O estudo da eletrodeposição de ligas de Ni-Mo utilizando gluconato de sódio como complexante.

Abstract

Ni-Mo alloys are widely studied for properties that are conferred, and are responsible for increased corrosion resistance, low coefficient of thermal expansion and high resistance against mechanical shocks. Metallic bonding forms are fusion and electrodeposition. Electrodeposition is an electrochemical technique widely used in the bonding of metal alloys. Some of its applications are for metal fins, catalyst support and hydrogen production. Formal, in particular, in particular, non-chemical, with also aerospace, automobilistic, etc. Metal alloys are different metals formed by two or more metals. Among the variables that influence the electrodeposition, is the current intensity, and the driving force of the eliminations of exercise is in the direction of the alloys. In some cases, for a correct use, a use of complexing agents is necessary. Thus, this work studied the influence of density on the electrodeposition of Ni-Mo alloys using sodium gluconate as a complex. The alloys revealed in relation to chemistry, deposition efficiency, surface morphology and corrosion resistance. The highest molybdenum content obtained in the alloys was 43% by weight. For a higher process speed, greater adhesion was around 26%. All coatings were amorphous. The highest bias resistance was 12456 W / cm2, and was obtained with the molybdenum content of 43% by weight.