知识与财富的链接
先采用电泳沉积工艺在Ni基体上均匀沉积Fe2O3膜，然后采用电镀技术在Fe2O3膜中沉积金属Ni，得到含Fe2O3质量分数较高的Ni-Fe2O3复合镀层。分析了沉积电压对电泳沉积Fe2O3膜厚度的影响，研究了镀层的高温氧化性能，并对其氧化机理进行了探讨。使用傅里叶红外光谱、扫描电镜、能谱仪、X射线衍射仪对镀层的截面形貌、成分等进行了研究。结果表明：通过改变阴阳两极之间的电场强度或调整两极之间的距离，电泳沉积Fe2O3的厚度会发生很大的变化；经过一定温度热处理后，电泳沉积层中的有机物去除干净；使用电泳一电沉积法制备的Ni-Fe2O3镀层与基体之间的结合界面紧密、完整；复合沉积层在1000℃高温条件下氧化后可以得到镍铁尖晶石结构的物质。
Electrophoretic deposition （EPD） technique is employed for fabricating Fe2O3 film on the Ni substrate, electroplating technology is used to deposite Ni from the Fe2O3 film, and Ni-Fe2O3 composite coating with high mass fraction of Fe2O3 is obtained. The impact of deposition voltage on the thickness of Fe2O3 film is investigated, Ni-Fe2O3 film sintering performance at high temperature and its oxidation mechanism are also studied. Fourier transform infrared spectroscopy （FTIR）, scanning electron microscopy （SEM）, EDS and X-ray diffraction（XRD） are used to characterize the deposited films. The results show that by changing the electric field or the distanc between the anode and cathode, Fe2O3 electrophoretic deposition thickness will change a lot. After heat processing at a certain temperature, the organic matter in the deposition layer is removed clean. The binding interface between the Ni-Fe2O3 coating and the substrate is closely and completely. After the oxidation of composite deposition layer at 1 000 ℃ high temperature, the material of nickel-iron spinel swacture is obtained.
