Methods and systems for manufacturing components from articles formed by additive-manufacturing processes

A method for manufacturing a component, the method comprising the steps of:

• connecting a component comprising an internal passage to a power supply such that the component functions as an anode, wherein the internal passage of the component has an entrance opening and an exit opening, wherein walls of the internal passage of the component exhibit a first roughness, and wherein the component is formed by a process that results in the walls of the internal passage having the first roughness;
• connecting a cathode to the power supply, the cathode being disposed in an electrolyte solution, the electrolyte solution being located in a reservoir that does not have direct physical contact with the component, an entirety of the cathode being positioned externally to the internal passage of the component;
• contacting the internal passage of the component with the electrolyte solution, wherein said contacting comprises flowing the electrolyte solution into the entrance opening, through the internal passage, and out of the component via the exit opening;
• and
• using the power supply, applying an electrical potential difference and current flow between the component and the cathode, wherein, upon and subsequent to the applying the electrical potential difference, the walls of the internal passage of the component exhibit a second roughness, the second roughness being relatively more smooth than the first roughness.