Abstract: An electrolyte for the electrochemical machining of a ?-?? nickel-based superalloy, includes NaNO3 in a content of between 10% and 30% by weight relative to the total weight of the electrolyte; a complexing agent selected from sulfosalicylic acid at a pH of between 3 and 10 and nitrilotriacetic acid at a pH of between 7 and 14, the complexing agent being present in a content of between 1% and 5% by weight relative to the total weight of the electrolyte; optionally, an anionic surfactant in a content of between 1% and 5% by weight relative to the total weight of the electrolyte; optionally, NaOH in order to obtain the desired pH; and an aqueous solvent.

Abstract: An electrolyte for electrochemical machining of a ?-?? nickel-based superalloy includes NaNO3 at a content of between 10 and 50% by weight relative to the total weight of the electrolyte; an additive chosen from KBr, NaBr, KI, NaI and mixtures thereof, in an additive/NaNO3 molar ratio of between 1 and 15; optionally an ethylenediaminetetraacetic acid-based complexing agent at a content of between 1 and 5% by weight relative to the total weight of the electrolyte at a pH of between 6 and 12; optionally an anionic surfactant at a content of between 1 and 5% by weight relative to the total weight of the electrolyte; optionally NaOH to obtain the appropriate pH; and an aqueous solvent.

Abstract: An electrolyte for electrochemical machining of a ?-?? nickel-based superalloy includes NaNO3 at a content of between 10 and 50% by weight relative to the total weight of the electrolyte; an additive chosen from KBr, NaBr, KI, NaI and mixtures thereof, in an additive/NaNO3 molar ratio of between 1 and 15; optionally an ethylenediaminetetraacetic acid-based complexing agent at a content of between 1 and 5% by weight relative to the total weight of the electrolyte at a pH of between 6 and 12; optionally an anionic surfactant at a content of between 1 and 5% by weight relative to the total weight of the electrolyte; optionally NaOH to obtain the appropriate pH; and an aqueous solvent.

Abstract: An electrolyte for the electrochemical machining of a ?-?? nickel-based superalloy, includes NaNO3 in a content of between 10% and 30% by weight relative to the total weight of the electrolyte; a complexing agent selected from sulfosalicylic acid at a pH of between 3 and 10 and nitrilotriacetic acid at a pH of between 7 and 14, the complexing agent being present in a content of between 1% and 5% by weight relative to the total weight of the electrolyte; optionally, an anionic surfactant in a content of between 1% and 5% by weight relative to the total weight of the electrolyte; optionally, NaOH in order to obtain the desired pH; and an aqueous solvent.

Abstract: An electrolyte-separating membrane includes a carrier made of a porous and permeable synthetic thermoplastic material that is larger than 0.8 mm in thickness and an active layer made of a material able to induce insertion and deinsertion reactions for selective transfer of cations through the membrane. The active layer is deposited on the carrier and is hermetic. The material of the active layer may in particular be a molybdenum cluster chalcogenide. The invention aims to provide an electrolyte-separating membrane that is able to transfer cations selectively and that may be manufactured with large dimensions. The invention also relates to a cation transfer method employing this membrane and to a process for manufacturing said membrane, in particular by selective laser sintering of a powdered polymer.

Abstract: In order to carry out a selective extraction of cations (Mn+) by an electrochemical transfer in a solution from a first electrolyte (E1) to a second electrolyte (E2), the method includes using as an electrolyte separation wall a transfer wall (2) made of chalcogenide with molybdenum clusters (MonXn+2 or MxMonXn+2) and ensuring the cation transfer through the transfer wall by generating a potential difference (?E) between the electrode A1 in the first electrolyte (E1) and the electrode C2 in the second electrolyte (E1) or the transfer wall (2) in order to induce an intercalation of the cations in the transfer wall on the side of the first electrolyte, a scattering of the cations therein, and the de-intercalation thereof in the second electrolyte.

Abstract: An electrolyte separation wall includes an active layer of a material capable of developing intercalation and deintercalation reactions for the selective transfer of cations through the wall and a support layer made of a porous material acting as support for the active layer. A cation selective transfer process uses such a transfer wall. According to a manufacturing process of such a transfer wall, a solution including an active material in powder form, a binder and a solvent are prepared, then the surface of a support layer made of porous material is coated with the solution and the solvent is evaporated.

Abstract: In order to carry out a selective extraction of cations (Mn+) by an electrochemical transfer in a solution from a first electrolyte (E1) to a second electrolyte (E2), the method includes using as an electrolyte separation wall a transfer wall (2) made of chalcogenide with molybdenum clusters (MonXn+2 or MxMonXn+2) and ensuring the cation transfer through the transfer wall by generating a potential difference (?E) between the electrode A1 in the first electrolyte (E1) and the electrode C2 in the second electrolyte (E1) or the transfer wall (2) in order to induce an interleaving of the cations in the transfer wall on the side of the first electrolyte, a scattering of the cations therein, and the de-interleaving thereof in the second electrolyte.