合金进行处理，制得变质硅相增强ＺＡ３５合金基复合材料。经显微观察发现，这种含硅合金中的初生硅相在钠作用下可由块状变成球团状，在球团硅相的表面辐射分布有杆状硅相。将球团硅相从合金中分离出后对其外貌进行的电镜观察和对合金中的球团硅深腐蚀得到的年轮结构分析表明，球团硅是一个多面多晶体，共晶硅在垂直于多面体的某些小晶面杆状生长。对球团硅增强的ＺＡ３５合金进行摩擦试验，发现这种合金中的初生硅由于有辐射杆状硅的作用在干摩擦时不易脱落。和ＺＡ３５合金以及含块硅的ＺＡ３５合金相比，这种锌基复合材料具有更高的耐磨性。
In order to improve the wear resistance of zinc-aluminum alloy under dry friction conditions to further broaden its application range, 2.5% -5.5% Si was added to ZA35 alloy and the silicon-containing alloy was treated with homemade sodium salt modifier. Preparation of modified silicon enhanced ZA35 alloy matrix composites. The microscopic observation shows that the primary silicon phase in the silicon-containing alloy can be transformed into a pellet shape by the action of sodium, and the rod-shaped silicon phase is radiated and distributed on the surface of the pellet silicon phase. The electron microscope observation of the appearance of the pellet after it was separated from the alloy and the analysis of the growth ring structure obtained from the deep erode of the pellet silicon in the alloy showed that the pellet silicon is a polycrystalline polycrystal, In some small faceted polyhedral rod-shaped growth. Friction test was carried out on the pelletized ZA35 alloy and it was found that the as-spun Si in this kind of alloy did not fall off easily due to the action of the irradiated rod-like silicon. This zinc-based composite has higher wear resistance than the ZA35 alloy and the bulk silicon-containing ZA35 alloy.