(常州大學(xué) 機(jī)械工程學(xué)院，常州 213016)
摘 要: 利用化學(xué)鍍?cè)?052鋁合金表面制備了Ni-P鍍層，通過(guò)SEM、EDS和XRD等手段對(duì)鍍層表面和界面的形貌、物相、組成、結(jié)構(gòu)和性能進(jìn)行了表征和分析。結(jié)果表明：化學(xué)鍍Ni-P合金鍍層為非晶態(tài)，成分以Ni為主，由直徑為10~50 mm的顆粒組成，顆粒分布較均勻，界面結(jié)合狀態(tài)良好；化學(xué)鍍對(duì)表面粗糙度的影響在500 nm以內(nèi)，鍍后鍍層表面粗糙度Ra為384.49 nm；鍍層殘余應(yīng)力狀態(tài)為拉應(yīng)力，其值達(dá)到(521±168.0) MPa。
關(guān)鍵字: Ni-P鍍層；5052鋁合金；表面粗糙度；殘余應(yīng)力
（College of Mechanical Engineering, Changzhou University, Changzhou 213016, China）
Abstract:The Ni-P coating was prepared on the surface of 5052 type aluminium alloy with chemical plating, the surface and interface morphologies, compositions, microstructures and properties were characterized and analyzed by SEM, EDS and XRD, respectively. The results show that the Ni-P alloy coating by chemical plating is in an amorphous state and mainly composed of Ni element. The particles are in the diameters of 10−50 μm and evenly distributed. The interface bonding state is good; the affected scope of chemical plating on its roughness is less than 500 nm, and the roughness Ra is 384.49 nm. Its residual stress state is tensile residual stress with value of (521±168.0) MPa.
Key words: Ni-P coating; 5052 aluminium alloy; surface roughness; residual stress
