Influence of Technological Parameters on the Evolution of Nickel Films Deposited by Electrolysis
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2009, Vol 32, Issue 1
Abstract
The influence of technological parameters on the structure of nickel layers electrodeposited on a copper substrate in a Watts bath has been studied. The complex influence of current densities, temperature and pH values on the formation of the deposition layers are compared. The surface morphology of the nickel films was analyzed by scanning electron microscopy (SEM) and atomic force microscopy (AFM). X-ray diffraction (XRD) was used to investigate the crystallinity of the prepared samples. The increase in the current density leads to fine crystallized films, while layers obtained at even higher current density have dendritic structures. The temperature increasing results in a structure change from fine to coarse.
Authors and Affiliations
Maria POROCH–SERIŢAN, Gheorghe GUTT, Traian SEVERIN, Silviu STROE, Carmen MIHOC
Keywords
Related Articles
- EP ID EP658877
- DOI -
- Views 64
- Downloads 0
Some Effects of Microwave Heating of Chromite Ore for Fe-CrAl Alloys by Aluminothermy
Processes and prime materials involved in Fe-Cr-Al alloys production by aluminothermy are presented having in view new possibilities to produce them more ecological and more efficient, using energy of microwave field. Th...
Granularly Unbind Materials for Casting Composite Moulds
This paper present some partial result based on this idea (of pollution prevention) the domain of making composite-casting moulds (in time of casting, solidifying, and alloy cooling). Casting process impose temporary or...
Influence of Some Technological Parameters of Fluidized Bed Carbonitriding on the Surface Hardness of Carbonitrided Parts from Low Alloy Steels
The paper describes the experimental research of thermos-chemical treatment of carbonitriding performed on samples of different brands of low alloy steels. The technological parameters whose influence on the carbonitride...
The Influence of the Physical-Chemical Factors on the Distribution of Heavy Metals in The Delta Ecosystems
Recognized to the influence of micropollutants, heavy metals represented on the ecological status of surface waters, including delta ecosystems, the paper aims to study the impact of environmental factors (temperature, p...
Corrosion Behavior of Some Materials in 0.5M Ammonium Hydroxide Solution
The present work has the purpose of studying metallographic aspects and corrosion resistance of three materials used in ammonia stripping plants. The corrosion process was evaluated by gravimetric tests and potentiodynam...