复合镀层中ZrO2微粒对基质Ni晶体结构的影响

采用复合电沉积方法制备了Ｎｉ－ＺｒＯ２复合镀层，探讨了ＺｒＯ２微粒引起的基质金属Ｎｉ的晶体择优取向及点阵常数的变化，及其对析氢电催化活性的影响。结果表明，ＺｒＯ２微粒的存在改变了Ｎｉ的电沉积层结构，使基质金属Ｎｉ产生新的沿（２２０）晶面的择优取向。这一新的择优取向不利于析氢反应。择优取向的改变说明复合电沉积过程中，Ｎｉ与ＺｒＯ２微粒是以一定的界面匹配进入复合镀层的，基质金属Ｎｉ点阵参数的改变也证明

Effect of ZrO 2 Particles on the Crystal Structure of Matrix Ni in Ni ZrO 2 Composite Plating

Ni ZrO 2 composite plating was prepared by composite electrodeposition method, and the change of crystal preferential orientation and lattice parameter of matrix metal Ni caused by ZrO 2 particles and its effect on the hydrogen evolution activity were investigated from the view of interaction between matrix metal and particles. The presence of ZrO 2 particles has significant effect on the crystal structure of electrodeposited matrix metal Ni, and leads to a new crystal preferential orientation along (220) crystal face. This new crystal preferential orientation is unfavorable to the hydrogen evolution reaction. These results show that in the course of electrodeposition, Ni and ZrO 2 particles enter into composite plating in a definite interfacial coupling relation, which is also proved by the data of the change in the lattice parameter of matrix metal Ni.