沉积时间对电解镍微观组织结构的影响

发布时间：2018-04-11 11:21

本文选题：电解镍 + 表面形貌　；参考：《材料热处理学报》2016年02期

【摘要】：采用XRD和SEM研究了电沉积时间对电解镍的择优生长方向、晶粒大小、表面形貌和截面组织的影响。结果表明,随着电沉积时间的延长,电解镍的晶体生长方向会发生变化,由最初的(111)(200)面织构变为16 h后的(220)面织构;随着沉积过程的进行,电解镍的微观表面形貌由棱锥状慢慢变为胞状,生长机制由开始时的螺旋位错生长变为累积长大机制;电解镍的横截面组织由细晶粒层和较粗大晶粒层构成,属于非均匀沉积层,大部分晶粒呈柱状生长,并且垂直于始极片,晶粒大小沿沉积厚度呈阶梯状分布。
[Abstract]:The effect of electrodeposition time on the preferred growth direction, grain size, surface morphology and cross section microstructure of electrolytic nickel was investigated by XRD and SEM.The results show that with the prolongation of electrodeposition time, the crystal growth direction of electrolytic nickel will change, from the initial texture of the surface to the texture of the crystal after 16 hours, and with the process of deposition, the crystal growth direction of electrolytic nickel will change, and the crystal growth direction of electrolytic nickel will be changed with the increase of the electrodeposition time.The microstructure of electrolytic nickel gradually changed from pyramidal to cellular, the growth mechanism changed from spiral dislocation growth to cumulative growth mechanism, and the cross section structure of electrolytic nickel was composed of fine grain layer and coarse grain layer.Most of the grains are columnar and perpendicular to the initial plate, and the grain size is a ladder distribution along the thickness of the deposit.
【作者单位】：兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室;兰州理工大学材料科学与工程学院;
【基金】：金昌市青年人才基金(jrc2015-76)
【分类号】：TG174.4

【相似文献】