Corrosion behavior of heavily drawn bundled Copper-niobium filamentary microcomposite was studied as a function of niobium content to develop the relationship between microstructure and corrosion behavior in aqueous 90% HCl-FeCl_(3) solution, TEM obse...
Corrosion behavior of heavily drawn bundled Copper-niobium filamentary microcomposite was studied as a function of niobium content to develop the relationship between microstructure and corrosion behavior in aqueous 90% HCl-FeCl_(3) solution, TEM observation revealed that niobium filaments were distributed regularly in copper matrix along the sides of a triangular unit cell in the transverse section and more subgrain boundaries were absorbed at copper/niobium phase boundaries with increasing niobium content. The corrosion potential and rate in aqueous 90% HCI-10% FeC1_(3) Was -680.9mVSHE and 1.179×10^(-5)A/㎠. The corrosion potential and rate decreased as increasing niobium content and FeCl_(3). The yield stress can be described as the sum of the substructure strengthening component due-to elongated grains, subgrains and/or cell, the phase boundary strengthening term associated with the Hall-Petch type interaction between dislocations and phase boundaries and precipitate strengthening component.