中文摘要：

应用模拟重力法高速电镀装置在无间隙原子钢（IF钢）基板上电镀锌,采用场发射扫描电镜（FESEM）和X射线衍射仪（XRD）研究电流密度和钢板运动速度对锌层微观形貌和织构的影响。结果表明：高速电镀锌层呈片晶状倾斜于基体表面紧密排列,随着电流密度（20~60 A/dm2）的增大,{10.3}和{10.4}等锥形织构系数降低,{00.2}基面织构系数显著增加,晶粒尺寸减小;当电流密度高于50 A/dm2时,伴有枝晶的出现;钢板运动速度（1~3 m/s）的增大提高镀层的致密度,同时降低{00.2}基面织构系数,对锥形织构的影响较小。

英文摘要：

The zinc was electrodeposited on the interstitial free（IF） steel plate by the simulation equipment of gravity method high speed galvanization.The influences of current density and velocity of steel plate on the morphology and texture of zinc coatings were investigated.The results show that the zinc platelets are tilted with respect to the substrate surface compactly.The increase of current density（20-60 A/dm2） results in the decrease of intensities of the {10.3} and {10.4} pyramidal texture and the increase of the intensity of the {00.2} basal texture.The application of high current density,50 A/dm2 or higher,can lead to the existence of nodule.The increase of the steel plate velocity（1-3 m/s） results in the dense coating and the decrease of intensity of the {00.2} texture,but do not affect the intensity of the pyramidal texture obviously.