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用Ｘ射线衍射等方法，研究了从碱性镀液电沉积的锌镍合金镀层的化学组成与相结构、晶粒尺寸、显微硬度的关系．结果表明，随着合金镀层中镍含量的提高，合金镀层由η－和γ－相共存转变为只有γ－相；镀层的织构相应地由六方结构的（１００）择优面转变为立方结构的（３３０）择优面．η－和γ－相的晶粒尺寸随镀层镍含量的提高而降低；只有γ－相时，晶粒尺寸降低更为显著．镀层的显微硬度当镍含量为９．０ｗｔ．％时呈现一极小点．
The relationship between chemical composition, phase structure, grain size and microhardness of zinc-nickel alloy electrodeposited from alkaline solution was studied by X-ray diffraction. The results show that with the increase of nickel content in the alloy coating, the alloy coating changes from the coexistence of η- and γ-phase to the γ-phase only. The texture of the coating changes from the (100) preferential surface of the hexagonal structure to the cubic structure (330) preferred surface. The grain size of η- and γ-phase decreases with the increase of nickel content in the coatings. The grain size decreases more obviously only in the γ-phase. Micro-hardness of the coating When the nickel content of 9.0wt. % Showed a minimal point.